Question 1

Which of the following is true of energy?

Accepted Answer

A) It can be stored in chemical bonds. 
B) It can be released by forming chemical bonds. 
C) It can be transferred from one form to another with 100 percent efficiency. 
D) It can be created from nothing. 
A) It can be stored in chemical bonds. 
B) It can be released by forming chemical bonds. 
C) It can be transferred from one form to another with 100 percent efficiency. 
D) It can be created from nothing.

Question 2

You have been asked to explain to a high school class the second law of thermodynamics and how this law affects the students' lives.Using your own words,describe the second law of thermodynamics,and give an example (other than the examples described in the chapter).

Accepted Answer

The second law of thermodynamics explain

Question 3

Molecules that facilitate the work of enzymes by binding with them are ________.

Accepted Answer

The answer of Molecules that facilitate the work of enzymes...

Question 4

Would ATP be the energy currency of the cell if the phosphate groups the cell contains were not charged? Why or why not?

Accepted Answer

No,the negative charges on the

Question 5

You work hard to pedal your bicycle up a steep hill.You rest when you get to the top,then you let your bicycle roll quickly down the other side of the hill.You converted ________ energy into ________ energy,then you converted it back into ________ energy.

Accepted Answer

A) potential; kinetic; potential 
B) kinetic; potential; kinetic 
C) heat; kinetic; heat 
D) heat; potential; heat 
A) potential; kinetic; potential 
B) kinetic; potential; kinetic 
C) heat; kinetic; heat 
D) heat; potential; heat

Question 6

Energy present in a system that is not usable to do work relates to the system's:

Accepted Answer

A) thermodynamics. 
B) equilibrium. 
C) work. 
D) entropy. 
E) temperature. 
A) thermodynamics. 
B) equilibrium. 
C) work. 
D) entropy. 
E) temperature.

Question 7

Cells can harvest the energy released during exergonic reactions to drive endergonic reactions.

Accepted Answer

A) True 
 B)False

Question 8

Explain how vitamins play a role in cellular metabolism.

Accepted Answer

Vitamins are importa

Question 9

Allosteric regulation depends on inhibitors binding to the active site of enzymes.

Accepted Answer

A) True 
 B)False

Question 10

When a product binds to an allosteric enzyme to slow its reaction,it does which of the following?

Accepted Answer

A) binds to the active site, blocking the binding of substrate 
B) binds to a site other than the active site, changing the shape of the active site and decreasing the binding of substrate 
C) binds to the substrate, blocking its binding of the active site 
D) binds to the product production site, stopping the production of product 
A) binds to the active site, blocking the binding of substrate 
B) binds to a site other than the active site, changing the shape of the active site and decreasing the binding of substrate 
C) binds to the substrate, blocking its binding of the active site 
D) binds to the product production site, stopping the production of product

Question 11

Glucose can be broken down to provide energy for the beating of cilia.Therefore,the glucose must contain:

Accepted Answer

A) potential energy. 
B) kinetic energy. 
C) heat energy. 
D) entropy. 
A) potential energy. 
B) kinetic energy. 
C) heat energy. 
D) entropy.

Question 12

The regulation of an enzyme's activity by means of a molecule binding to a site on the enzyme other than its active site is called ________.

Accepted Answer

allosteric

Question 13

Kinetic energy is ________ and potential energy is ________.

Accepted Answer

A) stored energy; energy that is being used 
B) stored energy; energy that can't be used 
C) energy that can't be used; stored energy 
D) energy that is being used; stored energy 
A) stored energy; energy that is being used 
B) stored energy; energy that can't be used 
C) energy that can't be used; stored energy 
D) energy that is being used; stored energy

Question 14

Why is allosteric regulation important to a cell?

Accepted Answer

A) It allows the cell to control how much of a metabolic product is produced. 
B) It allows the cell to switch to other sources of energy besides ATP. 
C) It reduces the cell's need for coenzymes. 
D) It allows the cell to control how much activation energy is required for enzymatic reactions. 
A) It allows the cell to control how much of a metabolic product is produced. 
B) It allows the cell to switch to other sources of energy besides ATP. 
C) It reduces the cell's need for coenzymes. 
D) It allows the cell to control how much activation energy is required for enzymatic reactions.

Question 15

Which of the following has the most entropy?

Accepted Answer

A) steam 
B) snow 
C) an ice cube 
D) hot water 
E) liquid water 
A) steam 
B) snow 
C) an ice cube 
D) hot water 
E) liquid water

Question 16

In a ________,multiple enzymes are working together in a multistep process.

Accepted Answer

A) feedback loop 
B) coupled reaction 
C) allosteric pathway 
D) metabolic pathway 
A) feedback loop 
B) coupled reaction 
C) allosteric pathway 
D) metabolic pathway

Question 17

Where do substrates bind to enzymes?

