Chapter 11. Protozoan Groups. Biological Contributions. Form and Function
|
|
- Marybeth Williamson
- 6 years ago
- Views:
Transcription
1 Emergence of Eukaryotes Chapter 11 Protozoan Groups Copyright The McGraw Hill Companies, Inc. Permission required for reproduction or display. Cellular Symbiosis First evidence of life Dates to 3.5 billion years ago First cells were bacteria like Origin of complex eukaryote cells Most likely symbiosis among prokaryotic cells Modification of engulfed prokaryote into an organelle: Primary endosymbiosis Aerobic bacteria engulfed by bacteria May have become mitochondria found in most modern eukaryotic cells Engulfed photosynthetic bacteria evolved into chloroplasts Descendants in green algae lineage gave rise to multicellular plants 11 2 Trichomonas Emergence of Eukaryotes Protozoans Carry on all life activities within a single cell Can survive only within narrow environmental ranges Very important ecologically At least 10,000 species of protozoa are symbiotic in or on other plants or animals Relationships may be mutualistic, commensalistic, or parasitic Protozoans Protozoa are a diverse assemblage with mixed affinities. Unicellular No organs or tissues but specialized organelles At least one motile stage in the life cycle Most ingest their food Free living and symbiotic 11 3 Biological Contributions Protozoa have intracellular specialization or organization of organelles in cells. They move by pseudopodia, flagella, cilia and they can direct cell movements. Reproduction is asexual by fission, budding or cysts; or sexual by conjugation or syngamy of gametes. Stentor Volvox Most are naked, but some have a simple endoskeleton or exoskeleton. Pediastrum 1
2 Locomotor Organelles Cilia and flagella are morphologically the same Each contains a 9 + 2" pattern of paired microtubules, the axoneme, covered by cell membrane The Axoneme The center pair of tubules end at a small plate. The kinetosome, a short tube of nine triplet microtubules joins at the base of the axoneme. The kinetosome has the same structure as the centriole and therefore they may give rise to each other Pseudopodia Fig Play Amoeba Movie large blunt extensions of the cell body containing both endoplasm and ectoplasm. chief means of locomotion in amebas Actin filaments interact with cross linking proteins to change endoplasm from liquid to gel Pseudopodia In the limax form, the whole body moves rather than sending out arms. Axopodia long thin pseudopodia 2
3 Excretion and Osmoregulation Excretion of metabolic wastes is by diffusion. The main end product of nitrogen metabolism is ammonia that diffuses out of small protozoa. Contractile vacuoles fill and empty to maintain osmotic balance. Contractile Vacuole Paramecium has complex contractile vacuoles with an excretory pore surrounded by ampullae of six feeder canals. Nutrition Fig There is no known lipid bilayer that retains water against a gradient. A proton pump may actively transport H+ ions and cotransport bicarbonate; this would draw across water. Autotrophs synthesize their own food and heterotrophs obtain organic molecules made by others. Phagotrophs or holozoic feeders ingest food particles while osmotrophs or saprozoic feeders ingest soluble food. Few use any one strategy exclusively (e.g. Euglena). Nutrition Holozoic nutrition uses phagocytosis; the membrane invaginates around a food particle. food vacuole = phagosome. Lysomes fuse with phagosomes and dump enzymes to digest the contents. As digested food is absorbed, the phagosome becomes smaller. Saprozoic feeding may be by pinocytosis; diffusion is of little importance in protozoan nutrition. Variety of Phagocytosis (Fig. 11.2) 3
4 Reproduction Fig Asexual Processes Fission most common Budding occurs when a small progeny cell pinches off from a parent cell, as seen in some ciliates. Multiple fission, or schizogony, undergoes several nuclear divisions followed by cytokinesis, causing many simultaneous individuals to form at once If union of gametes precedes multiple fission, it is called sporogony. All of above accompanied by some form of mitosis Mitosis in protozoa divisions varies from metazoan mitosis Nuclear membrane often persists Spindle may form within the nuclear membrane Centrioles not observed in ciliates Macronucleus of ciliates elongates, constricts, and divides without mitosis (amitosis) Sexual