The medium in the primary explant contains PBS made 0.5 % with trypsin and 3mM with MgCl2.
a. true
b. false
Ans: a. true
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Under what conditions would you expect a plant to have the highest concentration of abscisic acid (ABA)?
A) wet tropical rain forest B) cool environment after a heavy rain C) houseplant growing in low light conditions D) desert after a long drought
Cleft palate is ____
a. controlled only by genetics b. a continuously distributed trait c. controlled by a single gene pair d. only transmitted from father to son e. explained by the threshold model of complex traits
How many membranes surround each chloroplast?
A) 1 B) 2 C) 3 D) 4
Biological magnification refers to the
1.increase in size of animals as they progress through a food chain. 2.increase in size of organisms as they progress through ecological succession. 3.increase in the efficiency of energy utilization as organisms progress through a food chain. 4.accumulation of toxic pollutants as animals pass through a food chain. 5.growth of organ size within organisms.