One of the many types of proteins found in the cytoplasmic membrane is involved in the chemotactic response and is called a

A) hydrolytic enzyme.
B) chemoreceptor.
C) binding protein.
D) porin.


Answer: B

Biology & Microbiology

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True or False: Individuals in a group often exchange favors. This reciprocal interaction provides one explanation for the evolution of altruism

A. true B. false

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Out of the biomes listed, which receives the most precipitation?

a. tundra b. boreal forest c. chaparral d. savanna e. grassland

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One current estimate claims that humans are responsible for the extinction of how many species per

hour? a. 2 b. 3 c. 4 d. 5 e. 6

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A female who is Rh-

A. can never have an Rh+ baby. B. inherited two dominant genes. C. is in the majority of the population with regard to Rh status. D. is at risk for a pregnancy resulting in hemolytic disease of the newborn.

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