Processes Although some protozoa are exclusively asexual, sex is a widespread and important source of genetic variation. May precede phases of asexual reproduction Isogametes look alike; anisogametes, the egg and sperm, are dissimilar most common. Like metazoa, some protozoa undergo gametic meiosis: meiosis occurs before gamete formation. Meiosis May occur during or just before gamete formation In other groups, meiosis occurs after fertilization (zygotic meiosis) All individuals produced asexually in life cycle up to next zygote are haploid Fertilization of one gamete by another Syngamy Some sexual phenomena do not involve syngamy Autogamy Gamete nuclei form by meiosis Fuse to form a zygote inside the parent organism Conjugation Gamete nuclei exchanged between paired organisms
5 Phylum Chlorophyta Classification of Prozoans Divided into Clades Stramenophiles Opisthokonta Some amebas Viridiplantae Phylum Chlorophyta Phylum Euglenozoa Subphylum Kinetoplasta Trypanosoma Phylum Retortamonada Giardia (a diplomonad) Alveolata Phylum Apicomplexa Phylum Ciliophora Phylum Dinoflagellata Parabasalids Trichonympha Amebas Phylum Apicomplexa All are endoparasites; hosts are in many animal phyla (Coccidia, Toxoplasma, Plasmodium). An apical complex is a feature of this phylum; it is present only in certain stages. The life cycle usually includes both sexual and asexual stages Plasmodium: The Malarial Organism Fig Malaria is the most important infectious disease of humans Anopheles mosquitoes carry Plasmodium; the female injects the Plasmodium in her saliva. 5
6 Phylum Ciliophora Ciliates are the most diverse and specialized of the protozoans They are always multinucleate with at least one macronucleus and a micronucleus. Macronuclei are responsible for metabolic and developmental functions. Micronuclei participate in sexual reproduction and give rise to macronuclei afterwards. The pellicle varies from a simple membrane to thickened armor. Paramecium: A Representative Ciliate Paramecium caudatum is common; it demonstrates the slipper shape of paramecia. Its asymmetrical appearance is caused by the oral groove (cytostome) ; leads to a tubular cytopharynx. Paramecium Structures Fecal material is discharged from the cytoproct. Two contractile vacuoles have radiating canals and serve in osmoregulation. A kidney shaped macronucleus has a smaller micronucleus alongside; some species have up to seven micronuclei. Major Protozoan Taxa Pellicle varies from a simple membrane to thickened armor Cilia Arranged in rows Propel food to the cytopharynx Fused cilia (cirri) used in locomotion Most are holozoic Phylum Dinoflagellata Dinoflagellates About half are photoautotrophic Chloroplasts possibly acquired by endosymbiosis Some among the most important primary producers in marine environments Commonly have two flagella Body naked or covered by cellulose plates Many have a mouth region through which they can ingest prey Many are bioluminescent Zooxanthellae Live in mutualistic association with corals and other invertebrates Only corals with symbiotic zooxanthellae form coral reefs Source: Source:
7 Major Protozoan Taxa Amebas Found in fresh and salt water, and moist soils Some planktonic, some require a substratum Most reproduce by binary fission Sporulation and budding are also seen Nutrition is holozoic Major Protozoan Taxa Entamoebidae Branched pseudopodia make them rhizopod amebas Lack mitochondria Entamoeba histolytica most important Lives in the large intestine Can lead to amebic dysentery Granuloreticulosa Slender pseudopodia extending through openings in test Most are foraminiferans Ancient group of shelled amebas found in all oceans Most live on the ocean floor Perhaps largest biomass of any animal group Most tests are many chambered and made of CaCO Major Protozoan Taxa Radiolarian Refers to marine testate ameba with intricate skeletons Oldest known protozoa Pelagic and live in shallow water Shell surface fused with spines Cytoplasm around the capsule extends axopodia to catch prey Reproduce by binary fission, budding,and sporulation Useful for determining the age of rock strata
ZOOLOGY 101 SECTION 2 LECTURE NOTES
ZOOLOGY 101 SECTION 2 LECTURE NOTES I. Protists - Commonly called protozoans - All single celled eukaryotes Three most important phyla: 1. Sarcomastigophora: includes the amebas and the flagellates 2.
