3. Discuss the structure of the cell membrane and enumerate its functions.

11. Which structure does not make up the cytoskeleton? intermediate filaments microtubules microfilaments O protoplasm

3. How does phagocytosis, pinocytosis and receptor-mediated endocytosis differ? Provide examples.

18. What specific proteins make up the cellular cytoskeleton? What protein would you use to look at spindle fibers?

11. Microtubules are ___________________

B. CELL ULTRASTRUCTURE 1. Tabulate the differences between prokaryotic and eukaryotic cells in terms of average size, included organisms, localization of genetic material, presence of membraned organelles and presence of cytoskeleton. Criteria Prokaryotes Eukaryotes Average size (um) Included organisms Location of genetic material Presence of membrane-bound organelles Presence of cytoskeleton

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6. One of the following is a function of Golgi apparatus. A. synthesis of steroid hormones B. detoxification of many organic compounds, like barbiturates and ethanol C. release of glucose into the bloodstream D. sequestration of calcium Ca²+ ions. Esorting and packaging of secretory proteins.

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13.