Imagine a cell entered mitosis but was unable to make microtubules. What stage of mitosis would it
be stuck in? What will be an ideal response?
The cell would be stuck in prophase. It would be able to dismantle the nuclear membrane and
condense its chromosomes. But, without microtubules it would be unable to position the
chromosomes on the midway point for metaphase
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Plants are able to defend themselves against viruses that have invaded their cells by:
A. producing antibodies. B. recognizing and interrupting viral RNA replication. C. causing the virus to detach from the cell membrane before it injects its RNA. D. producing sticky proteins on the cell surface that capture the viruses. E. increasing the number of plasmodesmata per cell.
The power used by most bacterial flagellar motors is produced by
A. synthesis of glucose. B. proton motive force (PMF). C. ATP hydrolysis. D. All of the choices are correct.
Why do plasmids make such excellent cloning vectors?
a. They are small and circular. b. They each have hundreds of restriction endonuclease cut sites. c. They replicate independently of the chromosomal DNA. d. They have uracil instead of thymine.
Which of the following types of solutes will dissolve readily in water?
a. polar solutes b. non-polar solutes c. hydrophobic solutes d. solutes do not dissolve in water