Which procedure would you use to detect a nutritional mutation in microorganisms?
A) Visible inspection
B) Replica plating
C) Controlled crosses
D) Isolation at high temperature
E) Plating on antibiotic-containing medium
B
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Which forms of nitrogen are readily usable by plants?
a. NH3, NH4+ and NO3- b. NH4+ and NO2- c. N2 and NH3 d. NH4 and NH3 e. NO3- and NO4-
A miRNA’s normal job is to inactivate a tumor suppressor gene. If this miRNA is made in abnormally
high amounts,
a. the cell will become cancerous b. the tumor suppressor gene will be overactive c. the cell will not express the tumor suppressor gene as highly as it should d. the cell will stop growing e. the cell will begin to differentiate
As a cell becomes larger, its
A) volume increases faster than its surface area. B) surface area increases faster than its volume. C) volume increases, but its surface area stays the same. D) surface area stays the same, but its volume increases.
A patient who ingested a significant amount of ethylene glycol 6 hours ago would MOST likely present with:
A) slurred speech and ataxia. B) hypertension and tachycardia. C) an ethanol odor on the breath. D) flank pain and absent urination.