Question 1

The breakdown of glycogen (an energy-storage compound)  is an example of a(n)  reaction.

Accepted Answer

A)  exergonic
B)  endergonic
C)  exchange
D)  synthesis
E)  equilibriumF) All of the above
G) A) and D)

Question 2

A drastic conformational change in proteins in response to conditions such as extreme heat or pH will lead to loss of a protein's function.This drastic change in three-dimensional shape is called

Accepted Answer

A)  contamination.
B)  denaturation.
C)  saturation.
D)  sedimentation.
E)  deconformation.F) A) and B)
G) C) and D) B

Question 3

Enzymes are specific to substrates because of the shape of their

Accepted Answer

A)  active sites.
B)  receptors.
C)  secondary structure.
D)  terminal amino acids.
E)  alpha chain.F) D) and E)
G) A) and E)

Question 4

When you jump off a high diving board into water, you notice great resistance of water.This resistance is called and is caused by water's great .

Accepted Answer

A)  surface tension; adhesiveness
B)  surface tension; cohesiveness
C)  hydrophobic tension; adhesiveness
D)  hydrophilic tension; cohesiveness
E)  hydrophilic tension; adhesivenessF) None of the above
G) B) and C)

Question 5

Ionic bonds break apart in water more easily than covalent bonds do.

Accepted Answer

A) True 
 B)False

Question 6

account for 98.5% of the body's weight.

Accepted Answer

A)  Carbon, oxygen, hydrogen, sodium, potassium, and chlorine
B)  Carbon, oxygen, iron, sodium, potassium, and chlorine
C)  Carbon, nitrogen, hydrogen, sodium, potassium, and chlorine
D)  Carbon, oxygen, hydrogen, nitrogen, sodium, and potassium
E)  Carbon, oxygen, hydrogen, nitrogen, calcium, and phosphorusF) B) and D)
G) B) and E)

Question 7

Digestive enzymes breakdown the starch in a potato into thousands of glucose molecules.This exemplifies a(n)  reaction.

Accepted Answer

A)  synthesis
B)  decomposition
C)  exchange
D)  anabolic
E)  reductiveF) C) and E)
G) B) and D)

Question 8

The chemical properties of an atom are determined by its

Accepted Answer

A)  protons.
B)  electrons.
C)  neutrons.
D)  protons and neutrons.
E)  particles.F) B) and D)
G) A) and B) B

Question 9

Which of these is the most appropriate to express number of molecules per volume?

Accepted Answer

A)  molarity
B)  volume
C)  percentage
D)  weight per volume
E)  milliequivalents per literF) All of the above
G) None of the above

Question 10

The folding and coiling of proteins into globular and fibrous shapes determines the structure of the protein.

Accepted Answer

A)  primary
B)  secondary
C)  tertiary
D)  quaternary
E)  denaturedF) A) and C)
G) B) and E)

Question 11

Molecules composed of two or more atoms are called compounds.

Accepted Answer

A) True 
 B)False

Question 12

Nucleic acids are of .

Accepted Answer

A)  molecules; monosaccharides
B)  monomers; ATP
C)  polymers; nucleotides
D)  polymers; cAMP
E)  polymers; DNAF) B) and C)
G) B) and D)

Question 13

Which of the following equations depicts an exchange reaction?

Accepted Answer

A)  AB → A + B
B)  A + B → AB
C)  AB + CD → AC + BD
D)  AB → A- + B+
E)  A + B → AB → C + DF) A) and D)
G) None of the above

Question 14

What type of bond attracts one water molecule to another?

Accepted Answer

A)  an ionic bond
B)  a peptide bond
C)  a hydrogen bond
D)  a covalent bond
E)  a hydrolytic bondF) All of the above
G) B) and C) C

Question 15

Which of the following is a disaccharide?

Accepted Answer

A)  galactose
B)  lactose
C)  glucose
D)  fructose
E)  amyloseF) A) and B)
G) B) and D)

Question 16

All enzymes are , but not all of those are enzymes.

Accepted Answer

A)  cofactors
B)  proteins
C)  lipids
D)  carbohydrates
E)  nucleic acidsF) C) and D)
G) A) and B)

Question 17

Proteins are built from different amino acids.

Accepted Answer

A)  monomers; 10
B)  molecules; 10
C)  polymers; 20
D)  macromolecules; 40
E)  polypeptides; 80F) A) and E)
G) B) and C)

Question 18

The bonding properties of an atom are determined by its

Accepted Answer

A)  electrons.
B)  protons.
C)  positrons.
D)  neutrons.
E)  photons.F) B) and D)
G) C) and D)

Question 19

All amino acids have both a carboxyl group and an amino group attached to a central carbon.

Accepted Answer

A) True 
 B)False

Question 20

The formula for an amino group is whereas the formula of a carboxyl group is

Accepted Answer

A)  -COOH; -OH.
B)  -CH3; -NH₂.
C)  -OH; -SH.
D)  -NH₂; -COOH.
E)  -SH; -H₂PO4.F) D) and E)
G) A) and B)

Exam 2: The Chemistry of Life

The breakdown of glycogen (an energy-storage compound) is an example of a(n) reaction.

Correct AnswerverifiedShow Answer

A drastic conformational change in proteins in response to conditions such as extreme heat or pH will lead to loss of a protein's function.This drastic change in three-dimensional shape is called

Correct AnswerverifiedB

Enzymes are specific to substrates because of the shape of their

Correct AnswerverifiedShow Answer

When you jump off a high diving board into water, you notice great resistance of water.This resistance is called and is caused by water's great .

Correct AnswerverifiedShow Answer

Ionic bonds break apart in water more easily than covalent bonds do.

Correct AnswerverifiedShow Answer

account for 98.5% of the body's weight.

Correct AnswerverifiedShow Answer

Digestive enzymes breakdown the starch in a potato into thousands of glucose molecules.This exemplifies a(n) reaction.

Correct AnswerverifiedShow Answer

The chemical properties of an atom are determined by its

Correct AnswerverifiedB

Which of these is the most appropriate to express number of molecules per volume?

Correct AnswerverifiedShow Answer

The folding and coiling of proteins into globular and fibrous shapes determines the structure of the protein.

Correct AnswerverifiedShow Answer

Molecules composed of two or more atoms are called compounds.

Correct AnswerverifiedShow Answer

Nucleic acids are of .

Correct AnswerverifiedShow Answer

Which of the following equations depicts an exchange reaction?

Correct AnswerverifiedShow Answer

What type of bond attracts one water molecule to another?

Correct AnswerverifiedC

Which of the following is a disaccharide?

Correct AnswerverifiedShow Answer

All enzymes are , but not all of those are enzymes.

Correct AnswerverifiedShow Answer

Proteins are built from different amino acids.

Correct AnswerverifiedShow Answer

The bonding properties of an atom are determined by its

Correct AnswerverifiedShow Answer

All amino acids have both a carboxyl group and an amino group attached to a central carbon.

Correct AnswerverifiedShow Answer

The formula for an amino group is whereas the formula of a carboxyl group is

Correct AnswerverifiedShow Answer

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B

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B

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C

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