Second messengers are molecules of

a. steroid compounds.
b. cyclic AMP.
c. ADP.
d. prostaglandin.
e. intermedin.


B

Biology & Microbiology

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Which of the following factors would also affect tree growth, and thus complicate the experiment described above?

A. the presence of other tree parasites B. the distribution of nutrients in each tree's local environment C. the amount of leaves, and thus photosynthetic production, of each of the trees D. the ambient light conditions, and thus photosynthetic production, for each of the trees E. All of responses above would also affect the growth of the trees, and thus complicate the experiment described above.

Biology & Microbiology

Mouse pigmentation is subject to epistasis of the B alleles by the d alleles. B (black) is dominant over b (brown), and

D is dominant over d. Homozygous d is epistatic to the black and brown genes. Given this information, what genotype(s) result in a white mouse (no pigment)?

a. BBdd only b. Bbdd only c. bbDD only d. bbDd only e. BBdd and Bbdd

Biology & Microbiology

What is the term for zooplankton with water bodies?

a. Mesoplankton b. Pluestonic cnidarians c. Gelatinous zooplankton d. Holoplankton

Biology & Microbiology

While examining the sequence of nucleotides in the replicon region of bacterial DNA, you note an abundance of adenine and thymine base pairs. This leads you to conclude that this particular section of the DNA must be the ________.

A. oriC site B. Pribnow box C. ter site D. Shine-Dalgarno sequence

Biology & Microbiology