Which of the following substances is absorbed by the stomach?
a. glucose
b. caffeine
c. aspirin
d. amino acids
e. fatty acids
C
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Which of the labeled structures in the diagram contains centers that control heart rate and blood pressure?
a) A b) B c) D d) E e) F
What lobe of the brain is situated most posteriorly (back of the head)?
a. parietal b. occipital c. temporal d. posterior e. cerebral
When the alleles of a gene are both expressed equally, the alleles show a form of inheritance called
A) codominance. B) polygenic inheritance. C) recessive inheritance. D) sex linkage. E) heterozygosity.
Impotence occurs when
A. sperm cell production decreases. B. an erection cannot be achieved or maintained. C. semen moves out of the urethra. D. the erectile tissues of the penis fill with blood. E. semen accumulates in the urethra.