Bio 111 Study Guide Chapter 6 Tour of the Cell

Transcription

1 Bio 111 Study Guide Chapter 6 Tour of the Cell BEFORE CLASS: Reading: Read the whole chapter from p , mostly skimming Concept 6.1 on microscopy. Figure 6.8 on pp is really helpful in showing most of the organelles and describing their functions briefly. In Concept 6.6 on the cytoskeleton, concentrate on the words and parts you re defining below. Definitions: cell organelle cytosol eukaryotic cell prokaryotic cell nucleoid cytoplasm plasma membrane nucleus nuclear envelope chromosomes chromatin nucleolus ribosomes endomembrane system vesicle endoplasmic reticulum smooth ER

2 rough ER Golgi apparatus lysosome vacuole mitochondria chloroplast peroxisomes cytoskeleton microtubules centrosome flagella cilia microfilaments intermediate filaments cell wall extracellular matrix plasmodesmata tight junctions desmosomes gap junctions Questions/Problems: 1. There are four main components that all cells (meaning both prokaryotic and eukaryotic cells) have. What do you think they are?

3 DURING CLASS: Tools to Study Cells Light microscopy Electron microscopy Cell Basics All cells have: Two Types of Cells Prokaryotic Eukaryotic Plasma Membrane Eukaryotic Cell Preview

4 Organelles Involved in Making Proteins Nucleus Nuclear envelope Chromatin Nucleolus Ribosomes Endomembrane System Function Vesicle Endoplasmic reticulum (ER) Smooth ER Rough ER Golgi apparatus Lysosome Vacuoles (also plasma membrane and nuclear envelope)

5 Organelles Involved in Energy Processing Endosymbiont theory Mitochondria Chloroplast Peroxisomes Cytoskeleton Motor proteins Microtubules Centrosome Flagella Cilia Microfilaments Intermediate Filaments

6 Extracellular Components Cell wall Extracellular Matrix collagen proteoglycans fibronectin integrins Intracellular Junctions Plasmodesmata Tight junctions Desmosomes Gap junctions Animation Tour of Animal Cell Animation Tour of Plant Cell Animation Inner Life of a Cell Video David Bolinsky on TED.com **Take Away Concept** Each structure and part of a cell is tied to a specific, necessary function, both for the cell & for the organism.

7 AFTER CLASS: Questions/Problems: 1. Label the type of cell for each figure below and as many parts of the cells as you can (feel free to add color).

8 (#1 continued) 2. Which of the following is (are) present in prokaryotic cells? a. nuclear envelope b. mitochondria c. ribosomes d. DNA e. c and d

9 3. Fill in the table with as many details as you can about these cell parts. Cell Part Structure Functions Where Found plasma membrane cytosol nucleoid plasmid nucleus nuclear envelope chromatin nucleolus ribosomes vesicle rough ER smooth ER Golgi apparatus lysosome vacuole mitochondria chloroplast peroxisome microtubules microfilaments intermediate filaments centrosome

10 flagella cilia cell wall extracellular matrix plasmodesmata tight junction desmosome gap junction 4. Mark a star by the organelles in the table that are part of the endomembrane system. 5. Label the collagen, proteoglycans, fibronectin, and integrins on this animal cell extracellular matrix. Then add their functions. 6. Which type of microscope would you use to study the following? a. the changes in shape of a living white blood cell b. the details of the surface texture of hair 7. Do plant cells have mitochondria? Explain.