What hormone regulates the metamorphosis of tadpoles into frogs?
A. Melatonin
B. Cortisol
C. Estrogen
D. Somatotropin
E. Thyroid hormone
Answer: E
Biology & Microbiology
You might also like to view...
Which physical feature makes it possible for amniotes to be completely terrestrial?
a. their skin b. their lungs c. their eggs d. their four limbs e. their brains
Biology & Microbiology
Which element is being studied for use in fuel cells to power cars?
a. iron b. hydrogen c. oxygen d. nitrogen e. uranium
Biology & Microbiology
Which of these is a type of posttranscriptional regulation of gene expression?
A) inactivation of tRNA B) alteration of DNA nucleotide sequences C) breakdown of proteins D) binding of transcription factors to enhancers
Biology & Microbiology
Ammonia (NH3) is converted to nitrite (--NO2) by
A. decomposers. B. nitrogen-fixing bacteria. C. nitrifying bacteria. D. denitrifying bacteria.
Biology & Microbiology