The most destructive form of oxygen is
A. singlet oxygen.
B. the superoxide radical.
C. the peroxide anion.
D. the hydroxyl radical.
Ans: D. the hydroxyl radical.
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The symptoms of malaria are
A. jaundice B. abdominal cramps C. diarrhea and dehydration D. headaches and nausea E. alternating chills and fever
Which of the following has X-linked recessive inheritance?
a. Duchenne muscular dystrophy b. phenylketonuria c. achondroplasia d. sickle-cell anemia e. cystic fibrosis
The first amino acid that is assembled in
translation is
a. methionine b. valine c. lysine d. phenylalanine e. glycine
SIV causes symptomless infections in monkeys and apes, yet causes AIDS-like disease in chimpanzees. HIV is closely related to SIV and causes AIDS in humans. Which of the following is the best explanation for these observations?
a. Monkeys, apes, and chimpanzees are all genetically very similar b. The effects of viruses on different species is random c. Chimpanzees and humans have a more recent common ancestor d. SIV is most likely lytic in apes and monkeys e. SIV is most likely latent in chimpanzees