Chemical Reactions and ATP

Part A

In this reaction _____.

	CD is a product
	the products have less potential energy than the reactants
	entropy has decreased
	AC is a reactant
	the products have been rearranged to form reactants

Correct

This is what is shown by the graph.

Part B

In this reaction _____.

	heat has been released to the environment
	entropy has decreased
	the chemical energy of the products is greater than that of the reactants
	disorder has decreased
	the kinetic energy of the reactants is less than that of the products

Correct

The potential energy of the products is less than that of the reactants.

Part C

The following reaction
A --> B + C + heat
is a(n) _____ reaction.

	exergonic
	endergonic
	dehydration synthesis
	anabolic
	exchange

Correct

Energy has been released.

Part D

A(n) _____ reaction occurs spontaneously.

	kinetic
	anabolic
	chemical
	endergonic
	exergonic

Correct

In exergonic reactions the products have less potential energy than the reactants.

Part E

Which of these reactions requires a net input of energy from its surroundings?

	exergonic
	catabolic
	hydrolysis
	ATP --> ADP + P
	endergonic

Correct

The products of endergonic reactions have more potential energy than the reactants.

Part F

In cells, what is usually the immediate source of energy for an endergonic reaction?

	ADP
	sugar
	ATP
	glucose
	as spontaneous reactions, endergonic reactions do not need an addition of energy

Correct

The hydrolysis of ATP provides the energy needed for an endergonic reaction.

Part G

The reaction ADP + P --> ATP is a(n) _____ reaction.

	exergonic
	chemical
	endergonic
	hydrolysis
	spontaneous

Correct

Energy has been acquired from the surroundings.

Part H

The energy for an endergonic reaction comes from a(n) _____ reaction.

	exergonic
	anabolic
	synthesis
	ADP + P --> ATP
	glucose + glucose --> maltose

Correct

The energy released by an exergonic reaction can be used to drive an endergonic reaction.

Part I

What is the fate of the phosphate group that is removed when ATP is converted to ADP?

	It is acquired by a reactant in an endergonic reaction.
	It is acquired by a reactant in a spontaneous reaction.
	It is broken down into one phosphorus and four oxygen atoms.
	It is used to convert an ATP into an AQP.
	It is acquired by a reactant in an exergonic reaction.

Correct

By acquiring the phosphate group the reactant acquires energy.

Part J

This graph illustrates a(n) _____ reaction.

	catabolic
	hydrolysis
	exergonic
	spontaneous
	endergonic

Correct

The products contain more potential energy than the reactants.

Part K

Select the INCORRECT association.

	enzyme ... protein
	exergonic ... spontaneous
	kinetic energy ... motion
	potential energy ... positional energy
	exergonic ... uphill

Correct

Exergonic reactions release energy.

Part L

What is energy coupling?

	a barrier to the initiation of a reaction
	a description of the energetic relationship between the reactants and products in an exergonic reaction
	the hydrolysis of ATP to ADP + P
	the use of energy released from an exergonic reaction to drive an endergonic reaction
	the use of an enzyme to reduce EA

Correct

This is energy coupling.