Question 1

An example of an inorganic molecule is

Accepted Answer

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

Question 2

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 3

Which of the following could be a fat?

Accepted Answer

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

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

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 6

Which of the following is most likely a regulatory molecule?

Accepted Answer

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

Question 7

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 8

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 9

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 10

Storage of energy is a MAJOR function of

Accepted Answer

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

Question 11

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.

Question 12

____ represent isomers.

Accepted Answer

A)   
B)   
C)   
D)

Question 13

In a nucleotide, the nitrogenous base is bonded to

Accepted Answer

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

Question 14

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 15

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 16

A(n)  ____ is a polymer.

Accepted Answer

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

Question 17

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 18

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 19

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 20

Molecules that do not dissolve in water very easily are characteristically

Accepted Answer

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

Exam 3: Organic Molecules: The Molecules of Life

An example of an inorganic molecule is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedD

Which of the following could be a fat?

Correct AnswerverifiedShow Answer

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

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

Correct AnswerverifiedShow Answer

Which of the following is a function of proteins?

Correct AnswerverifiedShow Answer

Storage of energy is a MAJOR function of

Correct AnswerverifiedShow Answer

What role do chaperone proteins play?

Correct AnswerverifiedShow Answer

____ represent isomers.

Correct AnswerverifiedShow Answer

In a nucleotide, the nitrogenous base is bonded to

Correct AnswerverifiedShow Answer

Saturated fats differ from unsaturated fats in that saturated fats

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A(n) ____ is a polymer.

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 rows correctly matches organic molecules with their subunits?

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Organic molecules always

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Molecules that do not dissolve in water very easily are characteristically

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D

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C

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

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B