Alternate forms of a gene are called ____
a. homologues
b. loci
c. alleles
d. homozygous
e. heterozygous
ANSWER: c
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A vaccine that protects against infection of some strains of genital HPV also protects against:
a. cervical cancer b. AIDS c. autoimmune diseases d. breast cancer e. genital bacterial infection
Before messenger RNA fully matures,
a. all exons are deleted and removed. b. a poly-A tail and modified guanine “cap” are added. c. anticodons are assembled. d. the transfer RNA transfers the messenger RNA to the ribosome. e. the single RNA strand duplicates itself in much the same way as DNA.
Each of the following is a characteristic of hormones except
A) synthesis by endocrine tissue cells. B) secretion directly into the bloodstream. C) having a hormone-specific lifespan in the blood ranging from seconds to hours. D) interacting with specific receptors on cells in target tissues throughout the body. E) All are characteristics of endocrine hormones.
Operant conditioning proceeds through trial and error.
Answer the following statement true (T) or false (F)