Which of the following molecules is an amino acid with a hydrophobic R-group or side chain?
A) 3
B) 7
C) 10
D) 12
E) 13
Answer: B
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During stressful situations, epinephrine initiates all of the following actions EXCEPT
a. constriction of blood vessels to the skin. b. constriction of blood vessels to the heart. c. dilation of blood vessels to the brain. d. an increase in metabolic rate. e. an increase in blood glucose levels.
You and your class collected plants around campus. You observe that in many plants, one or more leaves attach at common points on the stem. This point on each plant is the
A. axillary bud. B. internode. C. sieve plate. D. petiole. E. node.
In cattle, roan coat color (mixed red and white hairs) occurs in the heterozygous (Rr) offspring of red (RR) and white (rr) homozygotes. Which of the following crosses would produce offspring in the ratio of 1 red:2 roan:1 white?
A) red × white B) roan × roan C) white × roan D) red × roan
Nonreplicative transposition
a. leaves a region of multiple tandem repeats at the donor site. b. leaves the recipient site unaltered. c. leaves a double-strand break at the donor site. d. leaves the donor site unaltered. e. leaves a double-strand break at the recipient site.