If a lion eats a gazelle, before the molecules have been broken down by its cells, the lion has gained
A) potential energy.
B) kinetic energy.
C) entropy.
D) respiratory capacity.
E) enzymes for digesting grass.
Answer: A) potential energy.
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The gag gene of the HIV genome encodes:
A. reverse transcriptase. B. capsid. C. integrase. D. surface glycoprotein. E. protease.
What is one of the criteria that all genetic material must meet?
A. It does NOT contain the information necessary to construct the entire organism. B. It must be passed from offspring to parent. C. It must be able to be copied D. It must have a limited amount of variation.
You add an unknown phage to a mixture of F+ and F- cells of E. coli and plate out the bacteria. The bacterial colonies that grow are all F-. How can you explain this phenomenon?
A. The phage bound to a receptor on the sex pilus, and therefore only infected the F+ cells (leaving the F- cells alone). B. The phage bound to a receptor on the F- cells, leaving only them alive and allowing the F+ cells to die off. C. The phage integrated (lysogenized) the F- cells, giving them a selective advantage over the F+ cells. D. F+ cells are uniquely susceptible to phage attack for unknown reasons.
Cytochalasins prevent addition of monomers to preexisting ________
Fill in the blank with correct word.