At what location do the molecules and ions that are reabsorbed from the nephron re-enter the blood?
a. at the renal artery
b. at the afferent arteriole
c. at the efferent arteriole
d. at the peritubular capillaries
Ans: d. at the peritubular capillaries
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The persistence of the sickle-cell anemia allele in the
African population is the result of a. a high rate of mutation of the normal allele to the sickle-cell anemia allele. b. the advantage of the heterozygous form over the homozygous forms. c. nonrandom mating. d. a decline in the occurrence of malaria in Africa. e. genetic drift.
Prokaryotes have their genetic information stored in:
a. several small, circular pieces of DNA. b. a single, small, circular piece of DNA. c. a large, linear piece of DNA. d. several small, linear pieces of DNA. e. a large, circular piece of DNA.
Linnaeus's two-word system for naming organisms is called
A.) Greek Polynomials B.) Genus Species C.) Binomial Nomenclature D.) Taxonomic Evolution
Different globin polypeptides are expressed at similar levels during the embryonic and fetal stages of mammalian development.
Answer the following statement true (T) or false (F)