The most important feature of a protein is its

A. secondary structure.
B. side group.
C. shape.
D. electric charge.


C

Biology & Microbiology

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Pheromones are used primarily for

a. signaling target cells in the vicinity of the secreting cells. b. stimulating transmitter release at certain synapses. c. integrating social behavior in a population. d. causing a response in a part of the body some distance from the site of secretion. e. all of these, depending on the species.

Biology & Microbiology

Natural selection has favored the dark form of the peppered moth in areas subject to severe air pollution, perhaps because on darkened trees, moth-eating birds see them less easily. As pollution abated, the light forms increased in the population because

A. birds ate more light moths. B. light moths had lower fitness than dark moths. C. light moths were more genetically variable than dark moths. D. light moths were able to produce more offspring than dark moths.

Biology & Microbiology

The medically useful compounds some actinomycetes produce when forming aerial mycelia are called ________.

A. secondary metabolites B. primary metabolites C. inhibitory metabolites D. antimetabolites

Biology & Microbiology

The Salalizard is a fictional vertebrate that lives in the forest and appears to be half salamander and half lizard. You are not allowed to collect any wild animals, so you decide to take a video of it to show your colleagues. What behavior best

distinguishes the Salalizard as either a salamander (amphibian) or a lizard (reptile)? A) what the animal eats B) if it lives in trees C) where it reproduces D) whether it is active at night

Biology & Microbiology