The tertiary structure of proteins is typified by the:a
association of several polypeptide chains by weak bonds.
b. order in which amino acids are joined in a peptide chain.
c. bonding of two amino acids to form a dipeptide.
d. folding of a peptide chain to form an alpha helix.
e. three-dimensional shape of an individual polypeptide chain
E
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What characteristic distinguished Progymnosperms from conifers?
a. a single megaspore within the antheridium b. the ability to hibernate during droughts c. reproduction via spore dispersal d. a strobilus containing a single megaspore
Anchovies are an efficient fish to catch because they:
a. are grazers. b. are filter feeders. c. travel in large dense schools. d. are small fish. e. swim quickly.
A difference in the number of particles in two neighboring solutions is a(n) ____________________. Fill in the blank(s) with the appropriate word(s)
A frog that lacks chemical defenses, yet resembles a poison arrow frog, would exhibit:a
Batesian mimicry. b. mutualism. c. camouflage. d. Müllerian mimicry. e. epistasis.