In some organisms, a normal stop codon, UGA, encodes for the amino acid
A) leucine.
B) arginine.
C) isoleucine.
D) selenocysteine.
E) cysteine.
Answer: D
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Refer to Figure 45.8 in your textbook. Which of the statements below about foraging behavior is not correct?
A. Levels of for mRNA are significantly higher in foragers compared to nurses. B. cGMP and cAMP, cyclic nucleotides, were used as activators of cGMP-dependent protein kinase. C. cGMP but not cAMP was capable of activating kinase in nurse bees who then showed a significant increase in foraging behavior. D. cAMP was capable of activating a kinase that increased nurse bee behavior in foragers. E. The increase in nurse bee foraging was directly related to the dose of cGMP.
Warming is predicted to be greatest
A) during winter months. B) during summer months. C) in the Southern Hemisphere. D) in the Pacific Ocean.
The chance of an organism being preserved as a fossil is very low
a. true b. false
After consuming an antacid like Rolaids, ________.
A. HCl production would decrease B. the stomach would absorb water C. the pH of the stomach fluid would decrease D. the pH of the stomach fluid would increase