Question 1

Upon hydrolysis the dipeptide abbreviated as Gly-Lys will yield the same products as the dipeptide abbreviated as Lys-Gly.

Accepted Answer

A) True 
 B)False

Question 2

What type of interaction would you expect between the following R groups in the tertiary structure of a protein?

Accepted Answer

A)   disulfide bonds
B)   salt bridges
C)   hydrogen bonds
D)   hydrophobic interactions
E)   peptide bondsF) All of the above
G) A) and B)

Question 3

One heavy metal that can cause denaturation of a protein is

Accepted Answer

A)   silver.
B)   sodium.
C)   barium.
D)   iron.
E)   calcium.F) A) and E)
G) B) and D)

Question 4

The structural formulas of amino acids are the same EXCEPT for the

Accepted Answer

A)   carboxyl group.
B)   alpha carbon.
C)   amino group.
D)   side (R)  group.
E)   hydrogen bonding.F) A) and C)
G) D) and E)

Question 5

Which R group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein?

Accepted Answer

A)   -CH?OH
B)   - CH?COO-
C)   3 
E)       \begin{array} { c }  \mathrm { O } \ \mathrm { || } \ - \mathrm { CH } _ { 2 } { \mathrm { C } } \mathrm { NH } _ { 2 } \end{array}" class="answers-bank-image d-inline" rel="preload" >
D)   - CH?CH?CH?CH?  +N\begin{array} { l } + \\mathrm { N }\end{array}+N​  H3
E)    O∣∣−CH2CNH2\begin{array} { c } \mathrm { O } \\mathrm { || } \- \mathrm { CH } _ { 2 } { \mathrm { C } } \mathrm { NH } _ { 2 }\end{array}O∣∣−CH2​CNH2​​F) B) and C)
G) D) and E)

Question 6

Disulfide bonds stabilize the tertiary structure of a protein.

Accepted Answer

A) True 
 B)False

Question 7

The protein that transports oxygen in the blood is __________.

Accepted Answer

The answer of The protein that transports oxygen in the...

Question 8

Consider the R groups of the following amino acids: cysteine: -CH₂SH; alanine: - 3CH3; serine: -CH₂OH
The name for the dipeptide shown below is __________. 3; serine: -CH₂OH The name for the dipeptide shown below is __________.   A)  alanyl-cysteine B)  alanyl-serine C)  seryl-alanine D)  seryl-cysteine E)  serine-alanine" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   alanyl-cysteine
B)   alanyl-serine
C)   seryl-alanine
D)   seryl-cysteine
E)   serine-alanineF) None of the above
G) A) and D)

Question 9

Classify each protein by function.
- −CH−CH3∣OH\begin{array} { l } - \mathrm { CH } - \mathrm { CH } _ { 3 } \\quad\mathrm { | } \\quad\mathrm { OH }\end{array}−CH−CH3​∣OH​

Accepted Answer

A)  hydrophobic
B)  both
C)  hydrophilic D) None of the above
E) B) and C)

Question 10

Proteins that stimulate immune response are known as __________.

Accepted Answer

The answer of Proteins that stimulate immune response are known...

Question 11

Lead ions disrupt hydrophobic interactions.

Accepted Answer

A) True 
 B)False

Question 12

Write the zwitterion of glycine.

Accepted Answer

The answer of Write the zwitterion of glycine....

Question 13

Within hemoglobin, the heme functions as

Accepted Answer

A)   a disulfide bridge.
B)   an oxygen carrier.
C)   a reducing agent.
D)   an α subunit.
E)   one of the four protein subunits.F) C) and D)
G) A) and C)

Question 14

Enkephalins, naturally produced opiates in the body, are found in

Accepted Answer

A)   muscles and bone tissue.
B)   brain and kidney tissue.
C)   thalamus and spinal cord tissue.
D)   heart and lung tissue.
E)   pancreas and liver tissue.F) A) and C)
G) None of the above

Question 15

Identify the structural level in each protein.
-The protein folds into a compact structure stabilized by interactions between R groups.

