Question 1

Which of the following proteins stimulates the formation of red blood cells in the body?

Accepted Answer

A)  fibrinogen 
B)  collagen 
C)  casein 
D)  erythropoietin 
A)  fibrinogen 
B)  collagen 
C)  casein 
D)  erythropoietin

Question 2

At which pH does a protein have the lowest solubility?

Accepted Answer

A)  at a very low pH 
B)  at a neutral pH of 7 
C)  at a very high pH 
D)  at its isoelectric point 
A)  at a very low pH 
B)  at a neutral pH of 7 
C)  at a very high pH 
D)  at its isoelectric point

Question 3

Which of the following amino acids contains nitrogen in its side chain?

Accepted Answer

A)  cysteine 
B)  glycine 
C)  proline 
D)  leucine 
A)  cysteine 
B)  glycine 
C)  proline 
D)  leucine

Question 4

Which of the following defines the quaternary structure of proteins?

Accepted Answer

A)  It is the sequence of amino acids in proteins. 
B)  It refers to repetitive conformations of the protein backbone. 
C)  It is the overall 3-D conformation of a polypeptide chain and the interactions of the side chains. 
D)  It is the interaction between the subunits of a protein that has more than one polypeptide chain. 
A)  It is the sequence of amino acids in proteins. 
B)  It refers to repetitive conformations of the protein backbone. 
C)  It is the overall 3-D conformation of a polypeptide chain and the interactions of the side chains. 
D)  It is the interaction between the subunits of a protein that has more than one polypeptide chain.

Question 5

What are the basic structural units of proteins?

Accepted Answer

A)  amino acids 
B)  monosaccharides 
C)  triglycerides 
D)  fatty acids 
A)  amino acids 
B)  monosaccharides 
C)  triglycerides 
D)  fatty acids

Question 6

How many amino acids are present in human insulin, which is a hormone that regulates blood glucose?

Accepted Answer

A)  51 
B)  104 
C)  30 
D)  21 
A)  51 
B)  104 
C)  30 
D)  21

Question 7

Which of the following amino acid side chains is hydrophobic?

Accepted Answer

A)  acidic 
B)  basic 
C)  polar but neutral 
D)  none of these 
A)  acidic 
B)  basic 
C)  polar but neutral 
D)  none of these

Question 8

What is an apoprotein?

Accepted Answer

A)  the prosthetic part of a protein 
B)  a polypeptide chain with a prosthetic group 
C)  a polypeptide chain without a prosthetic group 
D)  all of these 
A)  the prosthetic part of a protein 
B)  a polypeptide chain with a prosthetic group 
C)  a polypeptide chain without a prosthetic group 
D)  all of these

Which of the following proteins stimulates the formation of red blood cells in the body?

At which pH does a protein have the lowest solubility?

Which of the following amino acids contains nitrogen in its side chain?

Which of the following defines the quaternary structure of proteins?

What are the basic structural units of proteins?

How many amino acids are present in human insulin, which is a hormone that regulates blood glucose?

Which of the following amino acid side chains is hydrophobic?

What is an apoprotein?

Matter, Energy, and Measurement

Atoms

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

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Alkenes, Alkynes, and Aromatic Compounds

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

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Exam 21: Proteins

Which of the following proteins stimulates the formation of red blood cells in the body?

At which pH does a protein have the lowest solubility?

Which of the following amino acids contains nitrogen in its side chain?

Which of the following defines the quaternary structure of proteins?

What are the basic structural units of proteins?

How many amino acids are present in human insulin, which is a hormone that regulates blood glucose?

Which of the following amino acid side chains is hydrophobic?

What is an apoprotein?

Matter, Energy, and Measurement

Atoms

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alkenes, Alkynes, and Aromatic Compounds

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters