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Biology

Peter H. Raven, George B. Johnson, Kenneth A. Mason

Chapter 6

Energy and Metabolism - all with Video Answers

Educators

RS

Chapter Questions

03:42

Problem 1

A covalent bond between two atoms represents what kind of energy?
a. Kinetic energy
b. Potential energy
c. Mechanical energy
d. Solar enerrrrrr

Lara Gossage
Lara Gossage
Numerade Educator
04:21

Problem 2

During a redox reaction the molecule that gains an electron has been
a. reduced and now has a higher energy level.
b. oxidized and now has a lower energy level.
c. reduced and now has a lower energy level.
d. oxidized and now has a higher energy level.

Lara Gossage
Lara Gossage
Numerade Educator
00:27

Problem 3

An endergonic reaction has the following properties
a. $\quad+\Delta G$ and the reaction is spontaneous.
b. $\quad+\Delta G$ and the reaction is not spontaneous.
c. $\quad-\Delta G$ and the reaction is spontaneous.
d. $\quad-\Delta G$ and the reaction is not spontaneous.

RS
Rajpal Sian
Numerade Educator
04:54

Problem 4

A spontaneous reaction is one in which
a. the reactants have a higher free energy than the products.
b. the products have a higher free energy than the reactants.
c. an input of energy is required.
d. entropy is decreased.

Lara Gossage
Lara Gossage
Numerade Educator
04:34

Problem 5

What is activation energy?
a. The thermal energy associated with random movements of molecules
b. The energy released through breaking chemical bonds
c. The difference in free energy between reactants and products
d. The energy required to initiate a chemical reaction

Lara Gossage
Lara Gossage
Numerade Educator
05:34

Problem 6

Which of the following is NOT a property of a catalyst?
a. A catalyst reduces the activation energy of a reaction.
b. A catalyst lowers the free energy of the reactants.
c. A catalyst does not change as a result of the reaction.
d. A catalyst works in both the forward and reverse directions of a reaction.

Lara Gossage
Lara Gossage
Numerade Educator
06:04

Problem 7

Where is the energy stored in a molecule of ATP?
a. Within the bonds between nitrogen and carbon
b. In the carbon-to-carbon bonds found in the ribose
c. In the phosphorus-to-oxygen double bond
d. In the bonds connecting the two terminal phosphate groups

Lara Gossage
Lara Gossage
Numerade Educator