Chem 210 Biochemistry Test 3_Portage

Test #3

CORRECT ANSWERS IN RED



Question 1

True or False: The amino acids cysteine and serine both contain sulfur atoms.

True

False



Question 2

True or False: The following secondary structure shown below is an example of an Antiparallel beta
sheet.

True

False



Question 3

True or False. The side chain of leucine is bonded to the backbone nitrogen atom.

True

False



Question 4

True or False: The name of the molecule that binds to an enzyme is called the apoenzyme.

True

False



Question 5

True or False: An inhibitor that binds at the active site is an uncompetitive inhibitor.

True

False




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, Question 6

Which amino acids both have an R group (side chain) with an -OH functional group?

Leu and Ile

Ala and Ser

Ser and Thr

You Answered

Asp and Asn

Ser and Cys



Question 7

The formation of a peptide bond between two amino acids is an example of a(n) _____ reaction.

Cleavage

Condensation

Group transfer

You Answered

Isomerization

Double-bond breaking



Question 8

The peptide Ala-Glu-Gly-Ala-Leu has ______ .



A disulfide bond

Five peptide bonds

Four peptide bonds

A proline residue

No C-terminal



Question 9




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