Question 1

During protein synthesis, _____ RNA is made to be a copy of a gene from the DNA.

Accepted Answer

The answer of During protein synthesis, _____ RNA is made...

Question 2

Which is not true about enzymes?

Accepted Answer

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

Question 3

An amino acid contains all of the following except:

Accepted Answer

A)  an amino grou.
B)  a carboxyl group
C)  a variable R group
D)  a carbon atom
E)  a nitrogenous baseF) C) and D)
G) A) and E) E

Question 4

The type of chemical bond linking amino acids together is a(n) :

Accepted Answer

A)  glycosidic bond
B)  peptide bond
C)  ester bond
D)  ionic bond
E)  hydrogen bondF) A) and D)
G) A) and C)

Question 5

Polar molecules have more reactivity compared to nonpolar molecules.

Accepted Answer

A) True 
 B)False

Question 6

Which term does not belong in this list?

Accepted Answer

A)  lactic acid
B)  vinegar
C)  hydrogen ion donor
D)  pH 8
E)  acidicF) B) and C)
G) A) and B)

Question 7

What is the maximum number of electrons in the second energy shell of an atom?

Accepted Answer

A)  2
B)  4
C)  8
D)  18
E)  32F) All of the above
G) B) and D)

Question 8

The neutrons of an atom are

Accepted Answer

A)  always equal to the number of protons in an atom.
B)  found in the nucleus.
C)  used to determine atomic number.
D)  positively charged.
E)  moving in pathways called orbitals.F) A) and E)
G) None of the above

Question 9

The building blocks of an enzyme are

Accepted Answer

A)  nucleotides.
B)  glycerol and fatty acids.
C)  monosaccharides.
D)  phosphate, glycerol, fatty acids.
E)  amino acids.F) A) and B)
G) A) and E)

Question 10

The polynucleotide strands of DNA are linked along their length by __________ bonds between the bases.

Accepted Answer

A)  covalent
B)  ionic
C)  Van der Waals
D)  double
E)  hydrogenF) A) and B)
G) All of the above

Question 11

The subatomic particles that surround the nucleus are the

Accepted Answer

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

Question 12

Which of the following represents a synthesis reaction?

Accepted Answer

A)  AB  →\rarr→  A + B
B)  A + B  →\rarr→  AB
C)  AB + XY  →\rarr→  AX + BY
D)  AB + XY  ↔\leftrightarrow↔  AX + BY
E)  None of the choices are correct. F) None of the above
G) C) and E)

Question 13

All of the following are monosaccharides except

Accepted Answer

A)  glucose.
B)  glycogen.
C)  fructose.
D)  ribose.
E)  deoxyribose.F) None of the above
G) A) and B)

Question 14

Which amino acid contains sulfur atoms that form covalent disulfide bonds in its tertiary structure?

Accepted Answer

A)  valine
B)  cysteine
C)  serine
D)  alanine
E)  tyrosineF) B) and E)
G) None of the above B

Question 15

Reactions involving electron release are called ______ reactions.

Accepted Answer

A)  oxidation.
B)  reduction.
C)  ionization.
D)  decomposition.
E)  dissolution.F) C) and D)
G) A) and B)

Question 16

Cations are

Accepted Answer

A)  charged subatomic particles.
B)  atoms that have gained electrons.
C)  radioactive isotopes.
D)  capable of forming ionic bonds with anions.
E)  atoms without protons.F) B) and C)
G) C) and D)

Question 17

What part of a phospholipid forms hydrophobic tails?

Accepted Answer

A)  fatty acids
B)  glycerol
C)  phosphate
D)  alcohol
E)  All of the choices are correct.F) A) and D)
G) B) and E)

Question 18

Polar molecules are composed of covalently bonded

Accepted Answer

A)  identical atoms.
B)  carbon atoms.
C)  ions.
D)  atoms of different electronegativity.
E)  atoms of identical electronegativity.F) B) and E)
G) C) and D)

Question 19

Two or more atoms bonded together are called a/an

Accepted Answer

A)  ion.
B)  isotope.
C)  element.
D)  electrolyte.
E)  molecule.F) A) and D)
G) B) and E)

Question 20

Elements have predictable chemical properties.

Accepted Answer

A) True 
 B)False

Exam 2: The Chemistry of Biology

During protein synthesis, _____ RNA is made to be a copy of a gene from the DNA.

Correct AnswerverifiedShow Answer

Which is not true about enzymes?

Correct AnswerverifiedE

An amino acid contains all of the following except:

Correct AnswerverifiedE

The type of chemical bond linking amino acids together is a(n) :

Correct AnswerverifiedShow Answer

Polar molecules have more reactivity compared to nonpolar molecules.

Correct AnswerverifiedShow Answer

Which term does not belong in this list?

Correct AnswerverifiedShow Answer

What is the maximum number of electrons in the second energy shell of an atom?

Correct AnswerverifiedShow Answer

The neutrons of an atom are

Correct AnswerverifiedShow Answer

The building blocks of an enzyme are

Correct AnswerverifiedShow Answer

The polynucleotide strands of DNA are linked along their length by __________ bonds between the bases.

Correct AnswerverifiedShow Answer

The subatomic particles that surround the nucleus are the

Correct AnswerverifiedShow Answer

Which of the following represents a synthesis reaction?

Correct AnswerverifiedShow Answer

All of the following are monosaccharides except

Correct AnswerverifiedShow Answer

Which amino acid contains sulfur atoms that form covalent disulfide bonds in its tertiary structure?

Correct AnswerverifiedB

Reactions involving electron release are called ______ reactions.

Correct AnswerverifiedShow Answer

Cations are

Correct AnswerverifiedShow Answer

What part of a phospholipid forms hydrophobic tails?

Correct AnswerverifiedShow Answer

Polar molecules are composed of covalently bonded

Correct AnswerverifiedShow Answer

Two or more atoms bonded together are called a/an

Correct AnswerverifiedShow Answer

Elements have predictable chemical properties.

Correct AnswerverifiedShow Answer

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E

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E

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B

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