Question 1

A plant cell is mutated so ATP synthase no longer functions.Which process will be affected?

Accepted Answer

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

Question 2

In photosynthesis,the carbon used to make sugars is

Accepted Answer

A) provided by enzymes. 
B) provided by carbon dioxide. 
C) extracted from DNA. 
D) oxidized to make sugars. 
A) provided by enzymes. 
B) provided by carbon dioxide. 
C) extracted from DNA. 
D) oxidized to make sugars.

Question 3

A cell is found that is able to use sunlight to produce ATP,but it does not produce NADPH.The portion of the light reaction that is not functioning is ________.

Accepted Answer

The answer of A cell is found that is able...

Question 4

A mutation in a plant cell produces rubisco enzymes,which can only bind O₂ (and not CO₂).What would be the outcome of this mutation?

Accepted Answer

This plant would not be able t

Question 5

Excess carbon dioxide in the atmosphere is increasing climate change.How do photosynthesis and cellular respiration relate to this issue and how can we use this knowledge to help decrease this problem?

Accepted Answer

Photosynthesis takes in carbon

Question 6

The enzyme rubisco is important to the process of

Accepted Answer

A) catabolism. 
B) fermentation. 
C) glycolysis. 
D) carbon fixation. 
A) catabolism. 
B) fermentation. 
C) glycolysis. 
D) carbon fixation.

Question 7

The ________ of an enzyme is an area with a specialized shape and/or set of chemical properties that allows the enzyme to bind with a particular substrate.

Accepted Answer

The answer of The ________ of an enzyme is an...

Question 8

Cells contain the molecule GTP (guanosine triphosphate).Would this molecule be useful as an energy carrier (similar to ATP)?

Accepted Answer

A) No,because it does not contain the adenosine necessary for storing energy. 
B) No,because it contains fewer phosphates than ATP. 
C) Yes,because it contains a nitrogenous base just like ATP. 
D) Yes,because it contains the same number of phosphates as does ATP. 
A) No,because it does not contain the adenosine necessary for storing energy. 
B) No,because it contains fewer phosphates than ATP. 
C) Yes,because it contains a nitrogenous base just like ATP. 
D) Yes,because it contains the same number of phosphates as does ATP.

Question 9

The energy required for life processes must be extracted from an organism's

Accepted Answer

A) nucleus. 
B) environment. 
C) predators. 
D) biosynthesis. 
A) nucleus. 
B) environment. 
C) predators. 
D) biosynthesis.

Question 10

The image below diagrams the action of an enzyme.Notice that the enzyme is depicted as being more tightly wrapped around the substrates in step 2 than it is in step 1.Why is this?

Accepted Answer

A) When a substrate locks into the active site of an enzyme,the enzyme changes shape to mold itself around the substrates. 
B) Generally,the size of a substrate is larger than the size of the active site into which it must fit.When the substrate enters the active site,the active site must stretch to fit. 
C) Before catalysis can occur,a substrate must change its shape so that it fits into the active site of the enzyme more precisely. 
D) Most active sites are only designed to hold one substrate.In this image,two substrates enter the active site,creating a tighter fit. 
A) When a substrate locks into the active site of an enzyme,the enzyme changes shape to mold itself around the substrates. 
B) Generally,the size of a substrate is larger than the size of the active site into which it must fit.When the substrate enters the active site,the active site must stretch to fit. 
C) Before catalysis can occur,a substrate must change its shape so that it fits into the active site of the enzyme more precisely. 
D) Most active sites are only designed to hold one substrate.In this image,two substrates enter the active site,creating a tighter fit.

Question 11

Which of the following molecules carries electrons to the electron transport chain of oxidative phosphorylation?

