Question 1

What type of covalent bond is formed between amino acid molecules during protein synthesis?

Accepted Answer

A)  electrovalent bond
B)  amino bond
C)  peptide bond
D)  hydrogen bond
E)  primary bondF) B) and D)
G) A) and E)

Question 2

-Phospholipids are important components of the plasma membrane.What does "B" represent on the diagram?

Accepted Answer

A)  phosphorus
B)  oxygen
C)  nitrogen
D)  polar (hydrophilic) region
E)  nonpolar (hydrophobic) regionF) A) and D)
G) B) and E)

Question 3

Which of the following pairs is mismatched?

Accepted Answer

A)  hydrolysis - water is used in decomposition reaction
B)  synthesis reaction - two reactants combine to form a larger product
C)  decomposition reaction - large reactant broken into smaller products
D)  dehydration reaction - water is a product of the reaction
E)  oxidation - gain of electronsF) D) and E)
G) A) and D)

Question 4

Which of the following is the correct sequence from smallest to largest?

Accepted Answer

A)  amino acid,cell,protein,atom
B)  protein,cell,amino acid,atom
C)  amino acid,atom,cell,protein
D)  atom,amino acid,protein,cell
E)  cell,protein,amino acid,atomF) C) and E)
G) A) and B)

Question 5

Which of the following is a component of a nucleotide?

Accepted Answer

A)  adenine--a nitrogen base
B)  calcium ions
C)  cholesterol--a steroid
D)  ATP
E)  glucose--a monosaccharideF) B) and D)
G) C) and D)

Question 6

All of the synthesis reactions in the body are called

Accepted Answer

A)  oxidation-reduction.
B)  hydrolysis.
C)  dissociation.
D)  anabolism.
E)  catabolism.F) None of the above
G) A) and C)

Question 7

Proteins

Accepted Answer

A)  insulate and cushion the body.
B)  are the body's source of immediate energy.
C)  are the building blocks of nucleotides.
D)  contain the genetic information of the cell.
E)  provide much of the structure of body cells and tissues.F) D) and E)
G) A) and E)

Question 8

Normal blood pH is maintained within a range of

Accepted Answer

A)  6.5 - 9.5.
B)  4.5 - 5.5.
C)  1.0 - 14.0.
D)  7.35 - 7.45.
E)  7.35 - 8.5.F) All of the above
G) C) and D)

Question 9

Potential energy stored in bonds of molecules is _____ energy.

Accepted Answer

A)   mechanical
B)   thermal
C)   chemical
D)   molecular
E)   None of the aboveF) A) and B)
G) A) and C)

Question 10

-Water accounts for 50% of the weight of a young adult female and 60% of a young adult male.What kind of atom is found at "D"?

Accepted Answer

A)  oxygen atom
B)  water molecule
C)  polar covalent bond
D)  hydrogen atom
E)  hydrogen bondF) C) and E)
G) C) and D)

Question 11

All of the following terms relate to lipids.Which does not belong with the other four?

Accepted Answer

A)  steroid
B)  cholesterol
C)  estrogen
D)  bile salts
E)  triglycerideF) B) and C)
G) All of the above

Question 12

Phospholipids have a hydrophilic end which is

Accepted Answer

A)  polar and water-soluble.
B)  nonpolar and water-soluble.
C)  polar and water-insoluble.
D)  nonpolar and water -insoluble.E) B) and C)
F) B) and D)

Question 13

Which of the following factors will influence the rate of chemical reactions?

Accepted Answer

A)  temperature
B)  concentration of reactants
C)  presence of catalysts
D)  presence of enzymes
E)  All of these factors will influence the rate of chemical reactions.F) A) and C)
G) B) and E)

Question 14

Covalent bonds form when

Accepted Answer

A)  atomic nuclei fuse.
B)  electrons are shared between two atoms.
C)  neutrons are transferred from one atom to another.
D)  molecules become ionized.
E)  protons are lost from atoms.F) B) and D)
G) A) and E)

Question 15

Which of the following is the correct complementary strand to CATGTC?

Accepted Answer

A)  GUACAG
B)  TCGTAT
C)  CATGTC
D)  GTACAG
E)  AGCACAF) C) and D)
G) B) and C)

Question 16

Identify the material that would NOT be considered an important inorganic substances in our bodies.

Accepted Answer

A)   carbon
B)   iron
C)   calcium
D)   oxygenE) C) and D)
F) A) and B)

Question 17

A buffer will

Accepted Answer

A)  enhance changes in the pH of the solutions.
B)  make a solution more acidic.
C)  make a solution more basic.
D)  have no effect on the pH of the solutions.
E)  resist drastic changes in the pH of the solutions.F) A) and E)
G) A) and C)

Question 18

Which of the following is an organic compound?

Accepted Answer

A)  hydrochloric acid (HCl) 
B)  salt (NaCl) 
C)  sucrose (C12H22O11) 
D)  water (H2O) 
E)  None of these choices are correct.F) C) and D)
G) A) and C)

Question 19

-Phospholipids are important components of the plasma membrane.What does "D" represent on the diagram?

Accepted Answer

A)  phosphorus
B)  oxygen
C)  nitrogen
D)  polar (hydrophilic) region
E)  nonpolar (hydrophobic) regionF) A) and D)
G) B) and C)

Question 20

Solution A increases its acidity.This means that the

Accepted Answer

A)  pH of the solution has increased.
B)  number of hydrogen ions has increased.
C)  solution is closer to neutrality.
D)  solution will now accept more protons.
E)  number of hydrogen ions has decreased.F) D) and E)
G) None of the above

Exam 2: The Chemical Basis of Life

Normal blood pH is maintained within a range of

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Which of the following is an organic compound?

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Which of the following is a component of a nucleotide?

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Phospholipids have a hydrophilic end which is

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Proteins

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All of the synthesis reactions in the body are called

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Which of the following is the correct complementary strand to CATGTC?

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What type of covalent bond is formed between amino acid molecules during protein synthesis?

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Covalent bonds form when

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-Water accounts for 50% of the weight of a young adult female and 60% of a young adult male.What kind of atom is found at "D"?

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Which of the following is the correct sequence from smallest to largest?

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-Phospholipids are important components of the plasma membrane.What does "D" represent on the diagram?

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Potential energy stored in bonds of molecules is _____ energy.

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Which of the following factors will influence the rate of chemical reactions?

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All of the following terms relate to lipids.Which does not belong with the other four?

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Which of the following pairs is mismatched?

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Solution A increases its acidity.This means that the

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Identify the material that would NOT be considered an important inorganic substances in our bodies.

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-Phospholipids are important components of the plasma membrane.What does "B" represent on the diagram?

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A buffer will

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