More information11-1. Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
11-1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. CHAPTER 11 Protozoan Groups Unicellular Eukaryotes 11-2 Cellular Symbiosis Emergence of Eukaryotes Origin
More informationThe Protistans. Includes protozoans and algae All single celled eukaryotes
Includes protozoans and algae All single celled eukaryotes The Protistans Protozoa - Unicellular, eukaryotic, heterotrophic - Inhabit water and soil - Some normal microbiota of animals - Few cause disease
More informationProtozoans. BIO2135 Animal Form & Function. Protozoans. Page 1. Protist origins: Endosymbiont theory. Origin of the nuclear envelope
1 Protist origins: Endosymbiont theory Endosymbiont theory accounts for Nuclear membranes Intracellular membranes and spaces Mitochondria (chloroplasts) 2 Origin of the nuclear envelope Cytoplasm Nuclear
More informationKingdom Protista. The world of Protists: Animal-like Protists Plant-like Protists Fungus-like Protists
Kingdom Protista The world of Protists: Animal-like Protists Plant-like Protists Fungus-like Protists DOMAIN EUKARYA PROTISTS KINGDOM PROTISTA Any eukaryote that is not classified as a fungus, plant, or
More informationImportance of Protists
Protists Protists The kingdom Protista is a very diverse kingdom. Eukaryotes that are not classified as fungi, plants, or animals are classified as protists. However, even though they are officially in
More informationZoology Name: Block: Exercise #6: Protozoan Groups Lab Guide
Zoology Name: Block: Exercise #6: Protozoan Groups Lab Guide The protozoa are a diverse assemblage of unicellular eukaryotic organisms having at least two animal like properties: 1) absence of a cell wall,
More informationCharacterizing and Classifying Eukaryotes
PowerPoint Lecture Presentations prepared by Mindy Miller-Kittrell, North Carolina State University C H A P T E R 12 Characterizing and Classifying Eukaryotes Eukaryotic microorganisms Fungi Algae Water
More informationProtozoans. BIO2135 Animal Form & Function. Protozoans. Page 1. Protist origins: Endosymbiont theory. Endosymbiosis. Origin of the nuclear envelope
Protozoans Protist origins: Endosymbiont theory Endosymbiont theory accounts for uclear membranes Intracellular membranes and spaces Mitochondria (chloroplasts) 1 2 Origin of the nuclear envelope ytoplasm
More informationThere are two commonly accepted theories for how eukaryotic cells evolved: infolding and endosymbiosis. Infolding
Protists Protists The kingdom Protista is a very diverse kingdom. Eukaryotes that are not classified as fungi, plants, or animals are classified as protists. However, even though they are officially in
More informationLife Science. Chapter 9 Part 1 Protista
Life Science Chapter 9 Part 1 Protista Protista Junk drawer kingdom a little bit of everything, some w/ cell walls (composition varies), some w/out. All are Eukaryotes, autotrophs and heterotrophs represented.
More informationBIOLOGY - CLUTCH CH.29 - PROTISTS.
!! www.clutchprep.com Eukrayotic cells are large, have a nucleus, contain membrane-bound organelles, and use a cytoskeleton The nucleus is the synapomorphy that unifies eukaryotes Endosymbiotic theory
More informationSymbiosis. Symbiosis is a close association between of two or more organisms. Endosymbiosis living within another
PROTISTS Protists constitute several kingdoms within the domain Eukarya Protists obtain their nutrition in a variety of ways Algae are autotrophic protists Protozoans are heterotrophic protists Fungus
More informationProtists 9/11/2017. Endosymbiosis
Protists Chapter 28 Most eukaryotes are single-celled organisms Protists are eukaryotes Eukaryotic cells have organelles and are more complex than prokaryotic cells Most protists are unicellular, but there
More informationWhat Are the Protists?
Protists 1 What Are the Protists? 2 Protists are all the eukaryotes that are not fungi, plants, or animals. Protists are a paraphyletic group. Protists exhibit wide variation in morphology, size, and nutritional
More informationThe Origins of Eukaryotic Diversity
http://animal.discovery.com/tvshows/monsters-insideme/videos/the-brain-eatingamoeba.htm The Origins of Eukaryotic Diversity Introduction to the protists Kingdom Protista split into as many as 20 kingdoms
More informationProtists. There are NO typical protists. Protist General Characteristics - usually single cell - eukaryotic - paraphyletic group
There are NO typical protists. Protist General Characteristics - usually single cell - eukaryotic - paraphyletic group Traditional Classification There are three divisions of the Kingdom Protista: Protozoa,
More informationChapter 28 / Protists. I. Introduction A. Eukaryotes 1. 1 st eukaryotic organisms 2. most are unicellular 3. considered simple. Part I: Protozoans
Randa, Bio 1151 1 Chapter 28 / Protists I. Introduction A. Eukaryotes 1. 1 st eukaryotic organisms 2. most are unicellular 3. considered simple B. Protist diversity (ecological grouping) 1. comprised of:
More informationChapter 12B: EUKARYOTES The Protists & Helminths. 1. Protists. Algae Protozoa. 2. Helminths. 1. Protists. A. Algae. B. Protozoa. A.
