The main nitrogenous waste of adult amphibians is:

a. ammonia.
b. urea.
c. uric acid.
d. peptides.
e. purines.


B

Biology & Microbiology

You might also like to view...

The ____ of the plant refers to the structure and arrangement of its internal parts

a. morphology b. ecology c. anatomy d. distribution e. physiology

Biology & Microbiology

Estimates vary, but reasonable estimations of extinction rates suggest that extinction is occurring at a

rate approximately __________ above the normal background rate. a. 10 b. 100 c. 1000 d. 10,000 e. 1,000,000

Biology & Microbiology

transcription ends when RNA polymerase reaches a

What will be an ideal response?

Biology & Microbiology

The organelle responsible for harvesting light as an energy source for photosynthesis is the ________.

A. centriole B. mitochondrion C. chloroplast D. kinetoplast

Biology & Microbiology