Question 1

MATCHING
For each characteristic below, state if it applies to photosynthesis and/or cellular respiration.
-used by animal cells

Accepted Answer

A) photosynthesis only 
B) cellular respiration only 
C) both photosynthesis and cellular respiration 
D) neither photosynthesis nor cellular respiration 
A) photosynthesis only 
B) cellular respiration only 
C) both photosynthesis and cellular respiration 
D) neither photosynthesis nor cellular respiration

Question 2

The capture and use of energy by living organisms involves numerous chemical reactions.Collectively these processes are known as

Accepted Answer

A) metabolism. 
B) respiration. 
C) anabolic reactions. 
D) catabolic reactions. 
A) metabolism. 
B) respiration. 
C) anabolic reactions. 
D) catabolic reactions.

Question 3

The energy carriers NADPH and NADH differ structurally.Functionally they

Accepted Answer

A) are quite similar;each is produced in catabolic pathways and is used in anabolic pathways. 
B) are quite similar;each is produced in anabolic pathways and is used in catabolic pathways. 
C) are somewhat different;NADPH is produced from catabolic processes,whereas NADH is used in anabolic processes. 
D) are somewhat different;NADH is produced from catabolic processes,whereas NADPH is used in anabolic processes. 
A) are quite similar;each is produced in catabolic pathways and is used in anabolic pathways. 
B) are quite similar;each is produced in anabolic pathways and is used in catabolic pathways. 
C) are somewhat different;NADPH is produced from catabolic processes,whereas NADH is used in anabolic processes. 
D) are somewhat different;NADH is produced from catabolic processes,whereas NADPH is used in anabolic processes.

Question 4

In the reaction C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O,the 6 CO₂ molecules are some of the

Accepted Answer

A) substrates. 
B) products. 
C) enzymes. 
D) reactants 
A) substrates. 
B) products. 
C) enzymes. 
D) reactants

Question 5

When ATP breaks down into ADP and a phosphate group,

Accepted Answer

A) energy is absorbed by ADP and transferred to enzymes. 
B) energy is released and can power cellular activities. 
C) ADP becomes the active site in an enzyme. 
D) the energy in the broken bond is transferred to the phosphate group. 
A) energy is absorbed by ADP and transferred to enzymes. 
B) energy is released and can power cellular activities. 
C) ADP becomes the active site in an enzyme. 
D) the energy in the broken bond is transferred to the phosphate group.

Question 6

What should the arrow in the following equation be labeled? 
Sugar + oxygen → carbon dioxide + water + ATP.

Accepted Answer

A) photosynthesis 
B) cellular respiration 
C) Krebs cycle 
D) Calvin cycle 
A) photosynthesis 
B) cellular respiration 
C) Krebs cycle 
D) Calvin cycle

Question 7

Cells would not be able to survive unless anabolic and catabolic processes occurred in linked reactions.Support or refute this statement.

Accepted Answer

This statement is true because

Question 8

The first law of thermodynamics states that

Accepted Answer

A) metabolic reactions must be balanced. 
B) the flow of energy connects living things to their environments. 
C) energy cannot be created nor destroyed. 
D) systems tend to become more disorderly. 
A) metabolic reactions must be balanced. 
B) the flow of energy connects living things to their environments. 
C) energy cannot be created nor destroyed. 
D) systems tend to become more disorderly.

Question 9

In many organelles,groups of different enzymes are located on membranes in close proximity to each other because

Accepted Answer

A) attaching enzymes to the membrane prevents the cell from losing them to the surrounding environment. 
B) when enzymes are in close proximity,each one can catalyze more than one type of reaction. 
C) these enzymes are involved in the same metabolic pathway and keeping them closer together increases the efficiency of the pathway. 
D) all enzymes must act in groups to position substrates in the proper orientation to produce the product. 
A) attaching enzymes to the membrane prevents the cell from losing them to the surrounding environment. 
B) when enzymes are in close proximity,each one can catalyze more than one type of reaction. 
C) these enzymes are involved in the same metabolic pathway and keeping them closer together increases the efficiency of the pathway. 
D) all enzymes must act in groups to position substrates in the proper orientation to produce the product.

Question 10

A new bacterial cell is found that is able to grow without food as long as sunlight is available.This cell likely uses ________ to produce its own food.

Accepted Answer

The answer of A new bacterial cell is found that...

Question 11

Which of the following is a similarity between photosynthesis and respiration?

Accepted Answer

A) Neither is a metabolic process. 
B) They are both metabolic processes. 
C) Neither is an anabolic process. 
D) They are both mainly anabolic processes. 
A) Neither is a metabolic process. 
B) They are both metabolic processes. 
C) Neither is an anabolic process. 
D) They are both mainly anabolic processes.

Question 12

Photosynthetic organisms capture energy from sunlight and convert it into chemical bonds by forming

Accepted Answer

A) sugars. 
B) enzymes. 
C) work. 
D) substrates. 
A) sugars. 
B) enzymes. 
C) work. 
D) substrates.

Question 13

The Krebs cycle produces

Accepted Answer

A) NADH,ATP,and FADH2. 
B) water and carbon dioxide. 
C) ADP and NADP+. 
D) acetyl CoA and sugars. 
A) NADH,ATP,and FADH2. 
B) water and carbon dioxide. 
C) ADP and NADP+. 
D) acetyl CoA and sugars.

