4. Which structure controls the amount of light that reaches the object being viewed?

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1 Biology 2201 Midterm Name: Part A: Multiple Choice Questions Transfer Answers to the answer sheet attached at the back. 1. Which supports the cell theory? abiogenesis biogenesis comparative DNA spontaneous generation 2. Which scientist supported biogenesis? Hooke Needham Redi Schwann 3. Which scientist is credited with the discovery of cells? Brown Hooke Leeuwenhoek Spallanzani 4. Which structure controls the amount of light that reaches the object being viewed? A B C D

2 5. If the field of view in the diagram below has a diameter of 200 µm, what is the approximate size of the specimen shown? 100 µm 200 µm 400 µm 800 µm 6. Which type of microscope was used to obtain the image shown? compound light scanning electron simple light transmission electron

3 7. Which type of cell is shown? Cell Type Organism eukaryotic animal eukaryotic plant prokaryotic animal prokaryotic plant 8. What is structure X in the diagram shown? cell membrane golgi apparatus lysosome ribosome

4 9. Four representative plant cells are shown, each containing a nucleus. Which cell would have the most difficulty maintaining homeostasis? A B C D 10. Which describes the movement of a substance in or out of a cell through a carrier protein without the use of cellular energy? active transport diffusion facilitated diffusion osmosis 11. Which type of transport is illustrated in the diagram shown? General Transport Specific Transport Endocytosis Phagocytosis Endocytosis Pinocytosis Exocytosis Phagocytosis Exocytosis Pinocytosis 12. Which process requires the use of ATP? active transport diffusion

5 osmosis passive transport 13. Which equation represents the process of photosynthesis? 6CO2 + 6H 2 O + 6O 2 6CO2 + 6H 2 O + 6O 2 + A T P C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + A T P C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O 14. Which cellular metabolic process occurs in the absence of oxygen? aerobic respiration anaerobic respiration diffusion osmosis 15. A large piece of land is currently being cleared of trees to develop a golf course. How will photosynthesis and cellular respiration be affected in the local ecosystem? Photosynthesis Cellular Respiration decrease decrease decrease increase remain constant decrease remain constant increase 16. If two organisms are in the same class, which other category of the Linnean classification system do they share? family genus order phylum 17. Which two organisms are most closely related? Organism Taxon A B C D Kingdom Animalia Animalia Animalia Animalia Phylum Chordata Chordata Chordata Chordata Class Mammalia Mammalia Mammalia Mammalia Order Carnivora Diprotodontia Carnivora Diprotodontia Family Canidae Macropodidae Canidae Macropodidae Genus Canis Dendrolagus Canis Macropus

6 Species latrans ursinus rufus rufus A and B A and C B and D C and D 18. Using the table shown, what is the correct binomial nomenclature for a horse? Classification Kingdom Phylum Class Order Family Genus Species Name Animalia Chordata Mammalia Perissodactyla Equidae Equus ferus Animalia ferus Equus ferus ferus Animalia ferus Equus 19. Which Kingdom is mainly composed of multicellular organisms which are absorptive heterotrophs? Animalia Fungi Plantae Protista 20. Why is binomial nomenclature preferred over the use of common names? complexity consistency difficulty simplicity 21. Why are viruses not classified into any Kingdom of living organisms? They are unable to reproduce by themselves. They contain genetic material. They do not adapt to their environment. They have no water requirement. 22. How many Kingdoms are recognized in the current Linnean classification system? 4 5 6

7 7 23. Which is NOT an example of a modern technique used to identify an unknown species? DNA analysis habitat analysis protein comparison radioactive dating 24. Which is a member of Kingdom Archaea? Bacteriophage Methanogen Protozoan Yeast 25. Which plant relies on water for successful reproduction? Birch Moss Rose Spruce 26. Which organism exhibits bilateral symmetry?

8 27. The following table describes the characteristics of four (4) unidentified invertebrates. Which organism should be most complex? Organism Symmetry Digestion Body Cavity A radial two way, one opening none B bilateral two way, one opening none C radial one way, two opening present D bilateral one way, two opening present 28. Which class of organisms use gills, skin and lungs for respiration? Agnatha Amphibia Chondricthyes Reptilia 29. Which correctly describes this organism? Endoskeleton Circulatory System Reproduction cartilage only two chambered heart cartilage only three chambered heart external fertilization and external development external fertilization and internal development cartilage and bone three chambered heart internal fertilization and external development

9 cartilage and bone four chambered heart internal fertilization and internal development 30. A new organism has been found which has a four chambered heart, internal fertilization and external development. What other characteristic should this organism display? air sacs exoskeleton gill slits radial symmetry 31. Which phylum of animals is most successful? Annelida Arthropoda Cnidaria Echinodermata 32. A viral host cell has a mutation that has altered its metabolism. Which stage of the virus lifecycle will be affected? A B C D 33. At which stage in the lifecycle of a fern does sexual reproduction occur? A B C D 34. Which term describes the body s ability to maintain a stable internal environment

10 despite changing external factors? digestion homeostasis immunity respiration Short Answer Questions 35 a) A macrophage has lost the ability to engulf and destroy foreign materials. Suggest two (2) cellular structures that may have malfunctioned. Justify your choices. (2 marks) 35 b) Examine the diagram below. (i) Explain how the plant cell will respond in this environment. (2 Points)

11 (ii) Explain how an animal cell will respond differently in this environment. (1 Point) 36 a) Create a dichotomous key to classify the four organisms shown. (2 Points)

12 b) Explain why an oak tree can grow to be much taller than a moss. (2 Points) 36 c) Why is the organism shown below so biologically successful? Justify your answer with two (2) reasons. (2 Points)

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