The production of second messengers in signal transduction offers at least two advantages, speed and

A. reversibility.
B. amplification.
C. one-to-one stoichiometry.
D. specificity.
E. affinity.


Answer: B

Biology & Microbiology

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Which brain region is most likely to contribute to the establishment of motor memory, the ability to perform complex

motor skills?

a. frontal cortex b. cerebellum c. hypothalamus d. amygdala e. brain stem

Biology & Microbiology

The information in the table shows the possible genotypes resulting from the mating of two heterozygotes AaDd. The allele A codes for normal pigmentation, a for albinism, D for dimpled chin, and d for non-dimpled chin. What fraction of offspring would be expected to be albino with a non-dimpled chin?

What will be an ideal response?

Biology & Microbiology

The component(s) of a virus that is/are extended from the envelope for attachment is/are the:

A) capsomeres B) spikes C) nucleic acid D) viral whiskers

Biology & Microbiology

It takes the Earth ________ to orbit around the sun.

A. 1 month B. 1 day C. 1 year D. 12 hours

Biology & Microbiology