Question 1

Atherosclerosis is associated with

Accepted Answer

A)   fats with no double bonds.
B)   fats with double bonds.
C)   phospholipids.
D)   polyunsaturated fats.
E)   long protein chains.F) A) and B)
G) None of the above

Question 2

Humans store their polysaccharides in the form of

Accepted Answer

A)   lactose.
B)   starch.
C)   glycogen.
D)   glucose.
E)   cellulose.F) A) and D)
G) D) and E)

Question 3

Which functional group acts as an acid when placed in solution?

Accepted Answer

A)   -OH
B)   -NH2
C)   -SH
D)   -COOH
E)   -PO4F) C) and D)
G) B) and E)

Question 4

Which of the following is in correct order from smallest to largest?

Accepted Answer

A)   protein - amino acid - polypeptide
B)   amino acid - polypeptide - peptide
C)   peptide - polypeptide - protein
D)   protein - glycerol - amino acid
E)   disaccharide - polysaccharide - monosaccharideF) C) and E)
G) D) and E)

Question 5

Which functional group is found in proteins and makes their three-dimensional structure more stable?

Accepted Answer

A)   -OH
B)   -NH2
C)   -SH
D)   -COOH
E)   -PO4F) A) and B)
G) D) and E)

Question 6

Which word does NOT belong with the others?

Accepted Answer

A)   muscle
B)   antibodies
C)   sucrose
D)   enzymes
E)   hairF) B) and E)
G) A) and C)

Question 7

A fat is formed when three fatty acids join a glycerol by a

Accepted Answer

A)   hydrolysis reaction.
B)   dehydration reaction.
C)   polymeric reaction.
D)   digestive reaction.
E)   evaporation reaction.F) A) and B)
G) B) and D)

Question 8

Which of the following would describe a polypeptide?

Accepted Answer

A)   fatty acids joined to glycerol by hydrolysis reactions
B)   glucose molecules joined by dehydration synthesis reactions
C)   nucleotides broken by hydrolysis reactions
D)   amino acids joined by dehydration synthesis reactions
E)   a repeated sequence of carbon and hydrogen atomsF) A) and D)
G) C) and D)

Question 9

Which of the following words does NOT belong with the others?

Accepted Answer

A)   fats
B)   steroids
C)   glycogen
D)   phospholipids
E)   lipidsF) All of the above
G) A) and D)

Question 10

A gene in DNA is the code for

Accepted Answer

A)   a sequence of amino acids.
B)   a sequence of glucose molecules.
C)   a sequence of fatty acids used in a fat.
D)   a sequence of sugars.
E)   a sequence of functional groups.F) A) and C)
G) None of the above

Question 11

What category of biological molecules are steroids included in?

Accepted Answer

A)   proteins
B)   lipids
C)   carbohydrates
D)   nucleic acidsE) A) and B)
F) A) and C)

Question 12

Which of the following would probably not be affected when a protein is denatured?

Accepted Answer

A)   primary structure
B)   secondary structure
C)   tertiary structure
D)   quaternary structure
E)   the folded shape of the proteinF) A) and B)
G) C) and E)

Question 13

What makes saturated triglycerides considerably less healthy than unsaturated ones?

Accepted Answer

A)   They are solids at room temperature.
B)   They possess no double bonds between carbon atoms making them more tightly packed together.
C)   Individuals tend to consume more saturated fats than unsaturated fats.
D)   Unsaturated fats are found in processed foods more frequently.
E)   They are digested more quickly by the body.F) C) and E)
G) A) and E)

Question 14

Which of the following is NOT a dehydration synthesis reaction?

Accepted Answer

A)   amino acids forming proteins
B)   glycogen forming glucose molecules
C)   nucleotides forming DNA
D)   glucose units forming starch
E)   fatty acids and glycerol forming a fatF) A) and E)
G) B) and E)

Question 15

Plants store their sugar in the form of

Accepted Answer

A)   protein.
B)   glycogen.
C)   cellulose.
D)   starch.
E)   glucose.F) C) and D)
G) All of the above

Question 16

Of the following,which is a feature that proteins and polysaccharides share?

Accepted Answer

A)   They are made of repeated monomer units.
B)   They are both made from fatty acids.
C)   They both contain glucose.
D)   They are both long chains of repeated nucleotide units.
E)   They both contain nitrogen.F) B) and C)
G) D) and E)

Question 17

What does a peptide bond do?

Accepted Answer

A)   joins a sodium atom to a chloride atom
B)   helps hold one water molecule to an adjacent one
C)   links oxygen to hydrogen atoms
D)   joins an amino acid to an adjacent amino acid
E)   joins nucleotide bases to one anotherF) A) and C)
G) A) and E)

Question 18

The following figure represents which process?

Accepted Answer

A)   dehydration synthesis
B)   denaturation
C)   polyunsaturation
D)   hydrolysis
E)   combustionF) A) and C)
G) C) and D)

Question 19

Deoxyribose is a sugar found in

Accepted Answer

A)   glucose.
B)   enzymes.
C)   DNA.
D)   glycogen.
E)   protein.F) C) and D)
G) A) and B)

Question 20

In addition to carbon an organic molecule must contain

Accepted Answer

A)   nitrogen.
B)   oxygen.
C)   hydrogen.
D)   sulfur.
E)   phosphorous.F) B) and E)
G) A) and B)

Exam 3: The Organic Molecules of Life

Atherosclerosis is associated with

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In addition to carbon an organic molecule must contain

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Which functional group is found in proteins and makes their three-dimensional structure more stable?

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Which of the following words does NOT belong with the others?

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What does a peptide bond do?

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Which of the following would describe a polypeptide?

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What makes saturated triglycerides considerably less healthy than unsaturated ones?

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Which of the following is in correct order from smallest to largest?

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A gene in DNA is the code for

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Deoxyribose is a sugar found in

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The following figure represents which process?

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Which word does NOT belong with the others?

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Humans store their polysaccharides in the form of

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A fat is formed when three fatty acids join a glycerol by a

Correct AnswerverifiedShow Answer

Which of the following is NOT a dehydration synthesis reaction?

Correct AnswerverifiedShow Answer

Plants store their sugar in the form of

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What category of biological molecules are steroids included in?

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Of the following,which is a feature that proteins and polysaccharides share?

Correct AnswerverifiedShow Answer

Which of the following would probably not be affected when a protein is denatured?

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Which functional group acts as an acid when placed in solution?

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