What was one of the primary results from the Hubbard Brook Watershed Project?
a. Deforestation increases flooding.
b. New plant species that absorb less water were discovered.
c. Pollution gravely affected the water supply.
d. Primary consumers are the most important part of the energy pyramid.
e. Trees absorb too much water and are not useful in a watershed area.
ANSWER: a
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(a) the survival of populations. (b) the process that results in changes in the genetic makeup of a population over time. (c) a group of individuals of the same species occupying a given area. (d) change in an individual’s genetic makeup over its lifetime.
The Kd for a protein-ligand interaction is:
A. the rate at which the protein binds ligand. B. the square root of the equilibrium constant. C. the fraction of ligand-binding sites occupied at equilibrium. D. the ligand concentration at which half of the available ligand-binding sites are occupied. E. None of these choices is correct.
Oxygen-poor blood circulates through the component(s) labeled as ____
a. A b. B c. C d. D e. A, C, and E
The substrate is
A. the material changed by an enzyme. B. a coenzyme. C. the material formed by an enzyme. D. always a protein.