If an overheated person perspires, this is an example of a ________ mechanism
a. heat stroke
b. positive stimulus
c. negative feedback
d. positive feedback
c
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Ribosomes that do not anchor to the surface of the rough endoplasmic reticulum during translation most probably
A) are synthesizing cytoplasmic proteins. B) have a defect in ribosomal proteins that allow attachment to the ER. C) have a signal/trafficking error. D) do not make the appropriate anchor protein. E) all of the above
The old order Amish in Lancaster County is an
example of a population that underwent
a. a bottle neck. b. mutation. c. a founder effect. d. gene flow. e. genetic drift
While collecting a diverse group of finches, Darwin noticed great variability in the shapes of their bills. However, he incorrectly assumed which of the following.
a. that birds on the same island belonged to the same species b. that birds on the same island did not belong to the same species c. that birds on different islands did not belong to the same species d. that birds on different islands belonged to the same species
The process of gene expression includes two steps: ____________________ and ____________________.
Fill in the blank(s) with the appropriate word(s).