During the cephalic and absorptive phases, the pancreas releases a great deal of __________ into the blood stream and very little __________.
Fill in the blank(s) with the appropriate word(s).
insulin; glucagon
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Which of the following refers to the flow of hydrogen ions across the mitochondrial membrane?
a. Chemiosmosis b. Diffusion c. Citric acid cycle d. Oxidative phosphorylation
The proportion of individuals in a population that are of a particular phenotype is the
A) phenotype frequency. B) genotype frequency. C) allele frequency. D) None of the choices is correct.
In a food chain, primary consumers occupy the first trophic level
____________________ Indicate whether the statement is true or false.
A factory with an office that controls the information sent to separate rooms for each of the manufacturing and shipping processes would be analogous to
a. a virus. c. a prokaryotic cell without a nucleus. b. a prokaryotic cell with a nucleus. d. a eukaryotic cell with a nucleus.