All of the following factors influence the rate of photosynthesis EXCEPT
A) atmospheric CO2 levels.
B) water availability.
C) temperature.
D) atmospheric N2 levels.
E) light intensity.
D
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Taxol, a secondary metabolite from the bark of the Pacific yew tree, is used as a treatment for
A. diabetes. B. breast cancer. C. indigestion. D. headaches. E. high blood pressure.
A plant growth response to mechanical stress, such as rain and contact with passing animals, is known as:
a. phototropism. b. gravitropism. c. thigmomorphogensis. d. a circadian rhythm.
e. thigmotropism.
Which of the following is an example of feeding behavior that has a high energy intake to effort ratio?
a) human children eating dirt b) crabs eating mussels that are intermediate in size c) geese retrieving the largest egg-like object near their nests d) a monkey reaching over a snake to get a peanut e) vampire bats sharing blood meals with non-relatives
A man with a dirty cut on his hand appears at the emergency department for treatment. In order to clean the wound, the health-care provider should use
A) a solution of very low pH. B) a solution of sterilized tap water. C) a weak (low concentration) solution of salt water. D) distilled water.