Why is it believed that RNA was the first informational molecule to evolve?
a. RNA molecules can replicate into DNA molecules.
b. RNA molecules are more central to modern inheritance than DNA.
c. RNA molecules degrade more slowly in solution than DNA molecules.
d. RNA molecules are much simpler structures than other macromolecules.
e. RNA molecules are able to function as both enzymes and substrates for their own replication.
e
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Which chemical has five carbon atoms?
a. phosphoglycerate (PGA)
b. ribulose bisphosphate (RuBP) c. phosphoglyceraldehyde (PGAL) d. glucose e. starch
The coxal bones of the pelvic girdle meet in front at the ________, where they are joined by cartilage
Fill in the blank(s) with correct word
Refer to Figure 40-1. Which labeled portions of the skin would be affected by UV light?
a. 1 and 5
b. 1 and 15
c. 5 and 15
d. 5 and 14
e. 1, 14, 15
The experiments that demonstrated that meat does not spontaneously generate maggots were conducted by
A) Francisco Redi. B) Harold Urey. C) Louis Pasteur. D) Sidney Altman. E) Alexander Oparin.