Distilled water would be considered ____ to body cells
a. isotonic
b. hypertonic
c. hypotonic
d. protonic
e. aquatonic
C
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Which of the following statements about essential nutrients are true? Essential nutrients _____
I) are necessary for plant growth and reproduction II) are required for a specific structure or metabolic function III) cannot be synthesized by a plant IV) are produced by symbiotic bacteria A) I and IV B) II, III, and IV C) I, II, and III D) I, II, III, and IV
According to the acid-growth hypothesis, auxin works by _____
A) dissolving sieve plates, permitting more rapid transport of nutrients B) dissolving the cell membranes temporarily, permitting cells that were on the verge of dividing to divide more rapidly C) changing the pH within the cell, permitting the electron transport chain to operate more efficiently D) increasing wall plasticity and allowing the affected cell walls to elongate E) greatly increasing the rate of deposition of cell wall material
The deer population in many parts of the northeastern United States is perceived to be out of control. What solutions to this problem would you deem to be the most feasible? (Select and defend one or more of the solutions listed below.) a. Increasing human predation by increasing the length of hunting season . b. Lowering the birth rate of the deer by putting out feed laced with
birth-controlchemicals. c. Increasing the rate of predation by re-introducing natural predators such asbobcats and mountain lions. d. There is no absolute correct answer to this question since each choice, althoughit will impact the deer population, has its pros and cons.
Tapeworms and flukes are examples of ____
a. commensalism b. mutualism c. competition d. predation e. parasitism