Question 14

In a human cell,

Accepted Answer

A) one enzyme usually catalyzes no more than five different chemical reactions. 
B) nearly all chemical reactions are catalyzed by enzymes. 
C) enzymes have to be constantly replaced as they are used up in the reactions that they catalyze. 
D) some enzymes are specialized to store activation energy. 
A) one enzyme usually catalyzes no more than five different chemical reactions. 
B) nearly all chemical reactions are catalyzed by enzymes. 
C) enzymes have to be constantly replaced as they are used up in the reactions that they catalyze. 
D) some enzymes are specialized to store activation energy.

Question 15

A hypothetical chemical forms a permanent bond between the phosphates in ATP.How would this affect the cell?

Accepted Answer

The cell would not be able to

Question 16

________ reactions release energy by breaking down complex molecules.

Accepted Answer

A) Catabolic 
B) Anabolic 
C) Photosynthetic 
D) Respiration 
A) Catabolic 
B) Anabolic 
C) Photosynthetic 
D) Respiration

Question 17

Enzymes can catalyze a reaction only if

Accepted Answer

A) they encounter a molecule of ATP. 
B) their active site is sufficiently oxidized. 
C) they have both products in their active site at the same time. 
D) they encounter a substrate that fits their active site. 
A) they encounter a molecule of ATP. 
B) their active site is sufficiently oxidized. 
C) they have both products in their active site at the same time. 
D) they encounter a substrate that fits their active site.

Question 18

A chemical reaction that uses ATP to build cellular components is

Accepted Answer

A) catabolic. 
B) anabolic. 
C) photosynthetic. 
D) respiration. 
A) catabolic. 
B) anabolic. 
C) photosynthetic. 
D) respiration.

Question 19

A given enzyme

Accepted Answer

A) can be used for many different kinds of chemical reactions. 
B) is permanently changed during a chemical reaction. 
C) has a special site where the products bind before the reaction begins. 
D) increases the rate of a particular reaction. 
A) can be used for many different kinds of chemical reactions. 
B) is permanently changed during a chemical reaction. 
C) has a special site where the products bind before the reaction begins. 
D) increases the rate of a particular reaction.

Question 20

The three stages of cellular respiration (in order)are

Accepted Answer

A) photosynthesis,glycolysis,and oxidative phosphorylation. 
B) glycolysis,the Krebs cycle,and oxidative phosphorylation. 
C) glycolysis,fermentation,and the Krebs cycle. 
D) photosynthesis,the Krebs cycle,and fermentation. 
A) photosynthesis,glycolysis,and oxidative phosphorylation. 
B) glycolysis,the Krebs cycle,and oxidative phosphorylation. 
C) glycolysis,fermentation,and the Krebs cycle. 
D) photosynthesis,the Krebs cycle,and fermentation.

MATCHING For each characteristic below, state if it applies to photosynthesis and/or cellular respiration. -used by animal cells

The capture and use of energy by living organisms involves numerous chemical reactions.Collectively these processes are known as

The energy carriers NADPH and NADH differ structurally.Functionally they

In the reaction C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O,the 6 CO₂ molecules are some of the

When ATP breaks down into ADP and a phosphate group,

What should the arrow in the following equation be labeled? Sugar + oxygen → carbon dioxide + water + ATP.

Cells would not be able to survive unless anabolic and catabolic processes occurred in linked reactions.Support or refute this statement.

The first law of thermodynamics states that

In many organelles,groups of different enzymes are located on membranes in close proximity to each other because

A new bacterial cell is found that is able to grow without food as long as sunlight is available.This cell likely uses ________ to produce its own food.

Which of the following is a similarity between photosynthesis and respiration?

Photosynthetic organisms capture energy from sunlight and convert it into chemical bonds by forming

The Krebs cycle produces

In a human cell,

A hypothetical chemical forms a permanent bond between the phosphates in ATP.How would this affect the cell?

________ reactions release energy by breaking down complex molecules.

Enzymes can catalyze a reaction only if

A chemical reaction that uses ATP to build cellular components is

A given enzyme

The three stages of cellular respiration (in order)are

The Nature of Science

Chemistry of Life

Life Is Cellular

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Ecosystems

Applying the Science

Filters

Exam 4: How Cells Work

MATCHING For each characteristic below, state if it applies to photosynthesis and/or cellular respiration. -used by animal cells

The capture and use of energy by living organisms involves numerous chemical reactions.Collectively these processes are known as

The energy carriers NADPH and NADH differ structurally.Functionally they

In the reaction C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O,the 6 CO₂ molecules are some of the

When ATP breaks down into ADP and a phosphate group,

What should the arrow in the following equation be labeled? Sugar + oxygen → carbon dioxide + water + ATP.

Cells would not be able to survive unless anabolic and catabolic processes occurred in linked reactions.Support or refute this statement.

The first law of thermodynamics states that

In many organelles,groups of different enzymes are located on membranes in close proximity to each other because

A new bacterial cell is found that is able to grow without food as long as sunlight is available.This cell likely uses ________ to produce its own food.

Which of the following is a similarity between photosynthesis and respiration?

Photosynthetic organisms capture energy from sunlight and convert it into chemical bonds by forming

The Krebs cycle produces

In a human cell,

A hypothetical chemical forms a permanent bond between the phosphates in ATP.How would this affect the cell?

________ reactions release energy by breaking down complex molecules.

Enzymes can catalyze a reaction only if

A chemical reaction that uses ATP to build cellular components is

A given enzyme

The three stages of cellular respiration (in order)are

The Nature of Science

Chemistry of Life

Life Is Cellular

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Ecosystems

Applying the Science

Filters