Question 1

and groups are negatively charged functional groups of carbon, whereas the group is a positively charged functional group.

Accepted Answer

Carboxyl; ...

Question 2

Which of the following biological polymers is mismatched with its monomer?

Accepted Answer

A)  DNA - nucleotide
B)  chitin - monosaccharide
C)  enzyme - amino acid
D)  cellulose - amino acid
E)  protein - amino acidF) B) and E)
G) B) and C)

Question 3

The cell membrane can be described most accurately as

Accepted Answer

A)  impermeable to all polar molecules.
B)  permeable to only larger molecules.
C)  permeable to most small molecules, but impermeable to larger ones.
D)  permeable to all molecules.
E)  permeable to some molecules and impermeable to others.F) A) and E)
G) B) and D)

Question 4

carbon atoms allow for the formation of , which are mirror images of each other.

Accepted Answer

Asymmetric...

Question 5

An enzyme synthesized in the laboratory is found to have little activity when compared to the enzyme extracted from cell culture. Both enzymes were examined and have identical amino acid composition. What is the best explanation for the lack of activity of the synthesized enzyme?

Accepted Answer

A)  The synthetic enzyme was not made of amino acids.
B)  Denaturation of the synthesized enzyme was not complete.
C)  The synthesized enzyme was not folded correctly because molecular chaperones were not present.
D)  The ATP required for self- assembly was present in the cell extract but not in the laboratory synthesis.
E)  The van der Waals radius was altered during laboratory synthesis.F) A) and E)
G) B) and E)

Question 6

The purpose of reducing and oxidizing agents in denaturation and renaturation is the breaking and reforming of the bond.

Accepted Answer

The answer of The purpose of reducing and oxidizing agents...

Question 7

Which of the following is NOT true of hydrocarbons?

Accepted Answer

A)  Many hydrocarbons are used in living systems.
B)  Phospholipids have hydrocarbon tails.
C)  Hydrocarbons are insoluble in water.
D)  Only hydrogen atoms are used to complete the valence requirements of carbon.
E)  Octane is a hydrocarbon.F) C) and D)
G) A) and E)

Question 8

Due to the directionality of polymer synthesis, proteins have a distinct _ and
end.

Accepted Answer

amino (- N...

Question 9

Which of the following was NOT considered part of the "alphabet of biochemistry" by George Wald?

Accepted Answer

A)  seven proteins
B)  the 20 amino acids
C)  the 5 nucleotide bases
D)  two sugars
E)  three lipidsF) B) and D)
G) All of the above

Question 10

Which of the following is NOT a fundamental property of carbon?

Accepted Answer

A)  Carbon- containing molecules form stereoisomers.
B)  Carbon- containing molecules are diverse.
C)  Carbon has a valence of 4.
D)  Carbon atoms are most likely to form ionic bonds with one another.
E)  Carbon- containing molecules are stable.F) A) and E)
G) A) and D)

Question 11

Which of the following molecules is involved with assisted assembly?

Accepted Answer

A)  water molecules
B)  helper proteins
C)  tobacco mosaic viruses
D)  molecular chaperones
E)  none of the aboveF) A) and B)
G) D) and E)

Question 12

Which of the following is NOT a possible noncovalent interaction?

Accepted Answer

A)  van der Waals interactions
B)  polar covalent bonding
C)  ionic bonding
D)  hydrogen bonding
E)  hydrophobic interactionsF) D) and E)
G) C) and D)

Question 13

The moon lacks life and varies dramatically in temperature. If we could keep a layer of water spread on the surface of the moon, what effect would it have?

Accepted Answer

A)  The temperatures would drop to the lower extremes.
B)  Physical conditions would remain the same.
C)  Life would be possible, but it would have to withstand these extremes in temperature.
D)  Water would absorb and hold heat and moderate the temperature extremes.
E)  Because water has a high heat of vaporization, the temperatures would rise to the upper extremes.F) A) and B)
G) C) and E)

Question 14

Ribose has five carbon atoms, of which three are asymmetric. What is the maximum number of stereoisomers that may exist for ribose?

Accepted Answer

A)  8
B)  10
C)  2
D)  6
E)  4F) B) and D)
G) C) and D)

Question 15

In order to facilitate polymerization, monomers must be .

Accepted Answer

The answer of In order to facilitate polymerization, monomers must...

Question 16

A hypothetical automobile has 100 parts that are to be assembled by four workers. During the car's assembly, each worker constructs 25 parts individually, and then the four resulting components are assembled together. The manner in which the car was assembled is much like which cellular strategy?