Chapter 12B: EUKARYOTES The Protists & Helminths 1. Protists Algae Protozoa 2. Helminths 1. Protists A. Algae B. Protozoa A. Algae 1 Overview of the Algae Characteristics of algae: unicellular or multicellular
More informationProtists & Fungi. Words to Know: Chapters 19 & 20. Label the paramecium diagram above. (pg. 548)
Words to Know: Protozoan Chapters 19 & 20 Protists & Fungi Microsporidium Contractile vacuole Pseudopod Bioluminescent Colony Plasmodium Chitin Hypha Septum Spore Sporangium Rhizoid Lichen Mycorrhiza Label
More informationMETHODS OF CLASSIFYING INTO A CERTAIN KINGDOM: 1. prokaryote OR eukaryote 2. single OR multi celled 3. autotroph OR heterotroph
CH. 22 PROTISTS METHODS OF CLASSIFYING INTO A CERTAIN KINGDOM: 1. prokaryote OR eukaryote 2. single OR multi celled 3. autotroph OR heterotroph 6 Kingdoms 1. Eubacteria prokaryotes; single cell; heterotroph
More informationPROTISTS. Chapter 25 Biology II
PROTISTS Chapter 25 Biology II Vocabulary- Protists (44 words) 1. Protist 2. binary fission 3. conjugation 4. Multiple fission 5. pseudopodium 6. test 7. Amoeboid movement 8. cilium 9. Pellicle 10. oral
More informationUnit 2. The pellicle acts as a membrane It maintains the shape of the protozoan but remains flexible Ectoplasm
Kingdom Protista A polyphyletic group containing: Unit 2 Polyphyletic- The Protozoans (Unicellular - can be very complex) Individuals may group together to form colonies Colony Specialized organelles Pellicle
More informationKingdom Protista. Mr. Krause Edina Public Schools ISD273 EXIT 2/16/2005
Kingdom Protista Mr. Krause Edina Public Schools ISD273 Kingdom Protista General Characteristics Animal-Like Protists Plant-Like Protists Fungus-Like Protists General Characteristics Protozoa - Greek name
More informationProtists The Simplest Eukaryotes. Chapter 22 Part 1
Protists The Simplest Eukaryotes Chapter 22 Part 1 Impacts, Issues The Malaria Menace Plasmodium, a single-celled protist, causes malaria but also manipulates its mosquito and human hosts to maximize its
More informationWhat is a Protist? A protist is any organism that is not: a plant, an animal, a fungus or a prokaryote.
Kingdom Protista What is a Protist? There is much debate about this very diverse group of organisms. Scientists have been arguing for years over how best to classify these organisms. Eventually the protists
More informationCHAPTER 11 PROTOZOANS
CHAPTER 11 PROTOZOANS Protozoa are a diverse assemblage with mixed affinities. a. They lack a cell wall. b. They have at least one motile stage in the life cycle. c. Most ingest their food. Biological
More informationKingdom Protista. Protista
Kingdom Protista Protista Traditionally a kingdom level taxon Current evidence places organisms in as many as 3-5 kingdoms We will classify all: Unicellular or simple colonial Eukaryotic Organisms that
More information1. Ancient members of the group were the first living organisms on earth. A) Archaea B) Protists C) Fungi D) Plantae E) Animalia
Chapter 8 1. Ancient members of the group were the first living organisms on earth. A) Archaea B) Protists C) Fungi D) Plantae E) Animalia 2. Because protists groups cannot be drawn back to a single common
More information29/11/2012. Characteristics. Protist Diversity. Characteristics. Kingdom Protista. Examples of Plant-like Protists
Kingdom Protista Learning Outcome B1 Characteristics Appeared in the fossil record 1.5 billion years ago have an evolutionary advancement over bacteria, because they have a membranebound nucleus. also
More informationChapter 22: Protists
Chapter 22: Protists Protists Protistans are Unlike Prokaryotes Have a nucleus and organelles Have proteins associated with DNA Use microtubules in a cytoskeleton, spindle apparatus, and cilia and flagella
More informationKingdom Protista. Lab Exercise 20. Introduction. Contents. Objectives
Lab Exercise Kingdom Protista Contents Objectives 1 Introduction 1 Activity.1 Animal-like Protists 2 Activity.2 Fungal-like Protists 3 Activity.3 Plant-like Protists 3 Resutls Section 5 Introduction This
More informationNotes - Microbiology Protista
Notes - Microbiology Protista Part 1 Animal like Protists - Kingdom Protista is a very diverse group of organisms. There are over 115 000 different kinds, with traits that fit with fungi, plants, and animals.
