Memory cell production is associated with
a. the body’s first line of defense.
b. the body’s second line of defense.
c. the body’s third line of defense.
d. complement production.
e. acute inflammation.
Answer: c
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Which of the following statements about essential nutrients are true? Essential nutrients _____
I) are necessary for plant growth and reproduction II) are required for a specific structure or metabolic function III) cannot be synthesized by a plant IV) are produced by symbiotic bacteria A) I and IV B) II, III, and IV C) I, II, and III D) I, II, III, and IV
In the preceding experiment, bacteria that form blue colonies on X-gal/IPTG LB agar containing antibiotic also contain
(a) a gene for antibiotic resistance. (b) an active lacZ gene. (c) an inactive lacZ gene. (d) both a and b.
Which of the following molecules would enter the cell via a specialized transmembrane receptor?
A) water B) fatty acids C) cholesterol D) ethanol E) gases
Which of the following is a sterilizing agent?
A. ozone B. hydrogen peroxide C. peracetic acid D. dish soap E. peracetic acid and hydrogen peroxide