BIO322-AF: BioChem Exam #1 CHAPTER 18 MCGRAW
(McCarley SCUHS) Questions With Complete Solutions
______________ (OF A PROTEIN):
The linear sequence of AAs in a protein chain determined by the
genetic information fo the gene for each protein.
A. PRIMARY STRUCTURE
B. SECONDARY STRUCTURE
PRIMARY STRUCTURE
________________ (of a protein):
Folding of the PRIMARY STRUCTURE of a protein into an α-
helix or a β-pleated sheet; folding is maintained by
HYDROGEN BONDS between the AMIDE HYDROGEN and
the CARBONYL OXYGEN of the PEPTIDE BOND.
A. PRIMARY STRUCTURE
B. SECONDARY STRUCTURE
SECONDARY STRUCTURE
SECONDARY STRUCTURE (of a protein):
Folding of the PRIMARY STRUCTURE of a protein into an
α-helix or a β-pleated sheet; folding is maintained
by ______________ between the AMIDE HYDROGEN and
the CARBONYL OXYGEN of the PEPTIDE BOND.
A. HYDROGEN BONDS
,B. COVALENT BONDS
HYDROGEN BONDS
The most common form of a SECONDARY STRUCTURE is
a coiled, helical conformation known as
the ________________.
A. ALPHA-HELIX (α)
B. BETA-PLEATED SHEET (β)
ALPHA-HELIX
TRUE OR FALSE:
The HYDROGEN BONDS of the α-helix are PARALLEL to
the long axis of the helix
A. TRUE
B. FALSE
TRUE
TRUE OR FALSE:
The POLYPEPTIDE CHAIN of the α-helix is RIGHT-
handed.
A. TRUE
B. FALSE
TRUE
_____________ are STRUCTURAL PROTEINS arranged in
fibers or sheets that have only one type of SECONDARY
STRUCTURE.
, A. FIBROUS PROTEINS
B. MICROFIBRIL PROTEINS
FIBROUS PROTEINS
The ________ are FIBROUS PROTEINS that form the covering
(hair, wool, nails, hooves, and fur) of most lan d animals.
A. ALPHA-KERATINS (α)
B. BETA-KERATINS (β)
ALPHA-KERATINS
The second common SECONDARY STRUCTURE in proteins
resembles the pleated folds of drapery and is known as the
________________
A. ALPHA-PLEATED SHEETS (α)
B. BETA-PLEATED SHEETS (β)
BETA-PLEATED SHEETS (β)
SOLUBLE PROTEINS are usually ________________
A. GLOBULAR PROTEINS
B. NON-GLOBULAR PROTEINS
GLOBULAR PROTEINS
GLOBULAR PROTEINS have 3-D structures called the
_______________
(McCarley SCUHS) Questions With Complete Solutions
______________ (OF A PROTEIN):
The linear sequence of AAs in a protein chain determined by the
genetic information fo the gene for each protein.
A. PRIMARY STRUCTURE
B. SECONDARY STRUCTURE
PRIMARY STRUCTURE
________________ (of a protein):
Folding of the PRIMARY STRUCTURE of a protein into an α-
helix or a β-pleated sheet; folding is maintained by
HYDROGEN BONDS between the AMIDE HYDROGEN and
the CARBONYL OXYGEN of the PEPTIDE BOND.
A. PRIMARY STRUCTURE
B. SECONDARY STRUCTURE
SECONDARY STRUCTURE
SECONDARY STRUCTURE (of a protein):
Folding of the PRIMARY STRUCTURE of a protein into an
α-helix or a β-pleated sheet; folding is maintained
by ______________ between the AMIDE HYDROGEN and
the CARBONYL OXYGEN of the PEPTIDE BOND.
A. HYDROGEN BONDS
,B. COVALENT BONDS
HYDROGEN BONDS
The most common form of a SECONDARY STRUCTURE is
a coiled, helical conformation known as
the ________________.
A. ALPHA-HELIX (α)
B. BETA-PLEATED SHEET (β)
ALPHA-HELIX
TRUE OR FALSE:
The HYDROGEN BONDS of the α-helix are PARALLEL to
the long axis of the helix
A. TRUE
B. FALSE
TRUE
TRUE OR FALSE:
The POLYPEPTIDE CHAIN of the α-helix is RIGHT-
handed.
A. TRUE
B. FALSE
TRUE
_____________ are STRUCTURAL PROTEINS arranged in
fibers or sheets that have only one type of SECONDARY
STRUCTURE.
, A. FIBROUS PROTEINS
B. MICROFIBRIL PROTEINS
FIBROUS PROTEINS
The ________ are FIBROUS PROTEINS that form the covering
(hair, wool, nails, hooves, and fur) of most lan d animals.
A. ALPHA-KERATINS (α)
B. BETA-KERATINS (β)
ALPHA-KERATINS
The second common SECONDARY STRUCTURE in proteins
resembles the pleated folds of drapery and is known as the
________________
A. ALPHA-PLEATED SHEETS (α)
B. BETA-PLEATED SHEETS (β)
BETA-PLEATED SHEETS (β)
SOLUBLE PROTEINS are usually ________________
A. GLOBULAR PROTEINS
B. NON-GLOBULAR PROTEINS
GLOBULAR PROTEINS
GLOBULAR PROTEINS have 3-D structures called the
_______________
