The tertiary structure of a protein is dependent on
A. the side chain composition of each amino acid within the protein.
B. hydrogen bonding between the carboxyl and amino groups within the polypeptide chain.
C. the interactions of multiple polypeptide chains that make up a functional protein.
D. the way in which the peptide bond forms.
E. the degree through which the dehydration reaction occurs.
A. the side chain composition of each amino acid within the protein.
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Nitrogen-containing bases between two complementary DNA strands are joined by
(a) polar covalent bonds. (b) hydrogen bonds. (c) phosphate groups. (d) deoxyribose sugars.
RNA viruses can use their RNA to produce DNA
because they carry __________ enzymes. a. reverse transcriptase b. restriction c. endonuclease d. polymerase e. ligase
Thick-skinned rhinoceroses and elephants were once classified together as pachyderms. They actually descended from different ancestors that in turn evolved from a thin-skinned common ancestor that was not included in the pachyderms. Pachyderms were therefore, as a taxon,
A. polyphyletic. B. polygenetic. C. paraphyletic. D. a supergroup. E. a kingdom.
During anaerobic metabolism, pyruvate is broken down to __________
a. lactic acid b. water c. oxygen d. ATP