What process involves the gradual replacement of plant species in a rainforest over time (for example, as it progresses from an old agricultural field back to a forest)?
A) intertropical convergence
B) desertification
C) succession
D) deforestation
C
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When an enzyme shows Michaelis-Menton kinetics, Km is equal to [S] when the reaction rate is:
A. 0.5 Vmax. B. 0.5 V0. C. 0.1 Vmax. D. 0.1 V0. E. Vmax [S].
Leaks between adjoining cells are stopped by rows of proteins most specifically defined as ________ junctions
a. tight b. cell c. gap d. adhering
When does a chromosome go from one chromatid to two sister chromatids?
A. during the G1 phase of interphase B. during the G2 phase of interphase C. during the S phase of interphase D. during mitosis E. during cytokinesis
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.