More informationName Date Class CHAPTER 19
Name Date Class Study Guide CHAPTER 19 Section 1: Introduction to Protists In your textbook, read about protists. Match the definition in Column A with the term in Column B. Column A Column B 1. protist
More informationAmeba Coloring. The ameba is a protozoan that belongs to the Kingdom Protista. The name ameba comes from the Greek word
Ameba Coloring The ameba is a protozoan that belongs to the Kingdom Protista. The name ameba comes from the Greek word amoibe, which means change. (Ameba is also spelled amoeba.) Protists are microscopic
More informationChapter 21 Protists BIOLOGY II
Chapter 21 Protists BIOLOGY II Section 1 Characteristics of Protists Diversity Most diverse of all organisms ALL are eukaryotic Are eukaryotic organisms that cannot be classified as fungi, plants, or animals
More informationOutline. Diplomonads. Excavata. Parabasalids. Euglenozoans. Diatoms. Golden algae. Brown algae. SAR clade. Dinoflagellates Apicomplexans
BIOSC 041 PROTISTS! Reference: Chapter 28 Outline v General characteristics of protists v Our understanding of the relationships among protist groups continues to change rapidly! v One hypothesis divides
More informationChapter 12. Eukaryotes. Characterizing and Classifying. 8/3/2014 MDufilho 1
Chapter 12 Characterizing and Classifying Eukaryotes 8/3/2014 MDufilho 1 General Characteristics of Eukaryotic Organisms Five major groups Protozoa Fungi Algae Water molds Slime molds Include both human
More informationAmoeba hunts and kills paramecia and stentor. Eukaryotic photosynthetic cells
Amoeba hunts and kills paramecia and stentor Eukaryotic photosynthetic cells 1 Eukaryotic organelles are odd in many ways Organelles: membrane bound compartments in a cell Nucleus, chloroplasts, and mitochondria
More informationProtist Classification the Saga Continues
Protist Classification the Saga Continues Learning Objectives Explain what a protist is. Describe how protists are related to other eukaryotes. What Are Protists? Photosynthetic Motile Unicellular Multicellular
More informationEukaryotic photosynthetic cells
Amoeba hunts and kills paramecia and stentor Eukaryotic photosynthetic cells Eukaryotic organelles are odd in many ways Organelles: membrane bound compartments in a cell Nucleus, chloroplasts, and mitochondria
More information5/10/2013. Protists. Kingdom Protista. Called the Junk Drawer. 3 Subkingdoms of Protists. Protozoans Algae Slime molds
Protists Kingdom Protista Called the Junk Drawer 3 Subkingdoms of Protists Protozoans Algae Slime molds 1 Protozoans Animal-like Superphyla: Sarcodines ( Sarcodina ) Ciliates ( Ciliophora ) Flagellates
More informationUnit 14.1: Introduction to Protists
Unit 14.1: Introduction to Protists This organism consists of a single cell with several flagella. Is it a prokaryote, such as a bacterium? Actually, it s larger than a prokaryotic cell, and it also has
More informationCells. The basic units of a living system or organism
Cells The basic units of a living system or organism Cell Theory developed by 3 German scientists: Matthias Schleiden, Theodor Schwann, and Rudolf Virchow These scientists discoveries led to the cell theory
More informationChp. 26 Notes The Protista Kingdom
Chp. 26 Notes The Protista Kingdom Most protists are unicellular, microscopic organisms, but a few are complex and multicellular. These are the most diverse (different) organisms according to life cycles,
More informationName Hour Section 20-1 The Kingdom Protista (pages ) What Is a Protist? (Page 497) 1. What is a protist?
Name Hour Section 20-1 The Kingdom Protista (pages 497-498) What Is a Protist? (Page 497) 1. What is a protist? 2. Circle the letter of each sentence that is true about protists. a. All are unicellular.
