Chapter 3

Question 1

Metabolism

Answer 1

the sum of the chemical reactions taking place – sums up anabolic and catabolic reactions

Question 2

Kinetic Energy

Answer 2

occurs as a result of motion

Question 3

Potential Energy

Answer 3

stored within an object; depends on location and/or chemical structure

Question 4

Chemical potential

Answer 4

electrons and protons

Question 5

Gravitational potential

Answer 5

distance from Earth

Question 6

First Law of Thermodynamics

Answer 6

Energy cannot be created nor
destroyed; it can only be changed from one form to another.

Question 7

Second Law of Thermodynamics

Answer 7

Every time energy is converted to another form, some of the useful energy becomes unusable and increases the entropy of the universe

Question 8

Entropy

Answer 8

the degree of disorder in a system

Question 9

Catabolic Reaction

Answer 9

complex molecules broken down, releasing energy

Question 10

Anabolic

Answer 10

simple molecules combined, consuming energy

Question 11

Energy Coupling

Answer 11

using energy released from one reaction to drive another reaction

Question 12

Why do cells need energy?

Answer 12

For mechanical, transport and chemical work