Accepted Answer

A) ATP 
B) NADH 
C) CO₂ 
D) ADP 
A) ATP 
B) NADH 
C) CO₂ 
D) ADP

Question 12

MATCHING
For each characteristic below, state if it applies to photosynthesis and/or cellular respiration.
-produces sugars

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 13

As an energy carrier,ATP differs from NADPH in that

Accepted Answer

A) ATP transfers energy through phosphorylation,whereas NADPH donates electrons and hydrogen ions. 
B) ATP transfers energy through redox reactions,whereas NADPH uses phosphorylation. 
C) NADPH is involved in a larger variety of chemical reactions than ATP. 
D) NADPH is made by Photosystem I,whereas ATP is made by Photosystem II. 
A) ATP transfers energy through phosphorylation,whereas NADPH donates electrons and hydrogen ions. 
B) ATP transfers energy through redox reactions,whereas NADPH uses phosphorylation. 
C) NADPH is involved in a larger variety of chemical reactions than ATP. 
D) NADPH is made by Photosystem I,whereas ATP is made by Photosystem II.

Question 14

Photosynthesis and cellular respiration cycle the element ________ through the environment.When a plant does photosynthesis,it takes this element from the air and produces sugars.When animals conduct cellular respiration,they break down sugars and exhale a gas that contains this element.

Accepted Answer

The answer of Photosynthesis and cellular respiration cycle the element...

Question 15

The chemical 3-(3,4-dichloro-phenyl)-1,1-dimethylurea (DCMU)blocks the movement of electrons at the point indicated by the black,downward-pointing arrow in the figure below.Which of the following would be an immediate effect of treating a chloroplast with this drug?

Accepted Answer

A) Water molecules would be split at a faster rate than when the drug is not present. 
B) The amount of NADPH produced by the light reactions would increase. 
C) A proton gradient would not be created,so ATP could not be made. 
D) The production of water would increase. 
A) Water molecules would be split at a faster rate than when the drug is not present. 
B) The amount of NADPH produced by the light reactions would increase. 
C) A proton gradient would not be created,so ATP could not be made. 
D) The production of water would increase.

Question 16

Which of the following statements describe the function of the light reaction in photosynthesis?

Accepted Answer

A) As electrons move through the light reaction,they release energy that is used to concentrate protons in the thylakoid. 
B) As electrons move through the light reaction,they catalyze the formation of ATP. 
C) The light reaction releases CO₂ from glucose. 
D) The light reaction captures and stores the electrons given off by NADPH. 
A) As electrons move through the light reaction,they release energy that is used to concentrate protons in the thylakoid. 
B) As electrons move through the light reaction,they catalyze the formation of ATP. 
C) The light reaction releases CO₂ from glucose. 
D) The light reaction captures and stores the electrons given off by NADPH.

Question 17

MATCHING
For each characteristic below, state if it applies to photosynthesis and/or cellular respiration.
-used by plant 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 18

What is the role of water in photosynthesis?

Accepted Answer

A) Water provides a phosphate group to ATP. 
B) Water captures light energy and transfers it to the electron transport chain. 
C) Water provides electrons to the chlorophyll. 
D) Water combines with carbon dioxide (CO₂)to make glucose. 
A) Water provides a phosphate group to ATP. 
B) Water captures light energy and transfers it to the electron transport chain. 
C) Water provides electrons to the chlorophyll. 
D) Water combines with carbon dioxide (CO₂)to make glucose.

Question 19

Which of the following is either consumed or synthesized in virtually every cellular reaction?

Accepted Answer

A) sugars 
B) enzymes 
C) DNA 
D) ATP 
A) sugars 
B) enzymes 
C) DNA 
D) ATP

Question 20

Photosynthesis and cellular respiration are both complementary and relatively balanced,but early history of life on Earth showed increasing oxygen concentrations.This indicates that

Accepted Answer

A) both photosynthesis and respiration were occurring at approximately the same levels. 
B) neither photosynthesis nor respiration were occurring. 
C) the amount of photosynthesis occurring exceeded the amount of cellular respiration. 
D) the amount of cellular respiration occurring exceeded the amount of photosynthesis. 
A) both photosynthesis and respiration were occurring at approximately the same levels. 
B) neither photosynthesis nor respiration were occurring. 
C) the amount of photosynthesis occurring exceeded the amount of cellular respiration. 
D) the amount of cellular respiration occurring exceeded the amount of photosynthesis.

A plant cell is mutated so ATP synthase no longer functions.Which process will be affected?

