Question 1

Which of the following describes a lipid?

Accepted Answer

A) A group of molecules that contain both a carboxylic acid and amine functional group. 
B) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
C) A group of small organic molecules that are insoluble in water. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A molecule that contains C, H, and N and exhibits Brønsted base behavior 
A) A group of molecules that contain both a carboxylic acid and amine functional group. 
B) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
C) A group of small organic molecules that are insoluble in water. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A molecule that contains C, H, and N and exhibits Brønsted base behavior C

Question 2

Which of these elements is not found in proteins?

Accepted Answer

A) S 
B) P 
C) C 
D) O 
E) N 
A) S 
B) P 
C) C 
D) O 
E) N B

Question 3

Which of the following describes a fat?

Accepted Answer

A) A group of molecules that contain both a carboxylic acid and amine functional group. 
B) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
C) A group of small organic molecules that are insoluble in water. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A tri-ester of glycerol where each of the hydroxyl-group hydrogen atoms in glycerol has been replaced by the alkyl group of a relatively long hydrocarbon chain carboxylic acid. 
A) A group of molecules that contain both a carboxylic acid and amine functional group. 
B) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
C) A group of small organic molecules that are insoluble in water. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A tri-ester of glycerol where each of the hydroxyl-group hydrogen atoms in glycerol has been replaced by the alkyl group of a relatively long hydrocarbon chain carboxylic acid. E

Question 4

Which of the following describes a triglyceride?

Accepted Answer

A) A molecules composed of three small sugar molecules. 
B) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
C) A group of small organic molecules that are insoluble in water. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A tri-ester of glycerol where each of the hydroxyl-group hydrogen atoms in glycerol has been replaced by the alkyl group of a relatively long hydrocarbon chain carboxylic acid. 
A) A molecules composed of three small sugar molecules. 
B) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
C) A group of small organic molecules that are insoluble in water. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A tri-ester of glycerol where each of the hydroxyl-group hydrogen atoms in glycerol has been replaced by the alkyl group of a relatively long hydrocarbon chain carboxylic acid.

Question 5

The backbone of a strand of nucleic acid consists of

Accepted Answer

A) phosphate units only. 
B) phosphate and sugar units. 
C) polyester. 
D) phosphate, sugar, and nitrogen base units. 
E) sugar units only. 
A) phosphate units only. 
B) phosphate and sugar units. 
C) polyester. 
D) phosphate, sugar, and nitrogen base units. 
E) sugar units only.

Question 6

An amino acid is a compound that contains at least

Accepted Answer

A) one amino group and one amide group. 
B) two amino groups and one carboxylic acid group. 
C) one hydroxyl group and one methyl group. 
D) one carboxylic acid group and one amino group. 
E) one methyl group and one amide group. 
A) one amino group and one amide group. 
B) two amino groups and one carboxylic acid group. 
C) one hydroxyl group and one methyl group. 
D) one carboxylic acid group and one amino group. 
E) one methyl group and one amide group.

Question 7

Which of the structures below corresponds to the dipeptide serylalanine? Note the following structures:

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 8

Which of the following refers to a primary structure?

Accepted Answer

A) The shape the protein chain adopts as the result of hydrogen bonding. 
B) The sequence of amino acids that make up a protein chain. 
C) The folding of a protein into a characteristic shape. 
D) The shape formed by two or more folded protein chains coming together. 
E) None of the above. 
A) The shape the protein chain adopts as the result of hydrogen bonding. 
B) The sequence of amino acids that make up a protein chain. 
C) The folding of a protein into a characteristic shape. 
D) The shape formed by two or more folded protein chains coming together. 
E) None of the above.

Question 9

Which of the following describes a phospholipid?

Accepted Answer

A) A molecules composed of three small sugar molecules. 
B) A diglyceride with an organic phosphate group in place of one of the fatty acids. 
C) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A tri-ester of glycerol where each of the hydroxyl-group hydrogen atoms in glycerol has been replaced by the alkyl group of a relatively long hydrocarbon chain carboxylic acid. 
A) A molecules composed of three small sugar molecules. 
B) A diglyceride with an organic phosphate group in place of one of the fatty acids. 
C) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A tri-ester of glycerol where each of the hydroxyl-group hydrogen atoms in glycerol has been replaced by the alkyl group of a relatively long hydrocarbon chain carboxylic acid.

Question 10

A peptide bond (also called an amide bond) joins two amino acids together.What atoms are linked by this bond?

Accepted Answer

A) C - O 
B) C - H 
C) C - N 
D) N - S 
E) S - C 
A) C - O 
B) C - H 
C) C - N 
D) N - S 
E) S - C

Question 11

Which of the following is a steroid?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 12

Which of the following is not a carbohydrate?

Accepted Answer

A) C6H12O6 
B) C5H10O5 
C) C10H18O9 
D) C6H14O6 
E) C12H22O11 
A) C6H12O6 
B) C5H10O5 
C) C10H18O9 
D) C6H14O6 
E) C12H22O11

Question 13

Which of the structures below corresponds to the dipeptide alanylserine?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 14

The breaking apart of a dissacharide into its monosaccharide components involves the addition of a water molecule and is called _______.

Accepted Answer

A) condensation 
B) peptide linkage 
C) secondary structure 
D) hydrolysis 
E) transport 
A) condensation 
B) peptide linkage 
C) secondary structure 
D) hydrolysis 
E) transport

Question 15

Which of the following describes a steroid?

