Question 1

When the stomata are closed, ____.

Accepted Answer

A)  O2 levels decline 
B)  CO2 levels decline 
C)  CO2 levels increase 
D)  efficiency of sugar production increases 
E)  PGAL increases 
A)  O2 levels decline 
B)  CO2 levels decline 
C)  CO2 levels increase 
D)  efficiency of sugar production increases 
E)  PGAL increases B

Question 2

Match between columns
                        Premises: the first part of the Calvin-Benson cycle
a process that uses oxygen
electron transfer chains that drive the formation of ATP
a process resulting in the formation of ATP and NADH
the conversion of inorganic carbon to organic compounds

Accepted Answer

The Answer of electron transfer phosphorylation and Calvin-Benson cycle and is...

Question 3

What powers the ATP synthase enzyme in the light-dependent reactions of photosynthesis?

Accepted Answer

A)  energy from ATP 
B)  energy from NADPH 
C)  energy from the splitting of water 
D)  energy from electron transfer chains 
E)  energy from the flow of hydrogen ions 
A)  energy from ATP 
B)  energy from NADPH 
C)  energy from the splitting of water 
D)  energy from electron transfer chains 
E)  energy from the flow of hydrogen ions E

Question 4

In light-dependent reactions, hydrogen ions are transported into the thylakoid membrane. What drives the movement of these ions?

Accepted Answer

A)  passive diffusion of ions from high to low concentration 
B)  passive diffusion of ions from low to high concentration 
C)  active transport of ions driven by the hydrolysis of water into oxygen 
D)  active transport of ions driven by energy from the electron transport chain 
E)  active transport through the enzyme ATP synthase 
A)  passive diffusion of ions from high to low concentration 
B)  passive diffusion of ions from low to high concentration 
C)  active transport of ions driven by the hydrolysis of water into oxygen 
D)  active transport of ions driven by energy from the electron transport chain 
E)  active transport through the enzyme ATP synthase

Question 5

Chlorophyll a molecules absorb ____ light.

Accepted Answer

A)  orange, green, and yellow 
B)  orange, purple, and red 
C)  red and yellow 
D)  orange and blue 
E)  purple, orange, and yellow 
A)  orange, green, and yellow 
B)  orange, purple, and red 
C)  red and yellow 
D)  orange and blue 
E)  purple, orange, and yellow

Question 6

The purpose of a photosystem is to convert ____.

Accepted Answer

A)  light energy into chemical energy 
B)  carbon dioxide into sugar 
C)  light energy into sugar 
D)  oxygen into carbon dioxide 
E)  light into oxygen 
A)  light energy into chemical energy 
B)  carbon dioxide into sugar 
C)  light energy into sugar 
D)  oxygen into carbon dioxide 
E)  light into oxygen

Question 7

Match between columns
                        Premises: Which process leads to the formation of glucose?
Water is split in which process?
Which process is catalyzed by an enzyme called rubisco?
Which process utilizes sunlight to make sugars?
Electron transfer drives ATP formation in which process?

Accepted Answer

The Answer of l ight-independent reactions and electron transfer phosphorylation is...

Question 8

In a noncyclic pathway, photosystem II takes electrons from ___ in the thylakoid compartment.

Accepted Answer

A)  oxygen 
B)  water 
C)  carbon dioxide 
D)  ethanol 
E)  hydrogen 
A)  oxygen 
B)  water 
C)  carbon dioxide 
D)  ethanol 
E)  hydrogen

Question 9

In the light-dependent reactions of photosynthesis, how do hydrogen ions get back into the stroma?

Accepted Answer

A)  passive diffusion directly across the thylakoid membrane 
B)  active transport across the thylakoid membrane 
C)  facilitated diffusion across the thylakoid membrane 
D)  active transport through ATP synthase 
E)  passive diffusion through ATP synthase 
A)  passive diffusion directly across the thylakoid membrane 
B)  active transport across the thylakoid membrane 
C)  facilitated diffusion across the thylakoid membrane 
D)  active transport through ATP synthase 
E)  passive diffusion through ATP synthase

Question 10

Early organisms were anaerobic. As early organisms evolved the ability to harness energy from the sun, other organisms began to die out because they were ____.

Accepted Answer

A)  destroyed by a meteorite 
B)  outcompeted by multicelled organisms 
C)  consumed by dinosaurs 
D)  poisoned by oxygen gas 
E)  starved 
A)  destroyed by a meteorite 
B)  outcompeted by multicelled organisms 
C)  consumed by dinosaurs 
D)  poisoned by oxygen gas 
E)  starved

Question 11

Which of the following is the correct order of wavelengths from lowest to highest energy?

Accepted Answer

A)  radio waves, microwaves, ultraviolet radiation, X-rays, gamma rays 
B)  gamma rays, X-rays, ultraviolet radiation, microwaves, radio waves 
C)  radio waves, ultraviolet radiation, microwaves, X-rays, gamma rays 
D)  gamma rays, ultraviolet radiation, X-rays, microwaves, radio waves 
E)  radio waves, ultraviolet radiation, X-rays, gamma rays, microwaves 
A)  radio waves, microwaves, ultraviolet radiation, X-rays, gamma rays 
B)  gamma rays, X-rays, ultraviolet radiation, microwaves, radio waves 
C)  radio waves, ultraviolet radiation, microwaves, X-rays, gamma rays 
D)  gamma rays, ultraviolet radiation, X-rays, microwaves, radio waves 
E)  radio waves, ultraviolet radiation, X-rays, gamma rays, microwaves

Question 12

The primary purpose of splitting the water in the light-dependent reactions of photosynthesis is to ____.