More informationOrigins of Eukaryotic Diversity Protists Diversity
Origins of Eukaryotic Diversity Protists Diversity For Lecture, Make sure you know the Water Molds (Oomycota) names and characteris6cs of the taxa at the levels indicated by the red arrows. Characteristics
More informationBio 134. Ch. 19 Protists
Bio 134 Ch. 19 Protists Main Idea! Protists form a diverse group of organisms that are subdivided based on their method of obtaining nutrients What do all protists have in common?! They are all eukaryotes
More informationChapter 7. Protists. Protists( 원생동물 )
Protists( 원생동물 ) - currently 100,000 species, 35,000 species found in fossils - lying in classification gap bwtn prokaryote and smallest animal and plants - all are unicellular, some exist as colonies
More informationProtist any organism that is NOT a plant, animal, fungi, prokaryote. grouping for organisms that don't fit into other kingdoms
Chapter 20 Protists 20 1 What are protists? https://www.youtube.com/watch?v=ln69k7lytsu (20 Minutes) Protist any organism that is NOT a plant, animal, fungi, prokaryote grouping for organisms that don't
More informationProtista and Fungi. Fungi. Protista
Protista and Fungi Protista -eukaryotic -multi and single cellular many singular -consumers, producers, and decomposers -some movement -algae like protists, plant like protists, and animal like protists
More informationCell Review: Day "Pseudopodia" literally means? a) False feet b) True motion c) False motion d) True feet
Cell Review: Day 1 1. "Pseudopodia" literally means? a) False feet b) True motion c) False motion d) True feet Cell Review: Day 1 2. What is the primary method of movement for Euglena? a) Flagella b) Cilia
More information1. General Features of Protists
Chapter 28: Protists 1. General Features of Protists 2. Survey of the Protista A. The Excavata B. The SAR Clade C. The Archaeplastida D. The Unikonta 1. General Features of Protists All Protists are Eukaryotes
More informationSG 9.2 notes Ideas about targets and terms: 9.2 In the past, all living things were classified in either the kingdom of animals or plants
Ideas about targets and terms: 9.2 In the past, all living things were classified in either the kingdom of animals or plants Euglena are singled celled organisms in pond water They are green, so contain,
More informationProtists are in the Eukaryote Domain
Protista Protists are in the Eukaryote Domain All protists are eukaryotic (cells with a nucleus) Euglena Paramecium Amoeba Protists are really just all of the Eukaryotes that don t fit into the Animal,
More informationObserving and Classifying Protozoa
Name: Class: _ Date: _ Observing and Classifying Protozoa Background The name protozoa actually means first animals. This name was given because many protozoa share characteristics with animals. However,
More informationMicrobial Diversity. Bacteria Archaea Protista Fungi. Copyright 2011 Pearson Education, Inc.
Microbial Diversity Bacteria Archaea Protista Fungi Figure 19-1 Three common prokaryote shapes Figure 19-2 The prokaryote flagellum Figure 19-2b The structure of the bacterial flagellum cell wall wheelandaxle
More informationProtists (Eukarya) Ch Feb 2009 ECOL 182R UofA K. E. Bonine. Life can be divided into 3 domains. 1.5bya. Prokaryotes = bacteria + archaea
Protists (Eukarya) Ch 29 26 Feb 2009 ECOL 182R UofA K. E. Bonine 1 Life can be divided into 3 domains 3.8bya 1.5bya Prokaryotes = bacteria + archaea Prokaryote was ancestral and only form for billions
More informationCh. 19: Protists & Fungi
Ch. 19: Protists & Fungi Ch. 19: Protists Major Concepts 1. Protists make up a diverse catch-all kingdom of organisms. 2. Algae are photosynthetic protists that are major producers in the biosphere. 3.
More informationProtists (Eukarya) Ch Feb 2009 ECOL 182R UofA K. E. Bonine
Protists (Eukarya) Ch 29 26 Feb 2009 ECOL 182R UofA K. E. Bonine 1 Life can be divided into 3 domains 3.8bya 1.5bya Prokaryotes = bacteria + archaea Prokaryote was ancestral and only form for billions
More informationPage # In what ways are protists important? The Protists. A diverse assemblage of eukaryotes that ARENʼT fungi, plants, or animals
In what ways are protists important? The Protists A diverse assemblage of eukaryotes that ARENʼT fungi, plants, or animals Base of many food chains - especially in aquatic settings Clarify water by filtering
More information(4, , ) BIO1130
1 Geological time scale and building height (1floor 60Ma, 72 floors, 12 feet/floor) Major Eons (Ma) Phanerozoic (550 Ma to present time, top 9 floors ) Proterozoic (2,500 550 Ma, 33 rd -63 rd ) Archaean
More informationGeneral Characteristics of Protists
General Characteristics of Protists Protists are: Eukaryotic Unicellular Most solitary, though some colonize. Some Autotrophic, some Heterotrophic Share characteristics with plants, animals and fungi.
More information19.1 Diversity of Protists. KEY CONCEPT Kingdom Protista is the most diverse of all the kingdoms.