Accepted Answer

A) A group of molecules that have a special grouping of 5- and 6-member rings in common. 
B) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
C) A large biological polymer composed of amino acids. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A group of molecules that make up a lipid bilayer. 
A) A group of molecules that have a special grouping of 5- and 6-member rings in common. 
B) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
C) A large biological polymer composed of amino acids. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A group of molecules that make up a lipid bilayer.

Question 16

Which of the following describes a protein?

Accepted Answer

A) A molecules composed of three small sugar molecules. 
B) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
C) A large biological polymer composed of amino acids. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A tri-ester of glycerol where each of the hydroxyl-group hydrogen atoms in glycerol has been replaced by the alkyl group of a relatively long hydrocarbon chain carboxylic acid. 
A) A molecules composed of three small sugar molecules. 
B) A relatively small, water-soluble molecule that contains either a ketone or an aldehyde functional group. 
C) A large biological polymer composed of amino acids. 
D) And ester of phosphoric acid where one or more of the ionizable hydrogen atoms has been replaced by an R group. 
E) A tri-ester of glycerol where each of the hydroxyl-group hydrogen atoms in glycerol has been replaced by the alkyl group of a relatively long hydrocarbon chain carboxylic acid.

Question 17

Which of the following is a fatty acid?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 18

Which of the following refers to a secondary structure?

Accepted Answer

A) The shape the protein chain adopts as the result of hydrogen bonding. 
B) The sequence of amino acids that make up a protein chain. 
C) The folding of a protein into a characteristic shape. 
D) The shape formed by two or more folded protein chains coming together. 
E) None of the above. 
A) The shape the protein chain adopts as the result of hydrogen bonding. 
B) The sequence of amino acids that make up a protein chain. 
C) The folding of a protein into a characteristic shape. 
D) The shape formed by two or more folded protein chains coming together. 
E) None of the above.

Question 19

Which of the following is not a protein?

Accepted Answer

A) hormones, such as oxytocin 
B) structural substances, such as keratin 
C) antibodies, such as immunoglobulin 
D) transport facilitators, such as hemoglobin 
E) saturated triglycerides, such as triolein 
A) hormones, such as oxytocin 
B) structural substances, such as keratin 
C) antibodies, such as immunoglobulin 
D) transport facilitators, such as hemoglobin 
E) saturated triglycerides, such as triolein

Question 20

Phosphorus is an essential mineral element.It is an important atom in which one of the following?

Accepted Answer

A) Amino acids 
B) Proteins 
C) Polyethylene 
D) Nylon 
E) DNA 
A) Amino acids 
B) Proteins 
C) Polyethylene 
D) Nylon 
E) DNA

Which of the following describes a lipid?

Which of these elements is not found in proteins?

Which of the following describes a fat?

Which of the following describes a triglyceride?

The backbone of a strand of nucleic acid consists of

An amino acid is a compound that contains at least

Which of the structures below corresponds to the dipeptide serylalanine? Note the following structures:

Which of the following refers to a primary structure?

Which of the following describes a phospholipid?

A peptide bond (also called an amide bond) joins two amino acids together.What atoms are linked by this bond?

Which of the following is a steroid?

Which of the following is not a carbohydrate?

Which of the structures below corresponds to the dipeptide alanylserine?

The breaking apart of a dissacharide into its monosaccharide components involves the addition of a water molecule and is called _______.

Which of the following describes a steroid?

Which of the following describes a protein?

Which of the following is a fatty acid?

Which of the following refers to a secondary structure?

Which of the following is not a protein?

Phosphorus is an essential mineral element.It is an important atom in which one of the following?

Atoms and Elements

Electrons and the Periodic Table

Compounds and Chemical Bonds

How Chemists Use Numbers

The Mole and Chemical Formulas

Molecular Shape

Solids, Liquids, and Phase Changes

Gases

Physical Properties of Solutions

Chemical Reactions and Chemical Equations

Using Balanced Chemical Equations

Acids and Bases

Equilibrium

Organic Chemistry

Nuclear Chemistry

Electrochemistry

Filters

Exam 15: Biochemistry

Which of the following describes a lipid?

Which of these elements is not found in proteins?

Which of the following describes a fat?

Which of the following describes a triglyceride?

The backbone of a strand of nucleic acid consists of

An amino acid is a compound that contains at least

Which of the structures below corresponds to the dipeptide serylalanine? Note the following structures:

Which of the following refers to a primary structure?

Which of the following describes a phospholipid?

A peptide bond (also called an amide bond) joins two amino acids together.What atoms are linked by this bond?

Which of the following is a steroid?

Which of the following is not a carbohydrate?

Which of the structures below corresponds to the dipeptide alanylserine?

The breaking apart of a dissacharide into its monosaccharide components involves the addition of a water molecule and is called _______.

Which of the following describes a steroid?

Which of the following describes a protein?

Which of the following is a fatty acid?

Which of the following refers to a secondary structure?

Which of the following is not a protein?

Phosphorus is an essential mineral element.It is an important atom in which one of the following?

Atoms and Elements

Electrons and the Periodic Table

Compounds and Chemical Bonds

How Chemists Use Numbers

The Mole and Chemical Formulas

Molecular Shape

Solids, Liquids, and Phase Changes

Gases

Physical Properties of Solutions

Chemical Reactions and Chemical Equations

Using Balanced Chemical Equations

Acids and Bases

Equilibrium

Organic Chemistry

Nuclear Chemistry

Electrochemistry

Filters