In photosynthesis,the carbon used to make sugars is

A cell is found that is able to use sunlight to produce ATP,but it does not produce NADPH.The portion of the light reaction that is not functioning is ________.

A mutation in a plant cell produces rubisco enzymes,which can only bind O₂ (and not CO₂).What would be the outcome of this mutation?

Excess carbon dioxide in the atmosphere is increasing climate change.How do photosynthesis and cellular respiration relate to this issue and how can we use this knowledge to help decrease this problem?

The enzyme rubisco is important to the process of

The ________ of an enzyme is an area with a specialized shape and/or set of chemical properties that allows the enzyme to bind with a particular substrate.

Cells contain the molecule GTP (guanosine triphosphate).Would this molecule be useful as an energy carrier (similar to ATP)?

The energy required for life processes must be extracted from an organism's

The image below diagrams the action of an enzyme.Notice that the enzyme is depicted as being more tightly wrapped around the substrates in step 2 than it is in step 1.Why is this?

Which of the following molecules carries electrons to the electron transport chain of oxidative phosphorylation?

MATCHING For each characteristic below, state if it applies to photosynthesis and/or cellular respiration. -produces sugars

As an energy carrier,ATP differs from NADPH in that

Photosynthesis and cellular respiration cycle the element ________ through the environment.When a plant does photosynthesis,it takes this element from the air and produces sugars.When animals conduct cellular respiration,they break down sugars and exhale a gas that contains this element.

The chemical 3-(3,4-dichloro-phenyl)-1,1-dimethylurea (DCMU)blocks the movement of electrons at the point indicated by the black,downward-pointing arrow in the figure below.Which of the following would be an immediate effect of treating a chloroplast with this drug?

Which of the following statements describe the function of the light reaction in photosynthesis?

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

What is the role of water in photosynthesis?

Which of the following is either consumed or synthesized in virtually every cellular reaction?

Photosynthesis and cellular respiration are both complementary and relatively balanced,but early history of life on Earth showed increasing oxygen concentrations.This indicates that

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Exam 4: How Cells Work

A plant cell is mutated so ATP synthase no longer functions.Which process will be affected?

In photosynthesis,the carbon used to make sugars is

A cell is found that is able to use sunlight to produce ATP,but it does not produce NADPH.The portion of the light reaction that is not functioning is ________.

A mutation in a plant cell produces rubisco enzymes,which can only bind O₂ (and not CO₂).What would be the outcome of this mutation?

Excess carbon dioxide in the atmosphere is increasing climate change.How do photosynthesis and cellular respiration relate to this issue and how can we use this knowledge to help decrease this problem?

The enzyme rubisco is important to the process of

The ________ of an enzyme is an area with a specialized shape and/or set of chemical properties that allows the enzyme to bind with a particular substrate.

Cells contain the molecule GTP (guanosine triphosphate).Would this molecule be useful as an energy carrier (similar to ATP)?

The energy required for life processes must be extracted from an organism's

The image below diagrams the action of an enzyme.Notice that the enzyme is depicted as being more tightly wrapped around the substrates in step 2 than it is in step 1.Why is this?

Which of the following molecules carries electrons to the electron transport chain of oxidative phosphorylation?

MATCHING For each characteristic below, state if it applies to photosynthesis and/or cellular respiration. -produces sugars

As an energy carrier,ATP differs from NADPH in that

Photosynthesis and cellular respiration cycle the element ________ through the environment.When a plant does photosynthesis,it takes this element from the air and produces sugars.When animals conduct cellular respiration,they break down sugars and exhale a gas that contains this element.

The chemical 3-(3,4-dichloro-phenyl)-1,1-dimethylurea (DCMU)blocks the movement of electrons at the point indicated by the black,downward-pointing arrow in the figure below.Which of the following would be an immediate effect of treating a chloroplast with this drug?

Which of the following statements describe the function of the light reaction in photosynthesis?

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

What is the role of water in photosynthesis?

Which of the following is either consumed or synthesized in virtually every cellular reaction?

Photosynthesis and cellular respiration are both complementary and relatively balanced,but early history of life on Earth showed increasing oxygen concentrations.This indicates that

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

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