Electron microscopes differ from light microscopes in that
(a) electrons are used instead of light.
(b) magnetic lenses replace glass lenses.
(c) the electron path had to maintained in a high vacuum.
(d) a, b, and c are all true.
(d) a, b, and c are all true.
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When NADPH _____ electrons in the Calvin cycle, it is ______, forming NADP+.
A. donates, hydrolyzed B. donates, reduced C. donates, oxidized D. accepts, oxidized E. accepts, reduced
What happens to the total biomass available as you move up a food chain? Does it increase, decrease or stay the same?
A) decrease. B) increase. C) not change. D) none of the above.
Which of the following is NOT one of Darwin's postulates?
A) Luck is an important factor in determining the fate of individuals. B) Through natural selection, individuals with useful traits survive longest and leave the most offspring C) Some of the differences seen in a population result from characteristics passed from parent to offspring. D) In each generation, some individuals reproduce and others don't. E) There is variation among members of a population.
These days many of our food crops are genetically modified. To some people this "frankenfood" poses many dangers and should not be used. Do you agree? Why or why not?
What will be an ideal response?