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Problem Set 3: Complete the diagrams below by labeling the components of both the plant and animal cells. State the function or purpose of each of the identified components: This table lists the general functions performed by an animal cell. List the cellular structure(s) associated with each of these functions. Function Associated Organelle(s) and Structures Cell division a. Information storage and transferal b. Energy conversions c. Manufacture membranes and products d. Lipid synthesis, drug detoxification e. Digestion, recycling f. Conversion of H2O2 to water g. Structural integrity h. Movement i. Exchange with environment j. Cell-cell connection k. Interactive Question 6.2 a. If a eukaryotic cell has a diameter that is 10X that of a bacterial cell, proportionally how much more surface area would the eukarotic cell have? b. Proportionally how much more volume would it have? Interactive Questions Ch 7 7.1 Label the components in this diagram of the fluid mosaic model of membrane structure. Indicate the regions that are hydrophobic and those that are hydrophilic. 7.2 a. Cite some experimental evidence that shows that membrane proteins drift. b. How might the plasma membrane of a plant cell change in response to the cold temperatures of winter? 7.3 List the six major kinds of fxns that membrane proteins may perform 7.4 What types of molecules have difficulty crossing the plasma membrane? Why? 7.5 What osmotic problems do fresh water protests face? What adaptations may help them osmoregulate? 7.6 The ideal osmotic environment for animal cells is _________. The ideal environment for plant cells is ____________. 7.7Why is facilitated diffusion considered passive transport? 7.8 The Na+ -- K+ pump, the major electrogenic pump in animal cells, exchanges sodium ions for potassium ions, both of which are cations. How does this exchange generate a membrane potential? 7.9 A. How is cholesterol, which is used for the synthesis of other steroids and membranes, transported into human cells? B. Explain why cholesterol accumulates in the blood of individuals with the disease familial hypercholesteremia?
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