If a replication fork stalls at a lesion the usual first response is:
A. strand invasion.
B. branch migration.
C. fork regression.
D. formation of a Holliday intermediate.
E. initiation of gap repair.
C
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Which of the following is true of a lysosome?
A) The lysosome may mature from a late endosome. B) The lysosome may function in glycosylation. C) The contents of the lysosome originate in the smooth ER. D) The lysosome functions in export packaging. E) all of the above
The synthesis of ____ is triggered when cells bind systemin
a. gibberellin b. auxin c. jasmonate d. cytokinin e. brassinosteroids
What would happen if the trachea did not have cartilaginous rings?
A) Incoming air would not undergo filtration. B) Incoming air would not be humidified. C) Sense of smell would be lost, and food would taste funny. D) The trachea would collapse.
Tritiated hydrogen (3H) differs from hydrogen (1H) in that
A. 3H has 2 more electrons than 1H. B. 3H has 2 more neutrons than 1H. C. 3H has the same number of neutrons as 1H. D. 3H has a different electron configuration than 1H. E. 3H has 2 more protons than 1H.