Each of the following is a product of the citric acid cycle except
A) CO2.
B) ATP.
C) NADH.
D) acetyl CoA.
E) FADH2.
Answer: D
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A human cell and a mouse cell were experimentally fused, and the results demonstrated that ________
a. proteins cannot move laterally in the membrane b. large polar molecules can enter cells only through transport proteins c. proteins can move laterally in the plasma membrane d. human/mouse chimeric embryos are not viable
The main regulator of calcium blood levels is the ____
a. parathyroid glands b. thyroid glands c. hypothalamus d. anterior pituitary gland e. posterior pituitary gland
Hawthorn maggot flies that breed on native hawthorns or introduced European apples can mate in the lab, but rarely mate in the wild. This is an example of _____ reproductive isolation.
A. postzygotic B. prezygotic C. allopatric D. sympatric E. outgroup
Efficient propagation of action potential regulated by myelin sheets and Nodes of Ravier is known as (i)_______________.
a) (i) Saltatory conduction b) (i) EPSP c) (i) synaptic integration d) (i) summation