Accepted Answer

A) in the active site 
B) anywhere 
C) in the substrate groove 
D) in the effector site 
A) in the active site 
B) anywhere 
C) in the substrate groove 
D) in the effector site

Question 18

Entropy is the measure of ________ in a system.

Accepted Answer

A) energy 
B) disorder 
C) work 
D) order 
E) heat 
A) energy 
B) disorder 
C) work 
D) order 
E) heat

Question 19

Given enough time,sucrose can spontaneously break down into fructose and glucose in a glass of water.

Accepted Answer

A) True 
 B)False

Question 20

What mechanism is used to finely tune enzyme activity according to the needs of the cell?

Accepted Answer

A) competitive inhibition 
B) coupled reactions 
C) enzyme specificity 
D) allosteric regulation 
A) competitive inhibition 
B) coupled reactions 
C) enzyme specificity 
D) allosteric regulation

Exam 6: Lifes Mainspring: an Introduction to Energy

Which of the following is true of energy?

You have been asked to explain to a high school class the second law of thermodynamics and how this law affects the students' lives.Using your own words,describe the second law of thermodynamics,and give an example (other than the examples described in the chapter).

Molecules that facilitate the work of enzymes by binding with them are ________.

Would ATP be the energy currency of the cell if the phosphate groups the cell contains were not charged? Why or why not?

You work hard to pedal your bicycle up a steep hill.You rest when you get to the top,then you let your bicycle roll quickly down the other side of the hill.You converted ________ energy into ________ energy,then you converted it back into ________ energy.

Energy present in a system that is not usable to do work relates to the system's:

Cells can harvest the energy released during exergonic reactions to drive endergonic reactions.

Explain how vitamins play a role in cellular metabolism.

Allosteric regulation depends on inhibitors binding to the active site of enzymes.

When a product binds to an allosteric enzyme to slow its reaction,it does which of the following?

Glucose can be broken down to provide energy for the beating of cilia.Therefore,the glucose must contain:

The regulation of an enzyme's activity by means of a molecule binding to a site on the enzyme other than its active site is called ________.

Kinetic energy is ________ and potential energy is ________.

Why is allosteric regulation important to a cell?

Which of the following has the most entropy?

In a ________,multiple enzymes are working together in a multistep process.

Where do substrates bind to enzymes?

Entropy is the measure of ________ in a system.

Given enough time,sucrose can spontaneously break down into fructose and glucose in a glass of water.

What mechanism is used to finely tune enzyme activity according to the needs of the cell?

Science As a Way of Learning: a Guide to the Natural World

Fundamental Building Blocks: Chemistry, water, and Ph

Lifes Components: Biological Molecules

Lifes Home: the Cell

Lifes Border: the Plasma Membrane

Vital Harvest: Deriving Energy From Food

The Green Worlds Gift: Photosynthesis

The Links in Lifes Chain: Genetics and Cell Division

Preparing for Sexual Reproduction: Meiosis

The First Geneticist: Mendel and His Discoveries

Units of Heredity: Chromosomes and Inheritance

Passing on Lifes Information: Dna Structure and Replication

How Proteins Are Made: Genetic Transcription, translation, and Regulation

The Future Isnt What It Used to Be: Biotechnology

An Introduction to Evolution: Charles Darwin, evolutionary Thought, and the Evidence for Evolution

The Means of Evolution: Microevolution

The Outcomes of Evolution: Macroevolution

A Slow Unfolding: the History of Life on Earth

Arriving Late,traveling Far: the Evolution of Human Beings

Viruses,bacteria,archaea,and Protists: the Diversity of Life 1

Fungi: the Diversity of Life 2

Animals: the Diversity of Life 3

Plants: the Diversity of Life 4

The Angiosperms: Form and Function in Flowering Plants

Body Support and Movement: the Integumentary, skeletal, and Muscular Systems

Communication and Control 1: the Nervous System

Communication and Control 2: the Endocrine System

Defending the Body: the Immune System

Transport and Exchange 1: Blood and Breath

Transport and Exchange 2: Digestion, nutrition, and Elimination

An Amazingly Detailed Script: Animal Development

How the Baby Came to Be: Human Reproduction

An Interactive Living World 1: Populations in Ecology

An Interactive Living World 2: Communities in Ecology

An Interactive Living World 3: Ecosystems and Biomes

Filters

You work hard to pedal your bicycle up a steep hill.You rest when you get to the top,then you let your bicycle roll quickly down the other side of the hill.You converted energy into energy,then you converted it back into energy.

Kinetic energy is and potential energy is .