The Holocene epoch marks the appearance of:
a. humans.
b. reptiles.
c. amphibians.
d. large mammals.
e. marine vertebrates.
a
Biology & Microbiology
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The major mechanism of evolution is
(a) species development. (b) predation. (c) fitness. (d) natural selection.
Biology & Microbiology
Your liver produces 90% of the cholesterol found in your body. When cholesterol levels get too high, the first enzyme in the pathway of cholesterol synthesis is inhibited. This is an example of:
A. Denaturation B. Equilibrium C. Feedback inhibition D. A coenzyme E. Positive feedback
Biology & Microbiology
The first known multicellular organisms evolved approximately how many years ago?
A. 3.5 BYA B. 1.4 BYA C. 2.1 BYA D. 100 MYA
Biology & Microbiology
Match the following
0.03mm A) 300um B) 3000um C) 30um
Biology & Microbiology