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1. From the 3 postulates of cell theory, choose one and give your explanation.
2. Where would you expect to find more mitochondria –in a skin cell or in a muscle cell? Justify your answer.
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- 1. Organlles work together to sustain the overall function of the cell and maintain homeostasis (state of balance). Predict what would happen if one of the organelles was removed. How would that affect the survival and efficienct of the cell? 2. Which organelles are parts of the endomembrane system. The organelles are: Chloroplast Mitochondria Lysosome Endoplasmic Reticulum Golgi Bodies Ribosomes Cell Wall Vacuole MicrotubuleWhich of the following statements is correct about the three classical postulates of cell theory: I. All organisms are composed of one or more cells. (Virchow)(1858) II. The cell is the basic unit of life in all living things. (Schleiden & Schwann)(1838-39) III. All cells are produced by the division of preexisting cells. (Virchow)(1858)1. What did Hooke and Leeuwenhoek discover about cells by using a microscope? 2. What does the cell theory state? Name the three scientists mainly responsible for developing the cell theory. 3. List the four parts that are found in all living cells. 4. Describe the composition of the plasma membrane. 5. List functions of the cytoplasm and cytoskeleton. 6. What is the role of the nucleus of a eukaryotic cell?
- 1. Differentiate between prokaryotic and eukaryotic cells? 2. In your view, which cellular organelle is most important and why? 3. Why does a cell need a cell membrane? 4. What is the importance of three types of cytoskeletons a cell? 5. What are different types of cell junctions? What is their role?By now you should be familiar with the following cellular components. Briefly define what they are and what function they provide for cells. a. cytosolB. cytoplasmC. mitochondria d. nucleuse. chloroplastsf. lysosomesg. chromosomesh. golgi apparatusi. peroxisomesJ. plasma membranek. endoplasmic reticuluml. cytoskeleton1. Discuss the function of the following organelles. a. Endosome b. Lysosome c. Peroxisome d. Golgi Apparatus 2. Discuss the difference between smooth ER and rough ER in terms of their function and structures. Please answer question 1 (a,b,c,d) and question 2. Thank you
- Which of the following is not a component of the endomembrane system? a. mitochondrion b. Golgi apparatus c. endoplasmic reticulum d. Iysosome1. When considering tight junctions, adherens junctions, and desmosomes: a. Which ones do not help in resisting mechanical stress and holding cell shape? Why not? b. Considering how the mechanical junctions are placed in the plasma membrane, why don’t they provide a truly sealed barrier?1. Give the names and functions of the following cellular organelles. a. Mitochondria b. Rough Endoplasmic Reticulum C. Nucleus 2. What are two advantages of compartmentation in eukaryotic organisms? 3. What is the difference between cytosol and cytoplasm?
- 1.Identify and describe one process that is carried out in cell Y that is not carried out in cell X. 2.Select one lettered organelle and write the letter of that organelle in the space below. Identify and describe the organelle you selected.Cell with extensively developed Golgi apparatus is most likely to exhibit which of the following properties Select one: O a. Synthesis of large amount of secretory proteins O b. Actively involved with phagocytic activities O c. Generates a large amount of ATP O d. Secrete a large amount of steroids O e Synthesis of abundant phospholipidsCell Structure and Function Match the following organelles to their descriptions 1. 2. 3. 4. 5. cell wall 8. endoplasmic reticulum ribosome 9. central vacuole 6. chloroplasts cell membrane 7. nucleus Golgi apparatus Cytoplasm 10. lysosomes 11. mitochondria 12. cytoskeleton A. an organelle that produces ATP B. cell interior C. in plants, organelles that use light to make organic compounds. D. the cell's packaging and distribution center E. Controls all functions of cells and stores DNA F. encloses and regulates what enters and leaves the cell G. small organelles that contain the cell's digestive enzymes H. Site of protein synthesis I. in plant cells, a large, membrane-bound sac that stores water, nutrients, or other substances J. Fibers that give structure to the cell K. Supports and maintains shape of plant cells L. system of internal membranes that move proteins and