Test Bank - Forensic Biology 2nd Edition, by Richard Li |All Chapters Included
Anything that prevents ATP formation will most likely - (answer)Result in cell death
When a cell uses chemical energy to perform work, it couples a(n) _____reaction with a(n)
_____________ reaction. - (answer)Exergonic......endergonic
Which of the following is true about the ATP molecule? - (answer)It contains a nitrogen base molecule
called adenine
ATP can be used as the cell's energy currency, because_______ - (answer)Endergonic reactions can be
fueled by coupling them with the hydrolysis of high-energy phosphate bonds in ATP
An energy barrier_____ - (answer)Prevents the spontaneous decomposition of ATP in the cell
Most of a cell's enzymes are_____ - (answer)Proteins
When an enzyme catalyzes a reaction, ____ - (answer)It lowers the activation energy of the reactant
The active site of an enzyme is_____ - (answer)The region of an enzyme that attaches to a substrate
Which one of the following is false? - (answer)Enzymes are used up in chemical reactions
Which one of the following is true? - (answer)Enzymes catalyze specific reactions
Which of the following substances could be a cofactor?
A) a proteim
B) a polypeptide
C) a zinc atom
D) a ribosome
, Test Bank - Forensic Biology 2nd Edition, by Richard Li |All Chapters Included
E none of the choices are correct - (answer)a zinc atom
A child is brought to the hospital with a fever of 107 degrees F. Doctors immediately order an ice bath to
lower the child's temperature. Which explanation offers the most logical reason for this action? -
(answer)Elevated body temperatures may denature enzymes. This would interfere with the cell's
abilities to catalyze various reactions
Heating inactivates enzymes by - (answer)Changing the enzymes 3 dimensional shape
Which of the following is a coenzyme? - (answer)Vitamin B6
Which of the following can affect the rate of an enzyme-catalyzed reaction? - (answer)All of the choices:
Temperature
pH
Competitive inhibitors
Non competitive inhibitors
Inhibition of an enzyme is irreversible when - (answer)Bonds form between inhibitor and enzyme
How does inhibition of an enzyme-catalyzed reaction by a competitive inhibitor differ from inhibition of
a noncompetitive inhibitor? - (answer)Competitive inhibitors bind to the active site of the enzyme; non
competitive inhibitors bind to a different site
Bacterial production of the enzymes needed for the synthesis of the amino acid tryptophan declines
with increasing levels of trytophan and increases as tryptophan levels decline. This is an example of -
(answer)Feedback inhibition
A medical research team is concerned about the outbreak of a new disease in humans. The bacteria that
cause the disease resemble bacteria that cause a similar disease in cattle. The bovine disease is treated
with a drug that inhibits a bacterial enzyme crucial to bacterial cell division. As the researchers prepare
to test the drug in humans, they will - (answer)Be uncertain about its safety; human cells contain some
Anything that prevents ATP formation will most likely - (answer)Result in cell death
When a cell uses chemical energy to perform work, it couples a(n) _____reaction with a(n)
_____________ reaction. - (answer)Exergonic......endergonic
Which of the following is true about the ATP molecule? - (answer)It contains a nitrogen base molecule
called adenine
ATP can be used as the cell's energy currency, because_______ - (answer)Endergonic reactions can be
fueled by coupling them with the hydrolysis of high-energy phosphate bonds in ATP
An energy barrier_____ - (answer)Prevents the spontaneous decomposition of ATP in the cell
Most of a cell's enzymes are_____ - (answer)Proteins
When an enzyme catalyzes a reaction, ____ - (answer)It lowers the activation energy of the reactant
The active site of an enzyme is_____ - (answer)The region of an enzyme that attaches to a substrate
Which one of the following is false? - (answer)Enzymes are used up in chemical reactions
Which one of the following is true? - (answer)Enzymes catalyze specific reactions
Which of the following substances could be a cofactor?
A) a proteim
B) a polypeptide
C) a zinc atom
D) a ribosome
, Test Bank - Forensic Biology 2nd Edition, by Richard Li |All Chapters Included
E none of the choices are correct - (answer)a zinc atom
A child is brought to the hospital with a fever of 107 degrees F. Doctors immediately order an ice bath to
lower the child's temperature. Which explanation offers the most logical reason for this action? -
(answer)Elevated body temperatures may denature enzymes. This would interfere with the cell's
abilities to catalyze various reactions
Heating inactivates enzymes by - (answer)Changing the enzymes 3 dimensional shape
Which of the following is a coenzyme? - (answer)Vitamin B6
Which of the following can affect the rate of an enzyme-catalyzed reaction? - (answer)All of the choices:
Temperature
pH
Competitive inhibitors
Non competitive inhibitors
Inhibition of an enzyme is irreversible when - (answer)Bonds form between inhibitor and enzyme
How does inhibition of an enzyme-catalyzed reaction by a competitive inhibitor differ from inhibition of
a noncompetitive inhibitor? - (answer)Competitive inhibitors bind to the active site of the enzyme; non
competitive inhibitors bind to a different site
Bacterial production of the enzymes needed for the synthesis of the amino acid tryptophan declines
with increasing levels of trytophan and increases as tryptophan levels decline. This is an example of -
(answer)Feedback inhibition
A medical research team is concerned about the outbreak of a new disease in humans. The bacteria that
cause the disease resemble bacteria that cause a similar disease in cattle. The bovine disease is treated
with a drug that inhibits a bacterial enzyme crucial to bacterial cell division. As the researchers prepare
to test the drug in humans, they will - (answer)Be uncertain about its safety; human cells contain some
