Question 1

Which of the following molecules is an enzyme?

Accepted Answer

A)  lipase 
B)  maltose 
C)  uric acid 
D)  lactose 
E)  DNA 
A)  lipase 
B)  maltose 
C)  uric acid 
D)  lactose 
E)  DNA A

Question 2

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. 
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. A

Question 3

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

Accepted Answer

A)  carbon dioxide 
B)  water 
C)  oxygen 
D)  glucose 
E)  energy 
A)  carbon dioxide 
B)  water 
C)  oxygen 
D)  glucose 
E)  energy C

Question 4

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. 
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.

Question 5

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 6

Ultimately, humans get their energy from the sun.

Accepted Answer

A) True 
 B)False

Question 7

Poisons are often

Accepted Answer

A)  enzyme inhibitors. 
B)  cofactors. 
C)  coenzymes. 
D)  vitamins. 
E)  kinases. 
A)  enzyme inhibitors. 
B)  cofactors. 
C)  coenzymes. 
D)  vitamins. 
E)  kinases.

Question 8

Where within the cell is the majority of ATP produced?

Accepted Answer

A)  mitochondria 
B)  cytoplasm 
C)  nucleus 
D)  endoplasmic reticulum 
E)  Golgi body 
A)  mitochondria 
B)  cytoplasm 
C)  nucleus 
D)  endoplasmic reticulum 
E)  Golgi body

Question 9

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. 
A)  the adenine base. 
B)  the adenine and the ribose. 
C)  the ribose sugar. 
D)  the adenine and the phosphates. 
E)  the phosphate groups.

Question 10

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. 
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.

Question 11

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

Accepted Answer

A) True 
 B)False

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 + energy 
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 + energy

Question 13

Define the first law of thermodynamics.

Accepted Answer

The first law of thermodynamic

Question 14

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. 
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.

Question 15

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

Question 16

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. 
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.

Question 17

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. 
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.

Question 18

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

Question 19

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 20

Enzymes maintain their shape when they bind to a substrate.

Accepted Answer

A) True 
 B)False

Exam 6: Metabolism: Energy and Enzymes

Which of the following molecules is an enzyme?

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

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

Which statement most accurately describes the second law of thermodynamics?

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

Ultimately, humans get their energy from the sun.

Poisons are often

Where within the cell is the majority of ATP produced?

The high energy bond in ATP is found in or between

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

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

What is the equation for photosynthesis?

Define the first law of thermodynamics.

The metabolic pathways of photosynthesis and cellular respiration

The various uses of ATP include

Which is true about energy of activation?

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

Chemical reactions that require the input of energy are

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

Enzymes maintain their shape when they bind to a substrate.

The Study of Life

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Patterns of Gene Inheritance

Chromosomal Basis of Inheritance

Dna Structure and Gene Expression

Biotechnology and Genomics

Evolution of Life

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