Question 1

Which of the following is a by-product of photosynthesis?

Accepted Answer

A)   carbon dioxide
B)   water
C)   oxygen
D)   glucose
E)   energyF) C) and E)
G) C) and D) C

Question 2

Ultimately, humans get their energy from the sun.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following is a correct statement about the second law of thermodynamics and entropy?

Accepted Answer

A)   The amount of disorder in the universe is always increasing.
B)   To maintain organization of a cell, a continual output of energy is required.
C)   Living cells without energy would become more organized.
D)   Energy lost as heat is more useful to the cell in doing work.
E)   Carbon dioxide and water form glucose without the input of energy.F) A) and C)
G) C) and D)

Question 4

Which hypothesis, based on the two laws of thermodynamics as applied to cells, would determine if something is a living cell or not?

Accepted Answer

A)   If something uses energy to make itself more organized, then it is alive.
B)   If something is organized, then it is alive.
C)   If something moves, then it is alive.
D)   If something loses heat, then it is alive.
E)   If something uses energy to move, then it is alive.F) A) and B)
G) None of the above A

Question 5

Which is true about energy of activation?

Accepted Answer

A)   Energy of activation is measured as the energy that is released after a reaction occurs.
B)   Adding the correct enzyme can lower the energy of activation.
C)   In any one metabolic pathway, all steps will have the same energy of activation.
D)   Energy of activation is the difference between the energy of the reactant and the energy of the product.
E)   The energy of activation is always lower than the energy of the reactant.F) C) and E)
G) D) and E)

Question 6

Since enzymes are not used up during a reaction, they do not play any role in the reaction.

Accepted Answer

A) True 
 B)False

Question 7

When a kinase adds phosphates to an enzyme, it will only activate the enzyme.

Accepted Answer

A) True 
 B)False

Question 8

The various uses of ATP include

Accepted Answer

A)   chemical work.
B)   mechanical work.
C)   transport work.
D)   moving substances into a cell.
E)   All of the answer choices are correct.F) A) and E)
G) C) and D)

Question 9

Define the first law of thermodynamics.

Accepted Answer

The first law of thermodynamic...

Question 10

The metabolic pathways of photosynthesis and cellular respiration

Accepted Answer

A)   involve the same substrates and therefore the same enzymes.
B)   are exactly the same.
C)   involve oxidation reactions during photosynthesis and reduction reactions during respiration.
D)   involve oxidation reactions during respiration and reduction reactions during photosynthesis.
E)   both involve oxidation and reduction reactions.F) A) and E)
G) B) and E)

Question 11

The high energy bond in ATP is found in or between

Accepted Answer

A)   the adenine base.
B)   the adenine and the ribose.
C)   the ribose sugar.
D)   the adenine and the phosphates.
E)   the phosphate groups.F) A) and D)
G) All of the above

Question 12

What is the equation for photosynthesis?

Accepted Answer

A)   C6H12O6 + 6O2 → 6CO2 + 6H2O + energy
B)   energy + 6CO2 + 6H2O → C6H12O6 → 6CO2 + 6H2O
C)   energy + C6H12O6 → 6CO2 + 6H2O
D)   energy + 6CO2 + 6H2O → C6H12O6 + 6O2
E)   C6H12O6 + 6CO2 → 6O2 + 6H2O + energyF) A) and E)
G) C) and E)

Question 13

Where within the cell is the majority of ATP produced?

Accepted Answer

A)   mitochondria
B)   cytoplasm
C)   nucleus
D)   endoplasmic reticulum
E)   Golgi bodyF) A) and E)
G) D) and E)

Question 14

Enzymes maintain their shape when they bind to a substrate.

Accepted Answer

A) True 
 B)False

Question 15

Which statement most accurately describes the second law of thermodynamics?

Accepted Answer

A)   Energy cannot be changed from one form to another without a loss of usable energy.
B)   One usable form of energy can be completely converted into another usable form.
C)   Energy cannot be created nor destroyed but it can be changed from one form to another.
D)   Energy cannot be created or destroyed.
E)   Energy can be created or destroyed but it cannot be transformed.F) A) and B)
G) A) and E)

Question 16

Which of the following molecules is an enzyme?

Accepted Answer

A)   lipase
B)   maltose
C)   uric acid
D)   lactose
E)   DNAF) B) and C)
G) A) and D) A

Question 17

Poisons are often

Accepted Answer

A)   enzyme inhibitors.
B)   cofactors.
C)   coenzymes.
D)   vitamins.
E)   kinases.F) None of the above
G) B) and E)

Question 18

When glucose is broken down during cellular respiration, all of the free energy of glucose is transformed into ATP.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following statements most accurately describes the first law of thermodynamics?

Accepted Answer

A)   One usable form of energy cannot be completely converted into another usable form.
B)   One usable form of energy can be completely converted into another usable form.
C)   Energy can be created or destroyed but not changed from one form to another.
D)   Energy cannot be created or destroyed but it can be changed from one form to another.
E)   Energy cannot be transformed.F) C) and D)
G) All of the above

Question 20

Chemical reactions that require the input of energy are

Accepted Answer

A)   exergonic reactions.
B)   endergonic reactions.
C)   coupled reactions.
D)   kinetic reactions.
E)   catabolic reactions.F) B) and C)
G) A) and B)

Exam 6: Metabolism: Energy and Enzymes

Which of the following is a by-product of photosynthesis?

Correct AnswerverifiedC

Ultimately, humans get their energy from the sun.

Correct AnswerverifiedShow Answer

Which of the following is a correct statement about the second law of thermodynamics and entropy?

Correct AnswerverifiedShow Answer

Which hypothesis, based on the two laws of thermodynamics as applied to cells, would determine if something is a living cell or not?

Correct AnswerverifiedA

Which is true about energy of activation?

Correct AnswerverifiedShow Answer

Since enzymes are not used up during a reaction, they do not play any role in the reaction.

Correct AnswerverifiedShow Answer

When a kinase adds phosphates to an enzyme, it will only activate the enzyme.

Correct AnswerverifiedShow Answer

The various uses of ATP include

Correct AnswerverifiedShow Answer

Define the first law of thermodynamics.

Correct AnswerverifiedThe first law of thermodynamic...View AnswerShow Answer

The metabolic pathways of photosynthesis and cellular respiration

Correct AnswerverifiedShow Answer

The high energy bond in ATP is found in or between

Correct AnswerverifiedShow Answer

What is the equation for photosynthesis?

Correct AnswerverifiedShow Answer

Where within the cell is the majority of ATP produced?

Correct AnswerverifiedShow Answer

Enzymes maintain their shape when they bind to a substrate.

Correct AnswerverifiedShow Answer

Which statement most accurately describes the second law of thermodynamics?

Correct AnswerverifiedShow Answer

Which of the following molecules is an enzyme?

Correct AnswerverifiedA

Poisons are often

Correct AnswerverifiedShow Answer

When glucose is broken down during cellular respiration, all of the free energy of glucose is transformed into ATP.

Correct AnswerverifiedShow Answer

Which of the following statements most accurately describes the first law of thermodynamics?

Correct AnswerverifiedShow Answer

Chemical reactions that require the input of energy are

Correct AnswerverifiedShow Answer

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The first law of thermodynamic...
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A

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