While touring the ancient Egypt exhibit at the local history museum, you learn that ancient Egyptians would slash figs in order to stimulate ripening. Based on your knowledge of plant hormones you hypothesize that wounding the figs must release
A. gibberellin.
B. abscisic acid.
C. indoleacetic acid.
D. ethylene.
E. cytokinin.
Answer: D
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After death, the lack of ATP stops the dissociation of cross-bridges, and the muscle is locked in a stiff, rigid state called ________.
Fill in the blank(s) with the appropriate word(s).
The ____ are potentially pathogenic to humans
a. Archaea
b. Bacteria c. Archaea and Bacteria d. cyanobacteria e. methanogens
A genetic abnormality that may result in males with mental retardation and reduced fertility is
a. XXY. b. XYY. c. Turner syndrome. d. Down syndrome. e. XXX.
A sodium ion (Na+) has a net charge of positive one; to become ionized, sodium must _____.
A) gain one positively charged proton B) gain one positively charged neutron C) lose one negatively charged electron D) gain one positively charged positron