In biological nitrogen-fixation, ____
a. ammonia is converted to nitrogen gas
b. nitrogen gas is converted to ammonia
c. ammonia is converted to nitrate
d. amino acids are linked into proteins in ribosomes
e. nitrate is converted to ammonia
ANSWER: b
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Patients with McArdle's Disease lack an enzyme in their livers that catabolizes glycogen. These individuals tire easily during exercise. Which of the following would best explain this symptom?
A. Glycogen is produced from glucose in the blood and then stored in the liver. B. Glycogen synthesis increases the energy available to cells during exercise. C. Glycogen is released from the liver into the blood by the enzyme. D. Glycogen must be broken down to glucose to be used in metabolism.
The portion of the nervous system that is responsible for both increasing heart rate and increasing movement of the
intestines is the ____.
a. peripheral nervous system b. sympathetic nervous system c. parasympathetic nervous system d. somatic nervous system e. interaction between the somatic and autonomic nervous systems
The common law system is:
a) based on tradition, precedent, and custom b) open to giving judges the power only to apply the law c) not as flexible as other systems d) based on a detailed set of laws organized into codes
You have discovered a new invertebrate species that is slow-moving and widely dispersed. What might you predict about its reproductive system?
A. It is likely to be hermaphroditic. B. It is likely to use internal fertilization and brood care. C. Males are likely to be smaller than females. D. Females are likely to be smaller than males.