What new information was conclusively demonstrated by the Hershey and Chase experiment pictured on the previous slide?
1.DNA contains phosphorous but not sulfur.
2.Prophage DNA was injected into the bacterial cells while prophage protein remained outside.
3.DNA is the genetic material.
4.Protein contains sulfur but not phosphorous.
5.Prophage protein was injected into the bacterial cells while prophage DNA remained outside.
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Which of the following events involves the release of enzymes?
A. cell cleavage B. cortical reaction C. egg membrane depolarization D. increase in cytosolic calcium within the egg E. the fusion of egg and sperm nuclei
In a hydrangea plant, the color blue (B) is dominant to the color white (b). What is the probability that offspring will be blue?
a. 75% b. 50% c. 25% d. 100%
What does UGA specify? (Select all that apply.)
A) a stop signal in the universal genetic code B) the amino acid tryptophan in human mtDNA C) a stop signal in human mtDNA D) formyl-methionine in mtDNA
The citric acid cycle and glyoxylate cycle are similar in many respects. Which of the following statements accurately describes these cycles?
A) Both cycles are catabolic. B) The glyoxylate cycle has only a single decarboxylating reaction. C) In the glyoxylate cycle, two acetyl CoA molecules are used to generate succinate. D) The glyoxylate cycle is used by some organisms to synthesize proteins. E) The citric acid and glyoxylate cycles both occur in the mitochondrion.