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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A neuropeptide that functions as a natural analgesic is _____
A) acetylcholine B) epinephrine C) endorphin D) nitric oxide E) gamma-aminobutyric acid (GABA)
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
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)