The chemical differences between one amino acid and another is due to which of the following?
a) Amino group
b) Carboxyl group
c) R group
d) Peptide bond
e) Carbon atoms
Answer: c) R group
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Florists often create brightly colored flowers by immersing the stems in colored water. Which
cells are primarily responsible for this color change?
a. phloem b. xylem c. xylem and phloem d. neither xylem nor phloem
Which of the vertebrates senses is the least well understood?
A. electroreception B. magnetoreception C. vision D. hearing E. touch
If a pedigree of several generations shows only females affected by a particular trait, what can be ruled
out? A. Autosomal recessive inheritance D. X-linked recessive inheritance B. X-linked dominant inheritance E. None of these can be ruled out C. Y-linked inheritance
Which of the following methods of preserving food sterilizes it?
A) canning B) pasteurization C) drying D) gamma radiation E) lyophilization