Question 1

The monomer of a nucleic acid is called a (nucleoside/nucleotide/base).

Accepted Answer

The answer of The monomer of a nucleic acid is...

Question 2

Which of the following is a property of water?

Accepted Answer

A)   it has a high capacity for heat.
B)   it is not a common reactant in metabolic reactions.
C)   It is not a good solvent.
D)   it is liquid in a very narrow temperature range.
E)   it is a nonpolar molecule.

Question 3

Describe the chemical properties of phospholipids that account for their behavior in water.

Accepted Answer

Phospholipids have polar phosphate "head...

Question 4

Consider the structure of thymine, shown on the left in Figure 2.3 above, and compare to the structure of pyrimidine X on the right. What would be the impact if X is incorporated into the structure of a DNA strand in place of thymine?

Accepted Answer

Where thymine has a nonpolar group, pyri...

Question 5

An atom or molecule becomes a(n) (anion/ion/cation) when it loses an electron to a more electronegative molecule.

Accepted Answer

The answer of An atom or molecule becomes a(n) (anion/ion/cation)...

Question 6

The type(s)  of bond(s)  produced when atoms with somewhat different electronegativities share electrons is/are

Accepted Answer

A)   a nonpolar covalent bond.
B)   a polar covalent bond.
C)   an ionic bond.
D)   a hydrogen bond.
E)   both nonpolar covalent and ionic bonds.

Question 7

An acid dissociates in water to release

Accepted Answer

A)   hydrogen ion(s) .
B)   cation(s) .
C)   hydroxyl group(s) .
D)   anion(s) .
E)   both anions and hydrogen ions.

Question 8

Which of the following is an example of a polysaccharide?

Accepted Answer

A)   glycogen
B)   glucose
C)   fructose
D)   deoxyribose
E)   sucrose

Question 9

Which of the following would NOT normally be found as a component of a cell's nucleic acids?

Accepted Answer

A)   adenine deoxyribonucleotides
B)   thymine deoxyribonucleotides
C)   uracil deoxyribonucleotides
D)   cytosine ribonucleotides
E)   adenine ribonucleotides

Question 10

Proteins contain both acidic and basic R groups and can, therefore, function as

Accepted Answer

A)   energy storage macromolecules.
B)   structural macromolecules.
C)   buffers.
D)   catalysts.
E)   genetic material.

Question 11

Organisms use carbohydrates in all of the following ways EXCEPT

Accepted Answer

A)   as a component of cell walls.
B)   as a long-term energy source.
C)   as a short-term energy source.
D)   to keep membranes flexible at low temperatures.
E)   as a building block of DNA and RNA molecules.

Question 12

Which of the following is found in nucleic acids?

Accepted Answer

A)   amines
B)   carboxylic acid
C)   purines
D)   glycerol
E)   R group

Question 13

Nucleic acids, proteins, and complex carbohydrates are all produced by

Accepted Answer

A)   hydrolytic reactions.
B)   dehydration synthesis.
C)   exchange reactions.
D)   hydrogen bonding.
E)   catabolic reactions.

Question 14

Unstable isotopes can be useful

Accepted Answer

A)   catalysts.
B)   in medical diagnosis.
C)   in vitamins.
D)   in the formation of hydrogen bonds.
E)   as buffers.

Question 15

The folding of a polypeptide into a three-dimensional shape is its (secondary/tertiary/quaternary) structure.

Accepted Answer

The answer of The folding of a polypeptide into a...

Question 16

The chemical formula of the oxygen we require is O₂. It is

Accepted Answer

A)   a compound.
B)   an isotope.
C)   an element.
D)   a molecule.
E)   both an element and a molecule.

Question 17

DNA is composed of repeating units of sugars, phosphates, and nucleic acids. This is an example of a

Accepted Answer

A)   polymer.
B)   monomer.
C)   salt.
D)   micelle.
E)   lipid.

Question 18

The electron shells of atoms hold eight electrons each.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is an incorrect pairing?

Accepted Answer

A)   electrolytes; anions
B)   synthesis; endothermic
C)   hydrolysis; hydrogen bonds
D)   catabolism; exothermic
E)   dehydration; anabolism

Question 20

Which of the following is an atomic particle that has no electrical charge?

Accepted Answer

A)   electron
B)   neutron
C)   element
D)   proton
E)   isotope

Exam 2: The Chemistry of Microbiology

The chemical formula of the oxygen we require is O₂. It is

Correct AnswerverifiedShow Answer

Unstable isotopes can be useful

Correct AnswerverifiedShow Answer

Which of the following would NOT normally be found as a component of a cell's nucleic acids?

Correct AnswerverifiedShow Answer

Which of the following is found in nucleic acids?

Correct AnswerverifiedShow Answer

Nucleic acids, proteins, and complex carbohydrates are all produced by

Correct AnswerverifiedShow Answer

The type(s) of bond(s) produced when atoms with somewhat different electronegativities share electrons is/are

Correct AnswerverifiedShow Answer

Proteins contain both acidic and basic R groups and can, therefore, function as

Correct AnswerverifiedShow Answer

Which of the following is an atomic particle that has no electrical charge?

Correct AnswerverifiedShow Answer

Which of the following is an incorrect pairing?

Correct AnswerverifiedShow Answer

Consider the structure of thymine, shown on the left in Figure 2.3 above, and compare to the structure of pyrimidine X on the right. What would be the impact if X is incorporated into the structure of a DNA strand in place of thymine?

Correct AnswerverifiedWhere thymine has a nonpolar group, pyri...View AnswerShow Answer

An atom or molecule becomes a(n) (anion/ion/cation) when it loses an electron to a more electronegative molecule.

Correct AnswerverifiedShow Answer

DNA is composed of repeating units of sugars, phosphates, and nucleic acids. This is an example of a

Correct AnswerverifiedShow Answer

Which of the following is an example of a polysaccharide?

Correct AnswerverifiedShow Answer

The monomer of a nucleic acid is called a (nucleoside/nucleotide/base).

Correct AnswerverifiedShow Answer

The electron shells of atoms hold eight electrons each.

Correct AnswerverifiedShow Answer

Which of the following is a property of water?

Correct AnswerverifiedShow Answer

Describe the chemical properties of phospholipids that account for their behavior in water.

Correct AnswerverifiedPhospholipids have polar phosphate "head...View AnswerShow Answer

The folding of a polypeptide into a three-dimensional shape is its (secondary/tertiary/quaternary) structure.

Correct AnswerverifiedShow Answer

An acid dissociates in water to release

Correct AnswerverifiedShow Answer

Organisms use carbohydrates in all of the following ways EXCEPT

Correct AnswerverifiedShow Answer

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Where thymine has a nonpolar group, pyri...
View Answer

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Phospholipids have polar phosphate "head...
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