Question 1

An amino acid contains all of the following except a/n ______.

Accepted Answer

A)  phosphate
B)   α\alphaα  carbon
C)  carboxyl group
D)  variable R group
E)  amino group F) None of the above
G) D) and E)

Question 2

If solution A has a lower pH compared to solution B, then solution A is more acidic than solutionB.

Accepted Answer

A) True 
 B)False

Question 3

Two or more atoms bonded together are called a(n)  ______.

Accepted Answer

A)  molecule
B)  isotope
C)  ion
D)  electrolyte
E)  elementF) B) and E)
G) A) and C)

Question 4

Compared to a solution of pH 9, a solution of pH 7

Accepted Answer

A)  is more basic.
B)  has more H+ ions.
C)  has a higher pH.
D)  has no OH- ions.E) B) and C)
F) C) and D)

Question 5

Ionic compounds

Accepted Answer

A)  are basic in solution.
B)  are acidic in solution.
C)  are hydrophobic.
D)  are hydrophilic.
E)  always form salts in solution.F) B) and D)
G) C) and D)

Question 6

Ionic bonds

Accepted Answer

A)  result from like charge attraction.
B)  result from transferring electrons.
C)  are the weakest chemical bonds.
D)  always involve carbon.
E)  result from sharing electrons.F) C) and D)
G) A) and B)

Question 7

Which of the following would have glycosidic bonds?

Accepted Answer

A)  Monosaccharides
B)  Polypeptides
C)  Triglycerides
D)  ATP
E)  PolysaccharidesF) A) and E)
G) B) and C)

Question 8

Which of the following is not a pyrimidine?

Accepted Answer

A)  Adenine
B)  Thymine
C)  Cytosine
D)  UracilE) B) and D)
F) All of the above

Question 9

Protons and neutrons make up the atom's central core, which is referred to as its ______.

Accepted Answer

A)  isotope
B)  center of gravity
C)  valence number
D)  nucleusE) B) and C)
F) A) and B)

Question 10

In the cell cytoplasm, molecules of ATP are a ______.

Accepted Answer

A)  solute
B)  solventC) A) and B)
D) undefined

Question 11

Which of the following represents a synthesis reaction?

Accepted Answer

A)  AB  →\rarr→ A + B
B)  A + B  →\rarr→  AB
C)  AB + XY  →\rarr→  AY + XB
D)  AB + XY  ↔\leftrightarrow↔  AY + XB E) A) and B)
F) A) and C)

Question 12

Atoms that gain or lose electrons become charged particles called ______.

Accepted Answer

A)  ions
B)  isotopes
C)  anions
D)  cationsE) B) and C)
F) A) and D)

Question 13

Anything that occupies space and has mass is called ______.

Accepted Answer

A)  matter
B)  energy
C)  living
D)  space
E)  atomicF) A) and B)
G) C) and D)

Question 14

The important solvent associated with living things is ______.

Accepted Answer

A)  benzene
B)  sodium chloride
C)  water
D)  carbon dioxide
E)  ethyl alcoholF) C) and D)
G) B) and C)

Question 15

The electrons of an atom are

Accepted Answer

A)  used to determine the atomic weight.
B)  always equal to the number of protons.
C)  carrying a positive charge.
D)  always in full orbitals.
E)  used to determine the atomic number.F) A) and E)
G) B) and D)

Question 16

Which of the following is not true about enzymes?

Accepted Answer

A)  Enzymes are found in all cells.
B)  Enzymes can be denaturated by heat and other agents.
C)  Enzymes participate in the cell's chemical reactions.
D)  Enzymes have high-energy bonds between phosphates.
E)  Enzymes are catalysts.F) B) and E)
G) A) and E)

Question 17

Select the statement that most accurately reflects the process of plant material digestion in humans.

Accepted Answer

A)  It requires the action of enzymes called kinases.
B)  It is linked to the digestion of glycogen.
C)  It is a process that is dependent upon enzyme (cellulase)  production by gut microbiota.
D)  It is a very efficient process the produces very little undigested material in feces.E) None of the above
F) All of the above

Question 18

All of the following are lipids except ______.

Accepted Answer

A)  wax
B)  cholesterol
C)  phospholipid
D)  starch
E)  triglycerideF) A) and B)
G) None of the above

Question 19

One technique for staining bacteria for viewing under the microscope is called the Gram stain.In this technique, alcohol is used as a decolorizer because it degrades the outer membrane found in some bacteria.What chemical component of the cell does alcohol affect?

Accepted Answer

A)  Protein
B)  Lipid
C)  Nucleic acids
D)  CarbohydrateE) C) and D)
F) B) and D)

Question 20

Polar molecules have more reactivity compared to nonpolar molecules.

Accepted Answer

A) True 
 B)False

Exam 2: The Chemistry of Biology

Which of the following represents a synthesis reaction?

Correct AnswerverifiedShow Answer

The important solvent associated with living things is ______.

Correct AnswerverifiedShow Answer

Ionic compounds

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Two or more atoms bonded together are called a(n) ______.

Correct AnswerverifiedShow Answer

Protons and neutrons make up the atom's central core, which is referred to as its ______.

Correct AnswerverifiedShow Answer

In the cell cytoplasm, molecules of ATP are a ______.

Correct AnswerverifiedShow Answer

Anything that occupies space and has mass is called ______.

Correct AnswerverifiedShow Answer

Atoms that gain or lose electrons become charged particles called ______.

Correct AnswerverifiedShow Answer

Ionic bonds

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Polar molecules have more reactivity compared to nonpolar molecules.

Correct AnswerverifiedShow Answer

Which of the following would have glycosidic bonds?

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If solution A has a lower pH compared to solution B, then solution A is more acidic than solutionB.

Correct AnswerverifiedShow Answer

Select the statement that most accurately reflects the process of plant material digestion in humans.

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Which of the following is not a pyrimidine?

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Compared to a solution of pH 9, a solution of pH 7

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Which of the following is not true about enzymes?

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All of the following are lipids except ______.

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One technique for staining bacteria for viewing under the microscope is called the Gram stain.In this technique, alcohol is used as a decolorizer because it degrades the outer membrane found in some bacteria.What chemical component of the cell does alcohol affect?

Correct AnswerverifiedShow Answer

The electrons of an atom are

Correct AnswerverifiedShow Answer

An amino acid contains all of the following except a/n ______.

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