Which of the following is considered "non-coding" DNA?
A) exons
B) introns
C) genes that are not constantly transcribed but may be turned on in some cells
D) rRNA genes
Answer: B
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Antibodies
A. can target the immunogen for destruction. B. can bind to an immunogen. C. are part of the nonspecific immune response. D. both can bind to an immunogen and can target the immunogen for destruction. E. both can bind to an immunogen and are part of the nonspecific immune response.
If a daughter expresses an X-linked recessive gene, she inherited the trait from
a. her mother. b. her father. c. both parents. d. neither parent. e. her grandmother.
Place the following in order of the movement of urine through the urinary system: (1 ) urethra, (2 ) ureter, (3 ) kidney, (4 ) urinary bladder
A) 3, 4, 1, 2 B) 1, 2, 3, 4 C) 3, 2, 4, 1 D) 1, 3, 2, 4 E) 2, 3, 4, 1
A group of AIDS patients and their families is exposed to the fungus Pneumocystis carinii. There is great concern among the individuals. You have been asked to address the situation. Explain what you would say to the group to give them a plausible treatment strategy.
A. Those with AIDS should be concerned as this fungus attacks T-cells in the same way as does AIDS and thereby increases the severity of the disease. B. Those with AIDS should be concerned as the fungus infects individuals whose immune system has been weakened by AIDS and causes pneumonia. C. Those with AIDS should not be concerned, as the fungus attacks the AIDS pathogen and thereby reduces the severity of the disease. D. Those with AIDS should not be concerned. This fungus is the cause of AIDS-they already have the fungus.