If you were to extract all of the proteins from a leaf and measure the composition of rubisco, you would find that it
comprises about ____% of the total leaf protein.
a. 10
b. 25
c. 50
d. 75
e. 90
ANSWER: c
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Why was the advent of the amniotic egg so important in the evolution of terrestrial vertebrates?
A. It made internal fertilization more likely, so it increased individual species' fitness. B. It completely removed dependence on water for reproduction. C. It reinforced pre-zygotic isolating mechanisms. D. It increased the number of offspring an individual female could have.
Zero population growth is achieved when:
a. a population reaches the carrying capacity of the environment b. number of births is balanced by number of deaths c. births exceed deaths d. immigration exceeds migration e. migration is prevented
A set of regulator genes is known to be very similar in both humans and flies. This fact is used to indicate what about the two species?
What will be an ideal response?
Meat and eggs are sources of _________ fats.
Fill in the blank(s) with the appropriate word(s).