Question 1

Which of the following amino acids has iodine atoms in its structure?

Accepted Answer

A)  leucine 
B)  lysine 
C)  thyroxine 
D)  tyrosine 
A)  leucine 
B)  lysine 
C)  thyroxine 
D)  tyrosine

Question 2

How many different types of protein chains make up hemoglobin?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 3

Why is 70% ethanol rather than 95% ethanol used in sterilizing skin before injections?

Accepted Answer

A)  70% ethanol kills bacteria by denaturing their surface proteins. 
B)  70% ethanol kills bacteria by penetrating them and coagulating their proteins. 
C)  Special precautions must be taken when using 95% ethanol. 
D)  None of the above is correct. 
A)  70% ethanol kills bacteria by denaturing their surface proteins. 
B)  70% ethanol kills bacteria by penetrating them and coagulating their proteins. 
C)  Special precautions must be taken when using 95% ethanol. 
D)  None of the above is correct.

Question 4

Which of the following contributes to the tertiary structure of proteins?

Accepted Answer

A)  the sequence of amino acids 
B)  hydrogen bonding within the backbone 
C)  hydrogen bonding between the side chains 
D)  the interaction of protein subunits 
A)  the sequence of amino acids 
B)  hydrogen bonding within the backbone 
C)  hydrogen bonding between the side chains 
D)  the interaction of protein subunits

Question 5

What is the approximate pI of most amino acids?

Accepted Answer

A)  3 
B)  6 
C)  7 
D)  10 
A)  3 
B)  6 
C)  7 
D)  10

Question 6

Which of the following contains a disulfide bond?

Accepted Answer

A)  alanine 
B)  cysteine 
C)  cystine 
D)  methionine 
A)  alanine 
B)  cysteine 
C)  cystine 
D)  methionine

Question 7

What type of chemical reaction is involved in the formation of cystine from cysteine?

Accepted Answer

A)  addition 
B)  reduction 
C)  oxidation 
D)  substitution 
A)  addition 
B)  reduction 
C)  oxidation 
D)  substitution

Question 8

How many different tripeptides can be made from glycine and valine?

Accepted Answer

A)  4 
B)  6 
C)  8 
D)  12 
A)  4 
B)  6 
C)  8 
D)  12

Which of the following amino acids has iodine atoms in its structure?

How many different types of protein chains make up hemoglobin?

Why is 70% ethanol rather than 95% ethanol used in sterilizing skin before injections?

Which of the following contributes to the tertiary structure of proteins?

What is the approximate pI of most amino acids?

Which of the following contains a disulfide bond?

What type of chemical reaction is involved in the formation of cystine from cysteine?

How many different tripeptides can be made from glycine and valine?

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 and Alkynes

Benzene and Its Derivatives

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

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Exam 22: Proteins

Which of the following amino acids has iodine atoms in its structure?

How many different types of protein chains make up hemoglobin?

Why is 70% ethanol rather than 95% ethanol used in sterilizing skin before injections?

Which of the following contributes to the tertiary structure of proteins?

What is the approximate pI of most amino acids?

Which of the following contains a disulfide bond?

What type of chemical reaction is involved in the formation of cystine from cysteine?

How many different tripeptides can be made from glycine and valine?

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 and Alkynes

Benzene and Its Derivatives

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