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Figure 9.8
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The following questions refer to the codon table above.
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The first amino acid of a new polypeptide chain is _____________.
A. alanine
B. cysteine
C. variable
D. phenylalanine
E. methionine
Answer: E
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A newborn who is accidentally given a drug that destroys the thymus would most likely _____
A) lack class I major histocompatability (MHC) molecules on cell surfaces B) lack innate immunity C) be unable to genetically rearrange antigen receptors D) be unable to differentiate and mature T cells E) have a reduced number of B cells and be unable to form antibodies
Evaporation from the Earth's surface is determined by all of the following except:
A. wind. B. solar radiation. C. soil acidity. D. altitude. E. precipitation.
A newborn is identified as having cystic fibrosis. While both parents are healthy, a genetic screening of both parents will most likely reveal:
A. the father is a carrier of the mutant CF allele. B. the mother is a carrier of the mutant CF allele. C. both mother and father are carriers of a mutant CF allele. D. neither mother nor father are carriers; spontaneous mutation caused the baby's disease.
Essentially all exchange of gases and other materials between the circulatory system and tissues of the body or the outside world (e.g., in the lungs) occurs in the
A. capillaries. B. arteries. C. veins. D. heart. E. lymphatic system.