The extracellular state of a virus is referred to as a
a. virion.
b. viroid.
c. capsid.
d. lysogen.
Answer: A
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The first enzyme in glycolysis is hexokinase. What does it do?
a. Hexokinase facilitates diffusion of glucose through the cell membrane. b. Hexokinase moves glucose into the mitochondria to initiate glycolysis. c. Hexokinase catalyzes the phosphorylation of glucose to produce glucose-6-phosphate. d. Hexokinase destabilizes fructose-1,6-biphosphate to prepare it for cleavage.
Which of the following organelles will be concentrated in the first pellet produced by differential centrifugation?
a. Mitochondria b. Nuclei c. Endoplasmic reticulum d. The cytosol
__________ released by the hypothalamus causes the pituitary gland to secrete __________ and follicle-stimulating hormone (FSH).
Fill in the blank(s) with the appropriate word(s).
Communities evolve to have greater biomass and species richness in a process called
A. succession. B. adaptive modifications. C. competitive exclusion. D. sympatric interactions. E. symbiotic relationships.