What are chemical messengers that control growth differentiation and the metabolism of specific target cells called?

a) hormones
b) neurons
c) glands
d) second messengers


Answer: a) hormones

Biology & Microbiology

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Which of the following is an example of a dehydration synthesis reaction?

A. nucleotides forming DNA B. fats forming into fatty acids and glycerol C. proteins breaking down to form amino acids D. glycogen forming glucose molecules E. amylose breaking down to form maltose molecules

Biology & Microbiology

Human muscle cells use lactic acid fermentation to ________

A) produce more ATP than is possible through complete aerobic respiration B) produce ATP using the electron transport chain C) regenerate NADH D) produce ATP without O2

Biology & Microbiology

A ________ group consists of the most recent common ancestor and some of its descendants.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology