A host-parasite interaction between two species is one in which:
a) both species suffer negative consequences.
b) one species is harmed, but the other benefits.
c) both species benefit.
d) one species is harmed, but the effect on the other is neutral
Answer: b) one species is harmed, but the other benefits.
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The human lineage began to diverge from those of other primates about:
A. 153 million years ago B. 210 million years ago C. 6 million years ago D. 18 million years ago E. 64 million years ago
Cross-talk between second messenger pathways is probably involved in particular types of olfactory signal
transduction in many animals.
a. True b. False
You would like to identify as many bacterial species as possible in the human mouth. Why is biochemical testing not the most efficient and accurate method of completing this task?
A. Since you do not know the growth characteristics and metabolic properties of the bacteria in the mouth, you cannot determine all varieties of media to use for isolation and culture. B. Bacteriological media is very expensive, particularly when you would have to use a variety of types to identify the different bacteria. C. Biochemical testing, using a variety of media, is inaccurate. It has been replaced by more advanced testing procedures. D. Bacteria in the mouth are difficult to grow because of the adverse conditions in the oral habitat.
Which of the following show photorespiration
A) C3 plants B) C4 plants C) C3 and C4 plants D) CAM plants