Question 1

An important mechanism that controls metabolic pathways under physiological conditions is

Accepted Answer

A)  positive feedback.
B)  signal transduction.
C)  negative feedback.
D)  genetic control.E) A) and C)
F) A) and B)

Question 2

The DNA damage response replaces mismatched nucleotides.

Accepted Answer

A) True 
 B)False

Question 3

Arsenic poisoning harms the body by

Accepted Answer

A)  unraveling the DNA double helix.
B)  interfering with cellular extraction of energy from glucose.
C)  forming more sulfur bonds in proteins.
D)  rotting the teeth.E) B) and C)
F) A) and D)

Question 4

Transcription yields protein and translation produces RNA.

Accepted Answer

A) True 
 B)False

Question 5

In what molecule are codons found?

Accepted Answer

A)  mRNA
B)  tRNA
C)  rRNA
D)  Proteins.E) C) and D)
F) B) and D)

Question 6

Three types of RNA participate in protein synthesis.

Accepted Answer

A) True 
 B)False

Question 7

The synthesis of an ATP molecule requires two ADP molecules.

Accepted Answer

A) True 
 B)False

Question 8

An active site is the part of a substrate molecule that binds an enzyme.

Accepted Answer

A) True 
 B)False

Question 9

A metabolic pathway is a particular sequence of enzyme-controlled reactions.

Accepted Answer

A) True 
 B)False

Question 10

An example of an anabolic reaction is

Accepted Answer

A)  many monosaccharides bonding, forming glycogen.
B)  a dipeptide breaking down into two amino acids.
C)  glycerol reacting with three fatty acid molecules to yield water and proteins.
D)  glycogen breaking down into many monosaccharides.E) B) and D)
F) All of the above

Question 11

The electron transport chain is a series of enzyme complexes that pass electrons one-to-another, releasing energy that is used to phosphorylate ADP to ATP on the inner mitochondrial membrane.

Accepted Answer

A) True 
 B)False

Question 12

In the citric acid cycle,

Accepted Answer

A)  carbon dioxide is released.
B)  oxygen atoms are released.
C)  4 ATP molecules are formed.
D)  hydrochloric acid is released.E) None of the above
F) A) and C)

Question 13

Which of the following is not true regarding RNA?

Accepted Answer

A)  It is transcribed in the nucleus and enters the cytoplasm.
B)  It includes ribose, a 5-carbon sugar.
C)  It is double-stranded.
D)  It has cytosine as one of its four nitrogenous bases.E) B) and C)
F) A) and B)

Question 14

A mutation is

Accepted Answer

A)  a change in a DNA sequence in less than 1% of a population that affects anatomy and/or physiology.
B)  a common genetic variant.
C)  always beneficial to health.
D)  always harmful to health.E) B) and C)
F) C) and D)

Question 15

Oxidation of glucose is important because it releases energy.

Accepted Answer

A) True 
 B)False

Question 16

Metabolism refers to all of the chemical reactions in a cell.

Accepted Answer

A) True 
 B)False

Question 17

Three types of genetic changes are

Accepted Answer

A)  replication, transcription, and translation.
B)  A to C, G to C, and U to A.
C)  mutations, SNPs, and changes in copy number.
D)  adenine, guanine, and cytosine.E) C) and D)
F) B) and D)

Question 18

If the DNA sequence for an enzyme lacked a stop codon, this would mean

Accepted Answer

A)  transcription would not have an end point.
B)  translation would not have an end point.
C)  DNA replication would not be possible.
D)  the incorrect amino acid would be incorporated into the final enzyme at that point.E) C) and D)
F) All of the above

Question 19

The enzyme catalase acts on the substrate

Accepted Answer

A)  oxygen.
B)  hydrogen.
C)  hydrogen peroxide.
D)  peroxidase.E) C) and D)
F) B) and C)

Question 20

The correspondence between a unit of DNA information and an amino acid is the genetic ________.

Accepted Answer

The answer of The correspondence between a unit of DNA...

Exam 4: Cellular Metabolism

In the citric acid cycle,

Correct AnswerverifiedShow Answer

An active site is the part of a substrate molecule that binds an enzyme.

Correct AnswerverifiedShow Answer

Which of the following is not true regarding RNA?

Correct AnswerverifiedShow Answer

Transcription yields protein and translation produces RNA.

Correct AnswerverifiedShow Answer

A metabolic pathway is a particular sequence of enzyme-controlled reactions.

Correct AnswerverifiedShow Answer

Three types of genetic changes are

Correct AnswerverifiedShow Answer

An example of an anabolic reaction is

Correct AnswerverifiedShow Answer

The electron transport chain is a series of enzyme complexes that pass electrons one-to-another, releasing energy that is used to phosphorylate ADP to ATP on the inner mitochondrial membrane.

Correct AnswerverifiedShow Answer

The synthesis of an ATP molecule requires two ADP molecules.

Correct AnswerverifiedShow Answer

Arsenic poisoning harms the body by

Correct AnswerverifiedShow Answer

The enzyme catalase acts on the substrate

Correct AnswerverifiedShow Answer

A mutation is

Correct AnswerverifiedShow Answer

In what molecule are codons found?

Correct AnswerverifiedShow Answer

If the DNA sequence for an enzyme lacked a stop codon, this would mean

Correct AnswerverifiedShow Answer

Metabolism refers to all of the chemical reactions in a cell.

Correct AnswerverifiedShow Answer

The DNA damage response replaces mismatched nucleotides.

Correct AnswerverifiedShow Answer

Oxidation of glucose is important because it releases energy.

Correct AnswerverifiedShow Answer

An important mechanism that controls metabolic pathways under physiological conditions is

Correct AnswerverifiedShow Answer

The correspondence between a unit of DNA information and an amino acid is the genetic ________.

Correct AnswerverifiedShow Answer

Three types of RNA participate in protein synthesis.

Correct AnswerverifiedShow Answer

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