Question 1

In a dehydration reaction, ________. In order for this to occur water is ________.

Accepted Answer

A)   monomers are joined to become a polymer; removed
B)   polymers are broken up to form monomers; added
C)   monomers are broken up to form polymers; added
D)   polymers are joined to form monomers; removed
E)   polymers are broken up to form monomers; removedF) A) and D)
G) None of the above

Question 2

Why are saturated triglycerides considered 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) A) and B)
G) All of the above

Question 3

DNA functions to ________________________ while RNA's function is to_____________________.

Accepted Answer

A)   Store the information to make a new organism; contain the information to make a new cell.
B)   Store information to produce gametes; contain the information to make a protein.
C)   Store information to produce proteins; contain the information to make a DNA.
D)   Store the information to make RNA; contain the information to make a protein.
E)   Store information to produce a new cell; contain the information to make a gamete.F) A) and E)
G) A) and D)

Question 4

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) B) and D)
G) A) and B)

Question 5

ATP is a molecule used for energy transport inside the cell the components of it are a nitrogen containing base, a pentose sugar and three phosphate groups. Given this structure it is a(n)

Accepted Answer

A)   amino acid.
B)   carbohydrate.
C)   lipid.
D)   nucleic acid.
E)   protein.F) B) and E)
G) A) and E)

Question 6

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) None of the above
G) All of the above

Question 7

A starch molecule is to glucose as

Accepted Answer

A)   a protein is to a polypeptide.
B)   DNA is to an amino acid.
C)   a lipid is to nucleic acid.
D)   a protein is to an amino acid.
E)   fatty acid is to a fat.F) C) and D)
G) C) and E)

Question 8

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 reactionF) B) and E)
G) None of the above

Question 9

In which of the following is the correct monomer matched with its polymer?

Accepted Answer

A)   fatty acid - DNA
B)   monosaccharide - lipid
C)   glycerol - carbohydrate
D)   amino acid - protein
E)   nucleotide - carbohydrateF) A) and B)
G) All of the above

Question 10

Deoxyribose is a sugar found in ________.

Accepted Answer

A)   glucose
B)   enzymes
C)   DNA
D)   glycogen
E)   proteinF) A) and C)
G) C) and D)

Question 11

The principle role for sugars in living things is

Accepted Answer

A)   to form cell membranes.
B)   to serve as a form of energy storage.
C)   to create our genetic code.
D)   for creating energy.
E)   to produce hormones.F) C) and E)
G) A) and E)

Question 12

When a person orders a hamburger with lettuce, tomato, and mayonnaise on it, which of the following would be a FALSE statement about the nutritional intake?

Accepted Answer

A)   Amino acids can be obtained from the hamburger patty.
B)   Glycogen will be obtained from the bun.
C)   Fat will be consumed from the mayonnaise.
D)   Cellulose will be consumed from the lettuce.
E)   Carbohydrates will be obtained from the tomatoF) A) and B)
G) A) and C)

Question 13

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

Accepted Answer

A)   fats
B)   steroids
C)   glycogen
D)   hospholipids
E)   lipidsF) A) and B)
G) A) and C)

Question 14

Which formula is a hydrocarbon?

Accepted Answer

A)   CO­2
B)   CH4
C)   NaCl
D)   CaCl2
E)   H2OF) B) and E)
G) None of the above

Question 15

Which functional group is seen in amino acids?

Accepted Answer

A)   PO4
B)   -OH
C)   -NH2
D)   -C=OH
E)   -C-HF) A) and B)
G) A) and C)

Question 16

Amino acids are seen in ______ as _______ are needed to create DNA.

Accepted Answer

A)   protein; nucleotide
B)   fatty acid; hydroxides
C)   polysaccharide; carboxyl
D)   RNA; glucose
E)   fats; sugarsF) A) and B)
G) D) and E)

Question 17

Select the INCORRECT association.

Accepted Answer

A)   glucose….monosaccharide
B)   cellulose….building block for cell walls in plants
C)   sucrose….table sugar
D)   fructose….a polysaccharide
E)   Starch….a long chain of glucoseF) D) and E)
G) A) and C)

Question 18

Which of the following is an organic molecule?

Accepted Answer

A)   CO2
B)   H2CO3
C)   Na2CO3
D)   MnCO3
E)   CaCO3F) A) and E)
G) None of the above

Question 19

When you eat a salad, which one of the following components will pass through the body with the least digestion?

Accepted Answer

A)   dressing
B)   croutons
C)   lettuce
D)   egg
E)   bacon bitsF) A) and E)
G) A) and D)

Question 20

The term "functional" is used in the phrase "functional group" because it describes a group of atoms

Accepted Answer

A)   that are organic.
B)   that make the entire molecule hydrophobic.
C)   that prevent interaction with other molecules.
D)   that react a certain way with other molecules.
E)   that make the entire molecule hydrophilic.F) B) and D)
G) All of the above

Exam 3: The Organic Molecules of Life

In a dehydration reaction, ________. In order for this to occur water is ________.

Correct AnswerverifiedShow Answer

Which functional group is seen in amino acids?

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Amino acids are seen in ______ as _______ are needed to create DNA.

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What does a peptide bond do?

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In which of the following is the correct monomer matched with its polymer?

Correct AnswerverifiedShow Answer

Which formula is a hydrocarbon?

Correct AnswerverifiedShow Answer

The term "functional" is used in the phrase "functional group" because it describes a group of atoms

Correct AnswerverifiedShow Answer

Why are saturated triglycerides considered less healthy than unsaturated ones?

Correct AnswerverifiedShow Answer

A starch molecule is to glucose as

Correct AnswerverifiedShow Answer

Deoxyribose is a sugar found in ________.

Correct AnswerverifiedShow Answer

The principle role for sugars in living things is

Correct AnswerverifiedShow Answer

When a person orders a hamburger with lettuce, tomato, and mayonnaise on it, which of the following would be a FALSE statement about the nutritional intake?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is an organic molecule?

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Select the INCORRECT association.

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

Correct AnswerverifiedShow Answer

ATP is a molecule used for energy transport inside the cell the components of it are a nitrogen containing base, a pentose sugar and three phosphate groups. Given this structure it is a(n)

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

When you eat a salad, which one of the following components will pass through the body with the least digestion?

Correct AnswerverifiedShow Answer

DNA functions to ________________________ while RNA's function is to_____________________.

Correct AnswerverifiedShow Answer

In a dehydration reaction, . In order for this to occur water is .

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Amino acids are seen in as _ are needed to create DNA.

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DNA functions to ____ while RNA's function is to_.

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