Accepted Answer

A)  renaturation
B)  self- assembly
C)  assisted self- assembly
D)  hierarchical assembly
E)  electrostatic assemblyF) A) and D)
G) B) and E)

Exam 2: The Chemistry of the Cell

Ribose has five carbon atoms, of which three are asymmetric. What is the maximum number of stereoisomers that may exist for ribose?

Correct Answer
verified

The moon lacks life and varies dramatically in temperature. If we could keep a layer of water spread on the surface of the moon, what effect would it have?

Correct Answer
verified

An enzyme synthesized in the laboratory is found to have little activity when compared to the enzyme extracted from cell culture. Both enzymes were examined and have identical amino acid composition. What is the best explanation for the lack of activity of the synthesized enzyme?

Correct Answer
verified

A hypothetical automobile has 100 parts that are to be assembled by four workers. During the car's assembly, each worker constructs 25 parts individually, and then the four resulting components are assembled together. The manner in which the car was assembled is much like which cellular strategy?

Correct Answer
verified

The purpose of reducing and oxidizing agents in denaturation and renaturation is the breaking and reforming of the bond.

Correct Answer
verified

Which of the following was NOT considered part of the "alphabet of biochemistry" by George Wald?

Correct Answer
verified

Which of the following biological polymers is mismatched with its monomer?

Correct Answer
verified

and groups are negatively charged functional groups of carbon, whereas the group is a positively charged functional group.

Correct Answer
verified
Carboxyl; ...
View Answer

Which of the following is NOT true of hydrocarbons?

Correct Answer
verified

Which of the following is NOT a possible noncovalent interaction?

Correct Answer
verified

In order to facilitate polymerization, monomers must be .

Correct Answer
verified

Which of the following is NOT a fundamental property of carbon?

Correct Answer
verified

The cell membrane can be described most accurately as

Correct Answer
verified

carbon atoms allow for the formation of , which are mirror images of each other.

Correct Answer
verified
Asymmetric...
View Answer

Which of the following molecules is involved with assisted assembly?

Correct Answer
verified

Due to the directionality of polymer synthesis, proteins have a distinct _ and end.

Correct Answer
verified
amino (- N...
View Answer

Exam 2: The Chemistry of the Cell

Ribose has five carbon atoms, of which three are asymmetric. What is the maximum number of stereoisomers that may exist for ribose?

Correct AnswerverifiedShow Answer

The moon lacks life and varies dramatically in temperature. If we could keep a layer of water spread on the surface of the moon, what effect would it have?

Correct AnswerverifiedShow Answer

An enzyme synthesized in the laboratory is found to have little activity when compared to the enzyme extracted from cell culture. Both enzymes were examined and have identical amino acid composition. What is the best explanation for the lack of activity of the synthesized enzyme?

Correct AnswerverifiedShow Answer

A hypothetical automobile has 100 parts that are to be assembled by four workers. During the car's assembly, each worker constructs 25 parts individually, and then the four resulting components are assembled together. The manner in which the car was assembled is much like which cellular strategy?

Correct AnswerverifiedShow Answer

The purpose of reducing and oxidizing agents in denaturation and renaturation is the breaking and reforming of the bond.

Correct AnswerverifiedShow Answer

Which of the following was NOT considered part of the "alphabet of biochemistry" by George Wald?

Correct AnswerverifiedShow Answer

Which of the following biological polymers is mismatched with its monomer?

Correct AnswerverifiedShow Answer

and groups are negatively charged functional groups of carbon, whereas the group is a positively charged functional group.

Correct AnswerverifiedCarboxyl; ...View AnswerShow Answer

Which of the following is NOT true of hydrocarbons?

Correct AnswerverifiedShow Answer

Which of the following is NOT a possible noncovalent interaction?

Correct AnswerverifiedShow Answer

In order to facilitate polymerization, monomers must be .

Correct AnswerverifiedShow Answer

Which of the following is NOT a fundamental property of carbon?

Correct AnswerverifiedShow Answer

The cell membrane can be described most accurately as

Correct AnswerverifiedShow Answer

carbon atoms allow for the formation of , which are mirror images of each other.

Correct AnswerverifiedAsymmetric...View AnswerShow Answer

Which of the following molecules is involved with assisted assembly?

Correct AnswerverifiedShow Answer

Due to the directionality of polymer synthesis, proteins have a distinct _ and end.

Correct Answerverifiedamino (- N...View AnswerShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Carboxyl; ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Asymmetric...
View Answer

Correct Answer
verified

Correct Answer
verified
amino (- N...
View Answer