Darwin proposed a mechanism for how evolution occurs, which he called _______

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


natural selection

Biology & Microbiology

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Alcohol is a waste product produced by yeast in the presence of sugar and the absence of ________.

A. ATP B. H2O C. CO2 D. O2

Biology & Microbiology

What is the end result of activating the MAP kinase pathway?

A. a change in gene expression B. phosphorylation of multiple cytosolic proteins C. synthesis of second messenger molecules D. ion flow

Biology & Microbiology

Carbon dioxide, which is a breakdown product of the pesticide, is likely used by the bacteria

for which of the following?

a. an energy source b. cell structure c. to carry genetic information d. both an energy source and cell structure

Biology & Microbiology

Neuropeptide neurotransmitters

a. can act as a direct neurotransmitter between neurons and muscle cells. b. can act as a postsynaptic membrane inhibitors. c. directly open K+ channels to inhibit neurons. d. can act as pain reducers and initiate euphoria. e. directly inhibit euphoria.

Biology & Microbiology