Which plant hormone produced in apical meristems inhibits the growth of axillary buds?
A. gibberellin
B. abscisic acid
C. ethylene
D. cytokinin
E. auxin
Answer: E
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The wild-type pUC19 plasmid (blue plasmid) contains genes for
(a) antibiotic resistance. (b) activation of ?-galactosidase production. (c) both a and b. (d) none of these choices.
Discuss how environmental factors can have a negative impact on the development of a fetus. What will be an ideal response?
In Pasteur's swan-neck flask experiment, the importance of the S-shaped curves in the flasks was twofold. The curves allowed entry of air but excluded __________.
a. airborne microorganisms b. nutrients c. heat d. viruses e. oxygen
Because organisms are made primarily of water, they resist rapid temperature changes. This useful quality is based on water's _____.
a. cohesion b. lower density in the solid phase c. high specific heat d. buffering activity e. ability to form colloids