The appendix is a vestigial structure in humans
Indicate whether the statement is true or false.
ANSWER: True
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Once glucose has entered a cell, what prevents it from diffusing back out of the cell?
a. Glucose pumps actively transported any leaked glucose back into the cell. b. One side of the cell membrane is permeable to glucose, but the other side is not. c. Glucose inhibitors attach to glucose once it’s in the cell. d. Glucose is phosphorylated, preventing it from leaving the cell. e. Glucose is hydrolyzed into two three-carbon molecules that cannot diffuse in a reverse direction.
Which of the following is a source of genetic variation in a population caused by epistatic interactions between genes?
A) Additive genetic variance B) Dominance variance C) General environmental effects D) Interaction variance E) Maternal effect
Figure 45.6A
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The image in the above photograph is a prime example of ____.
A. double mutualism B. associative commensalism C. interference competition D. team predation E. parasitism
Mechanisms of adaptive immunity include ________
A) restriction enzymes B) learning from past exposures C) blocking phage adsorption D) blocking phage DNA insertion