You are carrying out experiments in cell fusion by fusing together cells at different stages of the cell cycle. You then observe the behavior of each nucleus residing in the combined cytoplasm of the two cells. Which of the following results reflects what would occur if you fused a G2 cell to a cell in the M phase?
a) the G2 chromosomes would undergo premature chromosome compaction
b) the G2 chromosomes would be elongated and would consist of only one chromatid each
c) the G2 chromosomes would decondense
d) the nucleus from the G2 cell would start to replicate its DNA
Ans: a) the G2 chromosomes would undergo premature chromosome compaction
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Glycolysis is:
A. aerobic. B. anaerobic. C. aerobic in some organisms but anaerobic in others. D. aerobic in some tissues but anaerobic in others. E. None of the answer options is correct.
The overall ecological efficiency of most organisms is between ____ percent
a. 1 and 2 b. 2 and 5 c. 5 and 20 d. 10 and 50 e. 50 and 75
One of the reasons that most animal cells will not burst if too much water enters by osmosis is that
a. the cell wall will protect it. b. the cytoplasm exerts pressure against the plasma membrane. c. carrier proteins will remove excess water. d. solute molecules will resist water molecules. e. salts will absorb the water.
What was the purpose of the spark chamber in this experimental apparatus?
a. To generate heat
b. To produce ATP
c. To stop the reaction
d. To generate lightening
e. To produce UV radiation