Accepted Answer

A)  tertiary
B)  quaternary
C)  primary structure
D)  secondary structureE) A) and B)
F) B) and D)

Question 16

Identify the structural level in each protein.
-the peptide bonds between the amino acids

Accepted Answer

A)  tertiary
B)  quaternary
C)  primary structure
D)  secondary structureE) C) and D)
F) All of the above

Question 17

Acids and bases denature a protein by disrupting

Accepted Answer

A)   peptide bonds and ionic bonds.
B)   amide bonds and alkene bonds
C)   hydrophobic interactions and peptide bonds.
D)   ionic bonds and hydrophobic interactions.
E)   ionic bonds and hydrogen bonds.F) None of the above
G) C) and E)

Question 18

Collagen, a protein found in tendons and cartilage, would be classified as a __________ protein.

Accepted Answer

A)   catalytic
B)   structural
C)   transport
D)   storage
E)   hormoneF) A) and D)
G) A) and E)

Question 19

The peptide hormone that regulates uterine contractions during labor is __________.

Accepted Answer

A)   oxytocin
B)   vasopressin
C)   myoglobin
D)   an endorphin
E)   an enkephalinF) All of the above
G) A) and B)

Question 20

Which of the following is an example of a secondary protein structure?

Accepted Answer

A)   dipeptide
B)   triglyceride
C)   a helix
D)   amino acid
E)   fatty acidF) A) and E)
G) B) and C)

Exam 19: Amino Acids and Proteins

Classify each protein by function. - −CH−CH3∣OH\begin{array} { l } - \mathrm { CH } - \mathrm { CH } _ { 3 } \\\quad\mathrm { | } \\\quad\mathrm { OH }\end{array}−CH−CH3​∣OH​

Correct AnswerverifiedShow Answer

Disulfide bonds stabilize the tertiary structure of a protein.

Correct AnswerverifiedShow Answer

Upon hydrolysis the dipeptide abbreviated as Gly-Lys will yield the same products as the dipeptide abbreviated as Lys-Gly.

Correct AnswerverifiedShow Answer

Collagen, a protein found in tendons and cartilage, would be classified as a __________ protein.

Correct AnswerverifiedShow Answer

One heavy metal that can cause denaturation of a protein is

Correct AnswerverifiedShow Answer

Lead ions disrupt hydrophobic interactions.

Correct AnswerverifiedShow Answer

Proteins that stimulate immune response are known as __________.

Correct AnswerverifiedShow Answer

Identify the structural level in each protein. -The protein folds into a compact structure stabilized by interactions between R groups.

Correct AnswerverifiedShow Answer

Write the zwitterion of glycine.

Correct AnswerverifiedShow Answer

What type of interaction would you expect between the following R groups in the tertiary structure of a protein?

Correct AnswerverifiedShow Answer

The structural formulas of amino acids are the same EXCEPT for the

Correct AnswerverifiedShow Answer

Consider the R groups of the following amino acids: cysteine: -CH₂SH; alanine: - 3CH3; serine: -CH₂OH The name for the dipeptide shown below is __________.

Correct AnswerverifiedShow Answer

Which of the following is an example of a secondary protein structure?

Correct AnswerverifiedShow Answer

The peptide hormone that regulates uterine contractions during labor is __________.

Correct AnswerverifiedShow Answer

Acids and bases denature a protein by disrupting

Correct AnswerverifiedShow Answer

The protein that transports oxygen in the blood is __________.

Correct AnswerverifiedShow Answer

Identify the structural level in each protein. -the peptide bonds between the amino acids

Correct AnswerverifiedShow Answer

Enkephalins, naturally produced opiates in the body, are found in

Correct AnswerverifiedShow Answer

Which R group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein?

Correct AnswerverifiedShow Answer

Within hemoglobin, the heme functions as

Correct AnswerverifiedShow Answer

Classify each protein by function. - $\begin{array} { l } - \mathrm { CH } - \mathrm { CH } _ { 3 } \\\quad\mathrm { | } \\\quad\mathrm { OH }\end{array}$

Correct Answer
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Consider the R groups of the following amino acids: cysteine: -CH₂SH; alanine: - 3CH₃; serine: -CH₂OH The name for the dipeptide shown below is __________.

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