Question 1

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.

Question 2

The electrons of an atom are

Accepted Answer

A)   moving in pathways called orbitals.
B)   used to determine atomic number.
C)   positively charged.
D)   always equal to the number of neutrons in an atom.
E)   found in the nucleus.

Question 3

Purines and pyrimidines are components in the building block units of all ______.

Accepted Answer

A)   amino acids
B)   polysaccharides
C)   carbohydrates
D)   enzymes
E)   nucleic acids

Question 4

Which of the following would have glycosidic bonds?

Accepted Answer

A)   Monosaccharides
B)   Polypeptides
C)   Triglycerides
D)   ATP
E)   Polysaccharides

Question 5

What type of bond is formed by dehydration synthesis between two amino acids?

Accepted Answer

A)   Ester
B)   Peptide
C)   Phosphate
D)   Disulfide
E)   Glycosidic

Question 6

ATP is best described as

Accepted Answer

A)   a double helix.
B)   the energy molecule of cells.
C)   an electron carrier.
D)   an enzyme.

Question 7

An atom has gained an electron; it has been ______.

Accepted Answer

A)   ionized
B)   oxidized
C)   neutralized
D)   reduced
E)   deionized

Question 8

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)   nucleus

Question 9

Polar molecules have more reactivity compared to nonpolar molecules.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following represents a reversible reaction?

Accepted Answer

A)   A + B  →\rarr→  AB
B)   AB  →\rarr→  A + B
C)   AB + XY  ↔\harr↔  AY + XB
D)   AB + XY  →\rarr→  AY + XB

Question 11

The only part of an amino acid that differs from other amino acids is its R group.

Accepted Answer

A) True 
 B)False

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→  AY + XB
D)   AB + XY  ↔\harr↔  AY + XB

Question 13

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

Accepted Answer

A)   molecule
B)   isotope
C)   ion
D)   electrolyte
E)   element

Question 14

The subatomic particles that surround the nucleus are the ______.

Accepted Answer

A)   protons and neutrons
B)   neutrons
C)   electrons
D)   protons
E)   protons and electrons

Question 15

An example of an amphipathic molecule found in living cells is ______.

Accepted Answer

A)   phospholipid
B)   nucleic acid
C)   protein
D)   ATP
E)   glucose

Question 16

Which pertains to DNA but not to RNA?

Accepted Answer

A)   Contains ribose
B)   Contains nucleotides
C)   Contains thymine
D)   Contains adenine
E)   Contains uracil

Question 17

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)   Carbohydrate

Exam 2: The Chemistry of Biology

Which of the following represents a reversible reaction?

Correct Answer
verified

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 Answer
verified

Ionic bonds

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

Correct Answer
verified

What type of bond is formed by dehydration synthesis between two amino acids?

Correct Answer
verified

Which pertains to DNA but not to RNA?

Correct Answer
verified

Which of the following represents a synthesis reaction?

Correct Answer
verified

An example of an amphipathic molecule found in living cells is ______.

Correct Answer
verified

The electrons of an atom are

Correct Answer
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Polar molecules have more reactivity compared to nonpolar molecules.

Correct Answer
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Purines and pyrimidines are components in the building block units of all ______.

Correct Answer
verified

An atom has gained an electron; it has been ______.

Correct Answer
verified

Which of the following would have glycosidic bonds?

Correct Answer
verified

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

Correct Answer
verified

ATP is best described as

Correct Answer
verified

The subatomic particles that surround the nucleus are the ______.

Correct Answer
verified

The only part of an amino acid that differs from other amino acids is its R group.

Correct Answer
verified

Exam 2: The Chemistry of Biology

Which of the following represents a reversible reaction?

Correct AnswerverifiedShow Answer

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

Ionic bonds

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What type of bond is formed by dehydration synthesis between two amino acids?

Correct AnswerverifiedShow Answer

Which pertains to DNA but not to RNA?

Correct AnswerverifiedShow Answer

Which of the following represents a synthesis reaction?

Correct AnswerverifiedShow Answer

An example of an amphipathic molecule found in living cells is ______.

Correct AnswerverifiedShow Answer

The electrons of an atom are

Correct AnswerverifiedShow Answer

Polar molecules have more reactivity compared to nonpolar molecules.

Correct AnswerverifiedShow Answer

Purines and pyrimidines are components in the building block units of all ______.

Correct AnswerverifiedShow Answer

An atom has gained an electron; it has been ______.

Correct AnswerverifiedShow Answer

Which of the following would have glycosidic bonds?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

ATP is best described as

Correct AnswerverifiedShow Answer

The subatomic particles that surround the nucleus are the ______.

Correct AnswerverifiedShow Answer

The only part of an amino acid that differs from other amino acids is its R group.

Correct AnswerverifiedShow Answer

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