Ionotropic receptors are linked to
A) ribosomes.
B) neurotransmitters.
C) ligand-activated ion channels.
D) vesicles.
E) G proteins.
Answer: C
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Breast-feeding provides benefits to mothers such as reducing the risk of breast and ovarian cancers, building bone strength, reducing the risk of osteoporosis, and
a. helping shrink the uterus after delivery. b. reducing the chances of becoming obese. c. creating immunity to common illnesses, such as colds. d. There are no benefits for mothers, just for infants
When the relationship between the unit of measurement of a scale (strength) and an outcome (pounds lifted) can be described by a linear equation Y = a + bX, the scale is said to have what property?
a. Magnitude b. Equal intervals c. Absolute zero d. Nominal
Susan is going on a blind date with Michael. When she first meets Michael, she notices that he has long hair, an earring, and wears a leather jacket. She decides that Michael is rebellious, dangerous, and aggressive. She is basing her judgments on which of the following factors?
A. the two-way process B. seeking information C. the need to explain D. social consequences
Which theory of aging maintains that the stiffening of body proteins accelerates and eventually breaks down bodily processes, leading to some of the effects of aging?
A. cross-linking theory B. tether-and-hold theory C. congealed-tissue theory D. cellular-polymerization theory