Compared to the mitochondrial intermembrane space, the mitochondrial matrix could be described as having ____ pH

and _____ pyruvate concentration.



a. a lower; higher
b. a higher; higher
c. a lower; lower
d. a higher; lower
e. the same; the same


ANSWER: d

Biology & Microbiology

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A. not changed B. increased C. isotonic D. decreased

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The pain of heartburn is an example of a ____

a. somatic sensation c. sensory adaptation b. visceral sensation d. spinal reflex

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Which region is part of the hindbrain in humans?

1.Telencephalon 2.Cerebrum 3.Thalamus 4.Hypothalamus 5.Medulla oblongata

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The loss of genetic variation likely stemmed from an increase in the mutation rate.

a. true b. false

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