Accepted Answer

A)  release oxygen for aerobic respiration 
B)  generate ATP 
C)  generate NADH 
D)  actively transfer hydrogen ions across the thylakoid membrane 
E)  release electrons for electron transport phosphorylation 
A)  release oxygen for aerobic respiration 
B)  generate ATP 
C)  generate NADH 
D)  actively transfer hydrogen ions across the thylakoid membrane 
E)  release electrons for electron transport phosphorylation

Question 13

In the thylakoid membrane, photosynthetic pigments are held together by ____.

Accepted Answer

A)  enzymes 
B)  energy 
C)  proteins 
D)  chlorophyll 
E)  electrons 
A)  enzymes 
B)  energy 
C)  proteins 
D)  chlorophyll 
E)  electrons

Question 14

The enzyme that fixes carbon dioxide into the Calvin-Benson cycle is ____.

Accepted Answer

A)  rubisco 
B)  carbon dioxide oxidase 
C)  ATP synthase 
D)  carbon hydrogenase 
E)  RuBP 
A)  rubisco 
B)  carbon dioxide oxidase 
C)  ATP synthase 
D)  carbon hydrogenase 
E)  RuBP

Question 15

Photosynthesis converts the energy of light into ____.

Accepted Answer

A)  pigments 
B)  chemical bond energy 
C)  proteins 
D)  electrons and protons 
E)  heat energy 
A)  pigments 
B)  chemical bond energy 
C)  proteins 
D)  electrons and protons 
E)  heat energy

Question 16

In which cellular organelle does photosynthesis take place?

Accepted Answer

A)  rough endoplasmic reticulum 
B)  Golgi bodies 
C)  mitochondria 
D)  chloroplasts 
E)  lysosome 
A)  rough endoplasmic reticulum 
B)  Golgi bodies 
C)  mitochondria 
D)  chloroplasts 
E)  lysosome

Question 17

Most of the colors we see around us result from ____.

Accepted Answer

A)  reflected light 
B)  direct sunlight 
C)  absorbed light 
D)  the inherent color of the objects we are looking at 
E)  a combination of absorbed and reflected light 
A)  reflected light 
B)  direct sunlight 
C)  absorbed light 
D)  the inherent color of the objects we are looking at 
E)  a combination of absorbed and reflected light

Question 18

The conversion of solar energy into chemical energy occurs during ____.

Accepted Answer

A)  glycolysis 
B)  photosynthesis 
C)  respiration 
D)  fermentation 
E)  chemosynthesis 
A)  glycolysis 
B)  photosynthesis 
C)  respiration 
D)  fermentation 
E)  chemosynthesis

Question 19

The main producer(s) for the human food chain is/are ____.

Accepted Answer

A)  farmers 
B)  light 
C)  plants 
D)  cows 
E)  methane 
A)  farmers 
B)  light 
C)  plants 
D)  cows 
E)  methane

Question 20

In a noncyclic pathway, ____ provides replacement electrons for photosystem I.

Accepted Answer

A)  oxygen 
B)  photosystem II 
C)  carbon dioxide 
D)  water 
E)  hydrogen 
A)  oxygen 
B)  photosystem II 
C)  carbon dioxide 
D)  water 
E)  hydrogen

Exam 5: Photosynthesis

When the stomata are closed, ____.

What powers the ATP synthase enzyme in the light-dependent reactions of photosynthesis?

In light-dependent reactions, hydrogen ions are transported into the thylakoid membrane. What drives the movement of these ions?

Chlorophyll a molecules absorb ____ light.

The purpose of a photosystem is to convert ____.

In a noncyclic pathway, photosystem II takes electrons from ___ in the thylakoid compartment.

In the light-dependent reactions of photosynthesis, how do hydrogen ions get back into the stroma?

Early organisms were anaerobic. As early organisms evolved the ability to harness energy from the sun, other organisms began to die out because they were ____.

Which of the following is the correct order of wavelengths from lowest to highest energy?

The primary purpose of splitting the water in the light-dependent reactions of photosynthesis is to ____.

In the thylakoid membrane, photosynthetic pigments are held together by ____.

The enzyme that fixes carbon dioxide into the Calvin-Benson cycle is ____.

Photosynthesis converts the energy of light into ____.

In which cellular organelle does photosynthesis take place?

Most of the colors we see around us result from ____.

The conversion of solar energy into chemical energy occurs during ____.

The main producer(s) for the human food chain is/are ____.

In a noncyclic pathway, ____ provides replacement electrons for photosystem I.

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Releasing Chemical Energy

Dna Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Prokaryotes, Protists, and Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Animal Reproduction and Development

Plant Form and Function

Life Cycles of Flowering Plants

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