BIO 1406 TEST 3 (8-10)100% ACCURATE
In the figure shown above, identify the bond that is cleaved when this molecule is
coupled with an endergonic reaction to drive the endergonic reaction to completion.
(The molecule of water also required for this reaction is not shown.) - ANSWERA
In order to prevent wasting chemical resources, sometimes an end product of a
metabolic pathway, shuts down the pathway, this is known as. - ANSWERfeedback
inhibition
A catalyst is a chemical agent that speeds up a reaction without being consumed.
Enzymes are biological catalysts. - ANSWERTrue
Which of the following is not a form of energy? - ANSWERdiffusion
For an equilibrium... - ANSWERall of these represent equilibrium
When a molecule is reduced, it _________. - ANSWERgains electrons
Enzymes are: - ANSWERproteins
Which of the following is a statement of the first law of thermodynamics? -
ANSWEREnergy cannot be created or destroyed.
In the absence of ATP synthase, animal cells would not be able to ____. -
ANSWERcarry out oxidative phosphorylation
A [x] pathway is a downhill reaction releasing energy and breaking complex molecules
into simpler compounds. In contrast, [y] pathways are uphill, consuming energy to build
complex molecules from simpler ones. - ANSWERCatabolic
Anabolic
What term is given to the reactant an enzyme acts on - ANSWERSubstrate
A kinase is - ANSWERAn enzyme involved in the transfer of a phosphate
-ΔG suggests that the reaction is spontaneous - ANSWERTrue
Which of the following will have highest amount of energy? - ANSWERGamma rays
Reactants capable of interacting to form products in a chemical reaction must first
overcome a thermodynamic barrier known as the reaction's - ANSWERactivation
energy.
, The lock-and-key analogy for enzymes applies to the specificity of enzymes _____. -
ANSWERbinding to their substrate
Using the image provided, which is the correct statment - ANSWERA) Mitochondrial
membrane
B) innnermitochondrial membrane
C) intermembrane space
D) matrix.
A systems energy that can do work when pressure and temperature are uniform is... -
ANSWER
When energy is transformed to different forms, some energy always escapes as
_________________ . - ANSWERheat
Which of the following in the figure represents the activation energy of an enzyme-
catalyzed reaction? - ANSWERnot c or d
Enzymes aid in metabolism by - ANSWERincreasing the rate of reaction
Which of the following is NOT a true statement about equilibrium? - ANSWERCells are
at equilibrium
A catalyst is a chemical agent that speeds up a reaction without being consumed.
Enzymes are biological catalysts. - ANSWERTrue
According to the first law of thermodynamics, - ANSWERenergy only changes forms.
A chemical binding to the active site of the enzyme and blocking the substrate binding is
called - ANSWERcompetitive inhibition
Reduction is the addition of electrons. - ANSWERTrue
Zinc, an essential trace element for most organisms, is present in the active site of the
enzyme carboxypeptidase. The zinc most likely functions as a(n) - ANSWERcofactor
necessary for enzyme activity
What is the ultimate fate of oxygen gas (O 2) in cellular respiration? - ANSWERIt is
converted to water.
The average net gain of ATP from the complete aerobic respiration of one molecule of
glucose: - ANSWER30-32
What is the ultimate source of chemical energy for all living organisms? - ANSWERATP
Oxidation is the addition of electrons. - ANSWERFalse
In the figure shown above, identify the bond that is cleaved when this molecule is
coupled with an endergonic reaction to drive the endergonic reaction to completion.
(The molecule of water also required for this reaction is not shown.) - ANSWERA
In order to prevent wasting chemical resources, sometimes an end product of a
metabolic pathway, shuts down the pathway, this is known as. - ANSWERfeedback
inhibition
A catalyst is a chemical agent that speeds up a reaction without being consumed.
Enzymes are biological catalysts. - ANSWERTrue
Which of the following is not a form of energy? - ANSWERdiffusion
For an equilibrium... - ANSWERall of these represent equilibrium
When a molecule is reduced, it _________. - ANSWERgains electrons
Enzymes are: - ANSWERproteins
Which of the following is a statement of the first law of thermodynamics? -
ANSWEREnergy cannot be created or destroyed.
In the absence of ATP synthase, animal cells would not be able to ____. -
ANSWERcarry out oxidative phosphorylation
A [x] pathway is a downhill reaction releasing energy and breaking complex molecules
into simpler compounds. In contrast, [y] pathways are uphill, consuming energy to build
complex molecules from simpler ones. - ANSWERCatabolic
Anabolic
What term is given to the reactant an enzyme acts on - ANSWERSubstrate
A kinase is - ANSWERAn enzyme involved in the transfer of a phosphate
-ΔG suggests that the reaction is spontaneous - ANSWERTrue
Which of the following will have highest amount of energy? - ANSWERGamma rays
Reactants capable of interacting to form products in a chemical reaction must first
overcome a thermodynamic barrier known as the reaction's - ANSWERactivation
energy.
, The lock-and-key analogy for enzymes applies to the specificity of enzymes _____. -
ANSWERbinding to their substrate
Using the image provided, which is the correct statment - ANSWERA) Mitochondrial
membrane
B) innnermitochondrial membrane
C) intermembrane space
D) matrix.
A systems energy that can do work when pressure and temperature are uniform is... -
ANSWER
When energy is transformed to different forms, some energy always escapes as
_________________ . - ANSWERheat
Which of the following in the figure represents the activation energy of an enzyme-
catalyzed reaction? - ANSWERnot c or d
Enzymes aid in metabolism by - ANSWERincreasing the rate of reaction
Which of the following is NOT a true statement about equilibrium? - ANSWERCells are
at equilibrium
A catalyst is a chemical agent that speeds up a reaction without being consumed.
Enzymes are biological catalysts. - ANSWERTrue
According to the first law of thermodynamics, - ANSWERenergy only changes forms.
A chemical binding to the active site of the enzyme and blocking the substrate binding is
called - ANSWERcompetitive inhibition
Reduction is the addition of electrons. - ANSWERTrue
Zinc, an essential trace element for most organisms, is present in the active site of the
enzyme carboxypeptidase. The zinc most likely functions as a(n) - ANSWERcofactor
necessary for enzyme activity
What is the ultimate fate of oxygen gas (O 2) in cellular respiration? - ANSWERIt is
converted to water.
The average net gain of ATP from the complete aerobic respiration of one molecule of
glucose: - ANSWER30-32
What is the ultimate source of chemical energy for all living organisms? - ANSWERATP
Oxidation is the addition of electrons. - ANSWERFalse
