$$\text{Work} = \text{Force} \times \text{Distance}$$

Question 1

Which of the following best describes an anabolic pathway in cellular metabolism?

Accepted Answer

A process that consumes energy to build up polymers from monomers.

Question 2

Which equation correctly represents the First Law of Thermodynamics as it applies to biological systems?

Accepted Answer

$$\Delta E_{universe} = 0$$

Question 3

A glucose molecule contains stored chemical energy. What type of energy is this?

Accepted Answer

Potential energy

Question 4

Which of the following scenarios best illustrates the Second Law of Thermodynamics?

Accepted Answer

A mouse losing heat to its environment during cellular respiration.

Question 5

Which of the following is NOT an example of a biological system?

Accepted Answer

A rock sitting on a beach.

Question 6

Which statement about entropy is correct?

Accepted Answer

Entropy increases as disorder increases.

Question 7

During cellular respiration, glucose is broken down to create ATP. Which type of metabolic pathway does this represent?

Accepted Answer

Catabolic pathway

Question 8

Which of the following is NOT a form of kinetic energy?

Accepted Answer

When glucose molecules are broken down to create energy for cellular work

Question 9

If a system absorbs energy from its surroundings, what happens to the entropy of the system?

Accepted Answer

It increases

Question 10

Which of the following statements is TRUE regarding energy flow in the food chain?

Accepted Answer

Some energy is lost as heat at each trophic level.

Question 11

Which of the following best describes the role of enzymes in metabolic pathways?

Accepted Answer

They act as catalysts to lower the activation energy of reactions.

Question 12

Which formula best represents the relationship between energy, work, and change in biology?

Accepted Answer

$$	ext{Work} = 	ext{Force} 	imes 	ext{Distance}$$

Question 13

Which of the following is an example of energy coupling in biological systems?

Accepted Answer

Using the energy released from ATP hydrolysis to drive active transport.

Question 14

Which of the following statements about the First Law of Thermodynamics is FALSE?

Accepted Answer

Energy can be destroyed.

Question 15

A metabolic pathway consists of several steps, each catalyzed by a different enzyme. What is the advantage of this organization?

Accepted Answer

It allows for regulation and control at multiple points.

Question 16

Which of the following is a correct statement about catabolic pathways?

Accepted Answer

They release energy by breaking down complex molecules into simpler ones.

Question 17

Which of the following is an example of potential energy in a biological context?

Accepted Answer

A glucose molecule storing chemical energy.

Question 18

Which of the following best explains why 100% efficient energy conversion is impossible?

Accepted Answer

Some energy is always lost as heat, increasing universal entropy.

Question 19

Which of the following is a consequence of the Second Law of Thermodynamics in living organisms?

Accepted Answer

Organisms must constantly obtain energy to maintain order.

Question 20

Which of the following statements is TRUE regarding metabolic pathways?

Accepted Answer

They involve a series of reactions, each catalyzed by a different enzyme.

Metabolism and Thermodynamics in Biology: Study Guide

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