The net distance a molecule travels through the cytosol via diffusion is relatively short in comparison with the total distance it may need to travel
This is because movement governed by diffusion alone is a ________________ process that is most effective for the dispersion of small molecules over short distances.
(a) slow
(b) random
(c) regulated
(d) complicated
(a)
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Obligate aerobes may transform energy via fermentation
Indicate whether this statement is true or false.
While aboard the H.M.S. Beagle, Darwin was given a book, called Principles of Geology, which primed him to apply
____ to the living world.
a. the modern synthesis and orthogenesis b. genetics and biogeography c. natural theology and uniformitarianism d. catastrophism and gradualism e. gradualism and uniformitarianism
Koopmans (1981) transplanted an extra stomach and length of intestine into rats and then joined the major arteries and veins of the implants to the recipients' circulatory systems. He found that food injected into the transplanted stomach and kept there by a noose around the pyloric sphincter:
(a) decreased eating in proportion to both its caloric content and volume (b) increased eating in proportion to both its caloric content and volume (c) did not affect eating (d) produced a conditioned taste aversion for the injected food
The chromosomes line up in the middle of the cell during
A) prophase. B) anaphase. C) metaphase. D) telophase. E) prophase II.