Bioremediation uses microbes to
A.) break down food
B.) clean up pollutants
C.) convert atmospheric nitrogen
D.) produce carbohydrates
Ans: B.) clean up pollutants
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It has been hypothesized that fungi and plants have a mutualistic relationship because plants make sugars available for the fungi's use. What is the best evidence in support of this hypothesis?
A) Fungi survive better when they are associated with plants. B) Radioactively labeled sugars produced by plants eventually show up in the fungi with which they are associated. C) Fungi associated with plants have the ability to undergo photosynthesis and produce their own sugars, while those not associated with plants do not produce their own sugars. D) Radioactive labeling experiments show that plants pass crucial raw materials to the fungus for manufacturing sugars.
Osmoregulation is best defined as:
A. the control of osmotic pressure through regulation of water and solute levels. B. the movement of water from areas of lower solute concentration to areas of higher solute concentration. C. the difference in solute concentration on the two sides of a membrane. D. the movement of water through aquaporins. E. the regulation of membrane permeability.
Mitosis takes place in which region of the root?
a. zone of maturation b. root cap c. zone of elongation d. meristem region e. region of differentiation
List five mechanisms by which gene frequencies in a population can be altered. Describe each briefly
What will be an ideal response?