Three fatty acids bonded together with a glycerol are found in a(n)
A. enzyme.
B. phospholipid.
C. triglyceride.
D. chlorophyll pigment.
E. alcohol.
Answer: C
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Small quantities of hormone can result in profound responses in target tissues. This type of response is referred to as
a. amplification b. a first messenger response c. a gene activation response d. a neural response e. a growth factor response
19th-century naturalists tried to reconcile traditional beliefs with physical evidence of __________. Fill in the blank(s) with the appropriate word(s)
Which of the following hormones is indicative of the presence of a developing embryo and thus is the basis of home pregnancy tests?
A. hCG B. progesterone C. estradiol D. FSH E. LH
A neuropeptide that functions as a natural analgesic is _____
A) acetylcholine B) epinephrine C) endorphin D) nitric oxide E) gamma-aminobutyric acid (GABA)