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Biology 2015

Sylvia S. Mader, Michael Windelspecht

Chapter 6

Metabolism: Energy and Enzymes

Educators

JY
ER
+ 3 more educators

Problem 1

The fact that energy transformations increase the amount of entropy is the basis of which of the following?
a. cell theory
b. first law of thermodynamics
c. second law of thermodynamics
d. oxidation-reduction reactions

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Problem 2

The energy stored in the carbon-carbon bonds of glucose is an example of _____ energy.
a. kinetic
b. potential
c. chemical
d. mechanical
e. Both b and c are correct

Nalvi D.
Numerade Educator

Problem 3

During energy transformations, the majority of energy is converted to
a. chemical bonds.
b. heat.
c. ATP.
d. glucose molecules

Kyle U.
Numerade Educator

Problem 4

Exergonic reactions
a. are spontaneous.
b. have a negative delta G value.
c. release energy.
d. All of these are correct.

Nalvi D.
Numerade Educator

Problem 5

Which of the following is incorrect regarding ATP?
a. It is the energy currency of the cell.
b. It is stable.
c. It is recycled using ADP and inorganic phosphate.
d. Cells keep only small amounts of ATP on hand.

ER
Ellen R.
Numerade Educator

Problem 6

The sum of all the chemical reactions in a cell is called
a. free energy.
b. entropy.
c. metabolism.
d. oxidation-reduction reactions.

Nalvi D.
Numerade Educator

Problem 7

Which of the following is incorrect regarding the active site of an enzyme?
a. is unique to that enzyme
b. is the part of the enzyme where its substrate can fit
c. can be used over and over again
d. is not affected by environmental factors, such as pH and temperature

Josh T.
Numerade Educator

Problem 8

Which of the following environmental conditions may have an influence on enzyme activity?
a. substrate concentration
b. temperature
c. pH
d. All of these are correct.

Nalvi D.
Numerade Educator

Problem 9

In which of the following does an inhibitor bind to an allosteric site on an enzyme?
a. competitive inhibition
b. noncompetitive inhibition
c. redox reactions
d. None of the above are correct.

Jannatul F.
Numerade Educator

Problem 10

Enzymes catalyze chemical reactions by which of the following?
a. lowering the energy of activation in the reaction
b. raising the energy of activation in the reaction
c. increasing entropy
d. increasing the free energy of the products

Nalvi D.
Numerade Educator

Problem 11

The gain of electrons by a molecule is called
a. inhibition.
b. entropy.
c. oxidation.
d. reduction.

Noah B.
Numerade Educator

Problem 12

In which of the following processes is carbon dioxide reduced to form carbohydrate?
a. cellular respiration
b. noncompetitive inhibition
c. photosynthesis
d. induced fit model

Nalvi D.
Numerade Educator