What are the three checkpoints of the cell cycle and what is being “checked” during each one?
What will be an ideal response?
The G1/S checkpoint is when the cell assesses the DNA for radiation or chemical damage. The G2/M
checkpoint is when the cell assesses the DNA for radiation or chemical damage, and also ensures that
the DNA was fully replicated during S phase. The mitotic spindle checkpoint is when the cell
determines whether each chromosome is properly attached to the mitotic spindle.
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The chromosomes have arrived at opposite poles by the beginning of ____.
a. anaphase b. telophase c. prophase d. none of the above
Which of the following is an advantage of asexual reproduction?
a. It produces genetically diverse offspring. b. Large numbers of offspring can be produced quickly. c. Offspring are more likely to survive in a changing environment. d. Organisms have both male and female reproductive systems.
Eukaryotes include which of the following? (3)
What will be an ideal response?
Which of the following by-products of metabolism is the most toxic?
A) carbon monoxide B) ammonia C) urea D) lactic acid