19.1 Diversity of Protists KEY CONCEPT Kingdom Protista is the most diverse of all the kingdoms. 19.1 Diversity of Protists Protists can be animal-like, plantlike, or funguslike. Protists are eukaryotes
More informationChapter 12: EUKARYOTIC MICROBES
Chapter 12: EUKARYOTIC MICROBES 1. Protista: Algae & Protozoa 2. Fungi 3. Helminths 1. Protista: Algae & Protozoa Chapter Reading pp. 355-363, 374-378, 660-663, 665-666 Overview of the Algae Characteristics
More informationChapter 21: Protists
Chapter 21: Protists Section 1: Characteristics of Protists Gamete: a haploid reproductive cell that unites with another gamete to form a zygote Zygote: the cell that results from the fusion of gametes
More informationProtists. Chapter 28. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for
Chapter 28 Protists PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp Overview:
More informationHuman biology Cells: The Basic Units of Life. Dr. Rawaa Salim Hameed
Human biology Cells: The Basic Units of Life Dr. Rawaa Salim Hameed Reference Text book of human biology by John Kenneth Inglis 3 rd Ed (1985) Cells: The Basic Units of Life Cell theory Cell theory consists
More informationPROTISTS James Bier
PROTISTS 2013-2015 James Bier Objectives 1. List the characteristics shared among the protists. 2. Describe secondary endosymbiosis and the evidence for this hypothesis. 3. List the five major taxa of
More informationMicrobiology: A Systems Approach
Microbiology: A Systems Approach First Edition Cowan &Talaro Chapter 5 Eucaryotic cells and microorganisms Chapter 5 2 3 Eucaryotic cells 3 Flagella 4 Cilia similar in overall structure to flagella, but
More information20-1 The Kingdom Protista
20-1 The Kingdom Protista Protists are that are not members of the Plant, Animal, or Fungi Kingdoms. The Kingdom Protista may include more than 200,000 species. Most, but not all, protists are. One way
More informationv How long ago is Earth thought to have formed? v What is thought to have been the first genetic material? v Are we tetrapods?
Biosc 41 Announcements 9/29 v Quick review followed by lecture quiz (history & phylogeny) v Lecture: Protists v Lab: Protozoa (animal-like protists) v Lab exam 1 is Wed! (does not cover today s lab) Review:
More informationSY 2017/ nd Final Term Revision. Student s Name: Grade: 10A/B. Subject: Biology. Teacher Signature
SY 2017/2018 2 nd Final Term Revision Student s Name: Grade: 10A/B Subject: Biology Teacher Signature Biology Grade 10A/B Revision Work Sheet Modified True/False Indicate whether the statement is true
More informationFoundations in Microbiology Seventh Edition
Lecture PowerPoint to accompany Foundations in Microbiology Seventh Edition Talaro Chapter 5 Eukaryotic Cells and Microorganisms Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction
More informationChapter 20 Protists Section Review 20-1
Chapter 20 Protists Section Review 20-1 1. What are protists? 2. Why is it easier to define protists by what they are not, rather than by what they are? Completion On the lines provided, complete the following
More informationThe History of Eukaryotes
The History of Eukaryotes They first appeared approximately 2 billion years ago Evidence suggests evolution from prokaryotic organisms by symbiosis Organelles originated from prokaryotic cells trapped
More informationAnimals contain specialized cells
What is an Animal? Kingdom Animalia Main Characteristics Members of the Animal Kingdom are: Eukaryotic Multicellular Heterotrophic Have cells with membranes BUT NO cell wall Animals contain specialized
More informationProkaryotes and Kingdom Protista
Prokaryotes and Kingdom Protista Domain Eubacteria Domain Archae The Prokaryotes Cell type: Prokaryotes Found in: Domain Bacteria Domain Archae Cell type: Prokaryotes Two Domains: Bacteria and Archae Do
More informationKingdom Protista. The following organisms will be examined in the lab today: Volvox, Oedogonium, Spirogyra, Ulva
Kingdom Protista I. Introduction The protists are a diverse group of organisms. In the past they have been classified as fungi, plants and animals. They can be green, autotrophs or nongreen heterotrophs.
More informationEVOLUTION OF METAZOANS
EVOLUTION OF METAZOANS All multicellular animals are called metazoans and single celled animals, Protozoa Metazoa (Meta= later; zoa = animals) after Metazoa (Meta= later; zoa = animals) after the Protozoans
More informationKey Points PROTISTA. Functional arrangements. General. All of these groups are polyphyletic 9/18/14
PROTISTA The paraphyletic, nonfungi, non-animal, nonplant Eucarya + Even MORE new words to remember! Key Points Origin of eukaryotes via symbiosis Origin of classification based on functional (ecological)
More information2.3. The Protists. why Protists Are Important
2.3 The Protists The smallest eukaryotes and some of the largest belong to the Kingdom Protista. This kingdom is extremely diverse. Some of its members, such as amoebas and paramecia, are very small and
More informationObjective 1: I can describe protists. Protists are a kingdom of living organisms that CAN NOT be classified as animals plants or fungus.
