Which one of the following is NOT required for aerobic cellular respiration to take place?
A. enzymes
B. NAD
C. oxygen
D. carbon dioxide
D. carbon dioxide
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When viruses are classified according to capsid shape, which of the following would have a naked helical morphology?
a. HIV b. herpes simplex virus c. tobacco mosaic virus d. bacteriophage
An organism maintaining homeostasis with respect to sodium ion concentration in the blood would ______sodium excretion in the kidneys when sodium levels were low and ______ sodium excretion when sodium levels were high
a. maintain constant; maintain constant b. increase; maintain constant c. increase; decrease d. decrease; maintain constant e. decrease; increase
Breathing that stops briefly and then resumes spontaneously is called
a. apnea. b. tachypnea. c. bradypnea. d. pneumotaxia. e. hyperventilation.
Which of the following is false about the lepromatous form of leprosy?
A) The lepromatous form is more common than the milder tuberculoid form. B) The lepromatous form causes irreversible tissue damage in the form of macules, papules, and nodules in many places on the body. C) The lepromatous form can spread to others. D) Without treatment, lepromatous leprosy is often fatal. E) The lepromatous form is more serious than the tuberculoid form.