Why should it be that drugs such as colchicine, which inhibit microtubule polymerization, and drugs such as Taxol®,which stabilize microtubules, both inhibit mitosis?
What will be an ideal response?
Mitosis requires that the spindle microtubules behave dynamically—continuously polymerizing and depolymerizing—to probe the cell cortex, to seek attachments to kinetochores, and to segregate the chromosomes. Static microtubules are unable to do any of these things.
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The tissue that lines all internal surfaces is
a. epithelium. b. loose connective. c. supportive connective. d. fibrous. e. adipose.
Curtis’s contention that if the last blue whale were to
choke on the last panda bear and it still would not be the end of the world was his way of a. stressing the improper attitude of some environmental activists and to encourage the drilling for oil in Alaska. b. stressing the importance of some bacteria to the biosphere. c. encouraging the study of endangered species. d. shocking an audience into the study of conservation biology. e. doing none of these.
Which animal is classified as a primary consumer?
a. horse b. bear c. human d. fish e. dog
What color does chlorophyll reflect?
a. red b. blue c. green d. violet
e. yellow