Kingdom Protista Objective 1: I can describe protists Protists are a kingdom of living organisms that CAN NOT be classified as animals plants or fungus. They are: Eukaryotic they contain a nucleus Can
More informationAll Living Things Share Common Characteristics 1. Living Things are Composed of Cells: Single-cell organisms have everything they need to be self-sufficient. In multicellular organisms, some cells do only
More informationThe Domain Eukarya is a large, diverse and complex group or organisms that consist of one or more Eukaryotic Cells
The Domain Eukarya is a large, diverse and complex group or organisms that consist of one or more Eukaryotic Cells This domain is divided into four fairly distinct kingdoms: - Protists (Protista) - Plants
More informationEukarya. Eukarya includes all organisms with eukaryotic cells Examples: plants animals fungi algae single-celled animal-like protozoa
Eukarya Eukarya includes all organisms with eukaryotic cells Examples: plants animals fungi algae single-celled animal-like protozoa Protists Eukaryotic; but comprises its own Kingdom Protista Algae -
More informationYou and plants have something in common! 1
7-2 Eukaryotic Cell Structure & Function These are micrographs of cells you saw in the Cell Types Lab. One is plant (onion epithelium), the other animal (human cheek epithelium). Determine which is which
More informationCELLS. Single Celled Organisms. The Building Blocks of Life. Junior Science
CELLS Single Celled Organisms The Building Blocks of Life Junior Science Lesson Objectives Know what is meant by unicellular and multicellular organisms. List the six kingdoms of life. Explain the difference
More informationProtists: Molds Lecture 3 Spring 2014
Meet the Protists 1 Protists: Molds Lecture 3 Spring 2014 Domain Eukarya What unites them as a group? The Origin of Eukaryotic Cells Evolution of the endomembrane system Which organelles are included in
More informationProtists: Molds Lecture 3 Spring 2014
Protists: Molds Lecture 3 Spring 2014 Meet the Protists 1 Domain Eukarya What unites them as a group? The Origin of Eukaryotic Cells 2 Evolution of the endomembrane system Which organelles are included
More informationIntroduction to Microbiology Eukaryote microorganisms: The Protists. Dr A. Fleming. Lecture Preview: The Protists. What you will learn Protists are :
Introduction to Microbiology Eukaryote microorganisms: The Protists Dr A. Fleming Lecture Preview: The Protists What you will learn Protists are : 1) Eukaryotes 2. An extremely diverse collection of organisms
More informationUnit 10: The simplest living beings
Unit 10: The simplest living beings 1. Fungi 2. Protoctists 2.1. Protozoa 2.2. Algae 3. Bacteria 4. Viruses Think and answer? a. What type of organism can you see in the photograph? b. What type of cells
More informationCell Cycle and Cell Division
Cell Cycle and Cell Division The Cell Cycle is the series of events that take place in the cell from one cell division to another. Cell Cycle includes: 1-Interphase 2-Mitosis 3-Cytokinesis Phases of the
More informationUnit 4 Protists and Fungi
Unit 4 Protists and Fungi Objectives Topic 1: Protists Protists are eukaryotes that are not members of the kingdoms, Plantae, Animalia, or Fungi Identify the defining characteristics of animal-like, plant-like
More informationProtist any organism that is NOT a plant, animal, fungi, prokaryote. grouping for organisms that don't fit into other kingdoms
Chapter 20 Protists 20 1 What are protists? https://www.youtube.com/watch?v=ln69k7lytsu (20 Minutes) Protist any organism that is NOT a plant, animal, fungi, prokaryote include more than 200,000 species
More informationCH 11 PROTISTS AND FUNGI
CH 11 PROTISTS AND FUNGI Name Day M T W Th F Weekly Lifeline Period B_ Check Question What is a parasite? KICK-OFF LEARNING LOG KICK-OFF Response (1) A parasite is an organism that feeds off of another
More informationCharacterizing and Classifying Eukaryotes
CSLO5. Describe evidence for the evolution of cells, organelles and major metabolic pathways from early prokaryotes and how phylogenetic trees reflect evolutionary relationships. CSLO6. Compare characteristics
More informationProtists: Algae Lecture 5 Spring 2014
Protists: Algae Lecture 5 Spring 2014 Meet the algae 1 Protist Phylogeny Algae - Not monophyletic What unites them as a group? Range from unicellular to multicellular From phytoplankton to kelp forests
More informationProtists: Algae Lecture 5 Spring Protist Phylogeny. Meet the algae. Primary & Secondary Endosymbiosis. Endosymbiosis. Secondary Endosymbiosis
Meet the algae Protists: Algae Lecture 5 Spring 2014 Protist Phylogeny 1 Primary & Secondary Endosymbiosis 2 Algae - Not monophyletic What unites them as a group? Range from unicellular to multicellular
More informationCharacterizing and Classifying Eukaryotes
CSLO5. Describe evidence for the evolution of cells, organelles and major metabolic pathways from early prokaryotes and how phylogenetic trees reflect evolutionary relationships. CSLO6. Compare characteristics
More information