Melatonin is secreted by

a. pancreatic islet cells.
b. the thyroid gland.
c. the pituitary gland.
d. the pineal gland.
e. the kidneys.


D

Biology & Microbiology

You might also like to view...

The process that produces mRNA from DNA is called

A. transcription. B. translation. C. replication. D. processing. E. post-translational modification.

Biology & Microbiology

Filamentous phage

A. only infect E. coli that have pili. B. only infect E. coli lacking pili. C. infect E. coli regardless of the presence of pili. D. do not infect E. coli.

Biology & Microbiology

The ____________________ is the double-layered membrane that connects the lungs and chest wall. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

The primary structure of a protein is the ____________________ in a polypeptide chain Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology