Question 1

The protein that transports oxygen in the blood is __________.

Accepted Answer

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

Question 2

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)    
D)  - CH?CH?CH?CH? $\begin{array} { l } 
+ \
\mathrm { N }
\end{array}$ H3 
E)

$\begin{array} { c } 
\mathrm { O } \
\mathrm { || } \
- \mathrm { CH } _ { 2 } { \mathrm { C } } \mathrm { NH } _ { 2 }
\end{array}$ 
A)  -CH?OH 
B)  - CH?COO- 
C)    
D)  - CH?CH?CH?CH? $\begin{array} { l } 
+ \
\mathrm { N }
\end{array}$ H3 
E)

$\begin{array} { c } 
\mathrm { O } \
\mathrm { || } \
- \mathrm { CH } _ { 2 } { \mathrm { C } } \mathrm { NH } _ { 2 }
\end{array}$

Question 3

Write the zwitterion of glycine.

Accepted Answer

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

Question 4

Lead ions disrupt hydrophobic interactions.

Accepted Answer

A) True 
 B)False

Question 5

Proteins that stimulate immune response are known as __________.

Accepted Answer

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

Question 6

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

Accepted Answer

A)  alanyl-cysteine 
B)  alanyl-serine 
C)  seryl-alanine 
D)  seryl-cysteine 
E)  serine-alanine 
A)  alanyl-cysteine 
B)  alanyl-serine 
C)  seryl-alanine 
D)  seryl-cysteine 
E)  serine-alanine

Question 7

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 bonds 
A)  disulfide bonds 
B)  salt bridges 
C)  hydrogen bonds 
D)  hydrophobic interactions 
E)  peptide bonds

Question 8

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

Question 9

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. 
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.

Question 10

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. 
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.

Question 11

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)  hormone 
A)  catalytic 
B)  structural 
C)  transport 
D)  storage 
E)  hormone

Question 12

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

Accepted Answer

A)  oxytocin 
B)  vasopressin 
C)  myoglobin 
D)  an endorphin 
E)  an enkephalin 
A)  oxytocin 
B)  vasopressin 
C)  myoglobin 
D)  an endorphin 
E)  an enkephalin

Question 13

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 structure 
A) tertiary 
B) quaternary 
C) primary structure 
D) secondary structure

Question 14

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

Question 15

Disulfide bonds stabilize the tertiary structure of a protein.

Accepted Answer

A) True 
 B)False

Question 16

One heavy metal that can cause denaturation of a protein is

Accepted Answer

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

Question 17

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 structure 
A) tertiary 
B) quaternary 
C) primary structure 
D) secondary structure

Question 18

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

Accepted Answer

A) hydrophobic 
B) both 
C) hydrophilic 
A) hydrophobic 
B) both 
C) hydrophilic

Question 19

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

Question 20

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

Exam 19: Amino Acids and Proteins

The protein that transports oxygen in the blood is __________.

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

Write the zwitterion of glycine.

Lead ions disrupt hydrophobic interactions.

Proteins that stimulate immune response are known as __________.

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

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

Within hemoglobin, the heme functions as

Acids and bases denature a protein by disrupting

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

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

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

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

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

Disulfide bonds stabilize the tertiary structure of a protein.

One heavy metal that can cause denaturation of a protein is

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

Classify each protein by function. - --

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

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

Chemistry and Measurements

Energy and Matter

Atoms and Elements

Nuclear Chemistry

Compounds and Their Bonds

Chemical Reactions and Quantities

Gases

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Introduction to Organic Chemistry: Alkanes

Alkenes, Alkynes, and Aromatic Compounds

Alcohols, Phenols, Thiols, and Ethers

Aldehydes, Ketones, and Chiral Molecules

Carbohydrates

Carboxylic Acids and Esters

Lipids

Amines and Amides

Enzymes and Vitamins

Nucleic Acids and Protein Synthesis

Metabolic Pathways for Carbohydrates

Metabolism and Energy Production

Metabolic Pathways for Lipids and Amino Acids

Filters

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