Bacteriophage that only exhibit lytic replication cycles are called ________ phages.
A. lytigate
B. temperate
C. intemperate
D. virulent
Answer: D
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Bird guides once listed the myrtle warbler and Audubon's warbler as distinct species. Recently, these birds have been classified as eastern and western forms of a single species, the yellow-rumped warbler
Which of the following pieces of evidence, if true, would be cause for this reclassification? A) The two forms interbreed often in nature, and their offspring have good survival and reproduction. B) The two forms live in similar habitats. C) The two forms have many genes in common. D) The two forms have similar food requirements. E) The two forms are very similar in coloration.
Imagine that you are monitoring a test subject's blood. The pH of the blood is steadily decreasing, while the carbon dioxide levels are steadily increasing. What do you predict will occur?
A. Because of the increase in carbon dioxide levels, the brain will decrease in the breathing rate. B. Because of the increase in carbon dioxide levels, the brain will stimulate an increase in the breathing rate. C. As soon as oxygen levels decrease, the brain will stimulate an increase in the breathing rate.
Which group of plants responds to increased CO2 with the highest biomass enhancement ratio?
A) C3 B) C4 C) CAM D) all respond equally
Photosystem I Electrons excited in photosystem I help the chloroplast produce
a) NADPH. b) ATP. c) glucose. d) water. e) NADH.