Which viral life cycle would result in a quicker death for an infected cell?
A. The prophage cycle
B. The retroviral cycle
C. The lysogenic cycle
D. The lytic cycle
Answer: D
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Two frog populations (same species) living in two neighboring lakes sing slightly different courtship songs. Increased irrigation makes the land between the two lakes wetter, allowing frogs to expand their ranges to the area between the lakes
Females in both populations prefer loud frogs to quieter frogs, but do not distinguish between the two slightly different songs. Assuming that courtship song differences have a genetic basis, predict what will likely happen to the songs of the two frog populations. A) The songs will become more similar to each other. B) Males will become louder. C) Disruptive selection will cause the songs to differentiate even more. D) Genetic drift will cause the songs to differentiate even more. E) You cannot predict a change in the courtship songs at the two lakes.
Which type of cell provides metabolic support to the neurons?
a. Muscle b. Neuroglia c. Loose connective d. Squamous e. Dense connective
Clover will flower if exposed to 8 hours of dark and 16 hours of light. It will not flower if exposed to 16 hours of dark and 8 hours of light. However, if the 16 hours of dark is interrupted with a brief period of light, the clover will flower. Which of the following will trigger clover to flower?
A. None of the answer choices is correct. B. short light periods C. long dark periods D. short dark periods E. long light periods
Which of the following will increase the unloading of oxygen within the tissue?
A) increased hydrogen ion concentration only B) increased PCO2 only C) increased body temperature only D) both increased hydrogen ion concentration and increased body temperature E) increased hydrogen ion concentration, increased body temperature, and increased PCO2