Question 1

Which of the following is a function of proteins?

Accepted Answer

A)   Contain information for the cell.
B)   Serve as a subunit in the structure of fat.
C)   Reduce the weight of an individual.
D)   Speed up certain chemical reactions.

Question 2

An example of an inorganic molecule is

Accepted Answer

A)   CaCl2.
B)   C2H6.
C)   C2H5OH.
D)   C3H5(OH) 3.

Question 3

Molecules that do not dissolve in water very easily are characteristically

Accepted Answer

A)   acids.
B)   fats.
C)   vitamins.
D)   carbohydrates. B

Question 4

A fatty acid having double bonds between carbon atoms is a(n)

Accepted Answer

A)   phospholipid.
B)   animal fat.
C)   unsaturated fat.
D)   saturated fat.

Question 5

glycerol + 3 fatty acids  →\rightarrow→ triglyceride + 3 H2O This is a(n)  ____ reaction.

Accepted Answer

A)   hydrolysis
B)   dehydration synthesis
C)   unbalanced
D)   acid-base

Question 6

In a nucleotide, the nitrogenous base is bonded to

Accepted Answer

A)   an acid.
B)   a sugar.
C)   a phosphate.
D)   itself.

Question 7

When four polypeptides are joined together by covalent bonds, they form a new, biologically active molecule that displays ____________ structure.

Accepted Answer

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

Question 8

Saturated fats differ from unsaturated fats in that saturated fats

Accepted Answer

A)   are longer.
B)   lack carbon-carbon double bonds.
C)   have fewer double bonds.
D)   cannot be used for an energy source.

Question 9

A(n)  ____ is a polymer.

Accepted Answer

A)   monosaccharide
B)   amino acid
C)   nucleotide
D)   polypeptide

Question 10

____ represent isomers.

Accepted Answer

A)   
B)   
C)   
D)

Question 11

Storage of energy is a MAJOR function of

Accepted Answer

A)   protein.
B)   fats.
C)   steroids.
D)   nucleic acids.

Question 12

Which of these is a copy of DNA that is used to direct the synthesis of a specific protein?

Accepted Answer

A)   mRNA
B)   rRNA
C)   tRNA
D)   ribosome

Question 13

Organic molecules always

Accepted Answer

A)   contain carbon.
B)   contain carbon, hydrogen, and oxygen respectively in a 1:2:1 ratio.
C)   are produced by living organisms.
D)   dissolve in water.

Question 14

So if I really want to know the details about my chances of arteriosclerosis I should be paying closest attention to my

Accepted Answer

A)   total amount of serum cholesterol.
B)   RNA.
C)   relative amounts of HDLs and LDLs.
D)   total amount of VLDLs.

Question 15

Which of the following could be a fat?

Accepted Answer

A)   C2H5OH
B)   C6H12O6
C)   C2H5NO2
D)   C51H97O6

Question 16

Which of the following statements about carbohydrates is INCORRECT?

Accepted Answer

A)   Carbohydrates are a good source of energy.
B)   Carbohydrates contain approximately 2 hydrogens per carbon in the molecule.
C)   Most carbohydrates dissolve in water.
D)   Carbohydrates contain argon, carbon, hydrogen, and oxygen atoms.

Question 17

Which of the following is most likely a regulatory molecule?

Accepted Answer

A)   hair
B)   muscle protein
C)   steroid
D)   calcium C

Question 18

Which of these is responsible for carrying a specific amino acid to the ribosome during protein synthesis?

Accepted Answer

A)   DNA
B)   mRNA
C)   tRNA
D)   ribosome

Question 19

Which of the following rows correctly matches organic molecules with their subunits?

Accepted Answer

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

Question 20

What role do chaperone proteins play?

Accepted Answer

A)   They make sure that nucleotides are in the right position.
B)   Make sure that proteins are folded correctly.
C)   Are caps on lipids.
D)   Control the movement of water throughout the cell.

Exam 3: Organic Molecules: The Molecules of Life

Which of the following is a function of proteins?

Correct AnswerverifiedShow Answer

An example of an inorganic molecule is

Correct AnswerverifiedShow Answer

Molecules that do not dissolve in water very easily are characteristically

Correct AnswerverifiedB

A fatty acid having double bonds between carbon atoms is a(n)

Correct AnswerverifiedShow Answer

glycerol + 3 fatty acids →\rightarrow→ triglyceride + 3 H2O This is a(n) ____ reaction.

Correct AnswerverifiedShow Answer

In a nucleotide, the nitrogenous base is bonded to

Correct AnswerverifiedShow Answer

When four polypeptides are joined together by covalent bonds, they form a new, biologically active molecule that displays ____________ structure.

Correct AnswerverifiedD

Saturated fats differ from unsaturated fats in that saturated fats

Correct AnswerverifiedShow Answer

A(n) ____ is a polymer.

Correct AnswerverifiedShow Answer

____ represent isomers.

Correct AnswerverifiedShow Answer

Storage of energy is a MAJOR function of

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Which of these is a copy of DNA that is used to direct the synthesis of a specific protein?

Correct AnswerverifiedShow Answer

Organic molecules always

Correct AnswerverifiedShow Answer

So if I really want to know the details about my chances of arteriosclerosis I should be paying closest attention to my

Correct AnswerverifiedShow Answer

Which of the following could be a fat?

Correct AnswerverifiedShow Answer

Which of the following statements about carbohydrates is INCORRECT?

Correct AnswerverifiedShow Answer

Which of the following is most likely a regulatory molecule?

Correct AnswerverifiedC

Which of these is responsible for carrying a specific amino acid to the ribosome during protein synthesis?

Correct AnswerverifiedShow Answer

Which of the following rows correctly matches organic molecules with their subunits?

Correct AnswerverifiedShow Answer

What role do chaperone proteins play?

Correct AnswerverifiedShow Answer

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B

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glycerol + 3 fatty acids $\rightarrow$ triglyceride + 3 H₂O This is a(n) ____ reaction.

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D

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C

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