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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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
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.
How many membranes surround each chloroplast?
A) 1 B) 2 C) 3 D) 4
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