Question 1

The addition of oxygen instead of carbon dioxide to RuBP results in

Accepted Answer

A)  cellular respiration. 
B)  photorespiration. 
C)  photophosphorylation. 
D)  aerobic respiration. 
A)  cellular respiration. 
B)  photorespiration. 
C)  photophosphorylation. 
D)  aerobic respiration. B

Question 2

Mitochondria transfer ________ energy from ________ to ATP; chloroplasts transform ________ energy into the chemical energy of ATP.

Accepted Answer

A)  chemical; food; light 
B)  food; light; chemical 
C)  light; food; kinetic 
D)  food; light; nuclear 
A)  chemical; food; light 
B)  food; light; chemical 
C)  light; food; kinetic 
D)  food; light; nuclear A

Question 3

Which of the following molecules is a reactant of photosynthesis?

Accepted Answer

A)  CO2 
B)  glucose 
C)  O2 
D)  chlorophyll 
A)  CO2 
B)  glucose 
C)  O2 
D)  chlorophyll A

Question 4

Which of the following is part of the light reaction?

Accepted Answer

A)  carbon fixation 
B)  reduction of carbon 
C)  regeneration of NADP+ 
D)  formation of waste products in the form of O2 
A)  carbon fixation 
B)  reduction of carbon 
C)  regeneration of NADP+ 
D)  formation of waste products in the form of O2

Question 5

What is the source of energy that provides the boost for electrons during photosynthesis?

Accepted Answer

A)  light 
B)  NADPH 
C)  cellular respiration 
D)  ATP 
A)  light 
B)  NADPH 
C)  cellular respiration 
D)  ATP

Question 6

Plant cells

Accepted Answer

A)  lack mitochondria and chloroplasts. 
B)  lack mitochondria but have chloroplasts. 
C)  have mitochondria but do not have chloroplasts. 
D)  have mitochondria and chloroplasts. 
A)  lack mitochondria and chloroplasts. 
B)  lack mitochondria but have chloroplasts. 
C)  have mitochondria but do not have chloroplasts. 
D)  have mitochondria and chloroplasts.

Question 7

Purple sulfur bacteria are organisms capable of photosynthesis. They get their name, in part, because they use H2S (hydrogen sulfide) instead of water during the light reactions. In what form would you expect to find sulfur (S) as a result of photosynthesis in these bacteria?

Accepted Answer

A)  S2 
B)  SO2 
C)  CS2 
D)  C6H12S6 
A)  S2 
B)  SO2 
C)  CS2 
D)  C6H12S6

Question 8

Thylakoids are arranged in stacks called

Accepted Answer

A)  cristae. 
B)  stomata. 
C)  grana. 
D)  vacuoles. 
A)  cristae. 
B)  stomata. 
C)  grana. 
D)  vacuoles.

Question 9

In photophosphorylation, energy from electron flow is used to transport ________ from the ________ to the thylakoid compartment, generating a concentration gradient of ________.

Accepted Answer

A)  electrons; grana; H+ 
B)  H+; grana; electrons 
C)  H+; stroma; H+ 
D)  H+; stroma; ATP 
A)  electrons; grana; H+ 
B)  H+; grana; electrons 
C)  H+; stroma; H+ 
D)  H+; stroma; ATP

Question 10

The graph shows records of temperature (light gray line) and COS1U1B12S1U1B0 (dark gray line) over the past 1,000 years. COS1U1B12S1U1B0 is recorded in parts per million (ppm).
-If you focus on the data from the mid-1900s (indicated by the arrow) through today, the graph shows that

Accepted Answer

A)  there is a correlation between CO2 and temperature; when CO2 levels are high, so is temperature. 
B)  there is a correlation between CO2 and temperature; when CO2 levels are high, temperature is low. 
C)  there is no correlation between CO2 and temperature; CO2 fluctuates randomly and temperature is constant. 
D)  there is no correlation between CO2 and temperature; CO2 is constant and temperature fluctuates randomly. 
A)  there is a correlation between CO2 and temperature; when CO2 levels are high, so is temperature. 
B)  there is a correlation between CO2 and temperature; when CO2 levels are high, temperature is low. 
C)  there is no correlation between CO2 and temperature; CO2 fluctuates randomly and temperature is constant. 
D)  there is no correlation between CO2 and temperature; CO2 is constant and temperature fluctuates randomly.

Question 11

Sunlight is a type of ________ energy.

Accepted Answer

A)  electromagnetic 
B)  chemical 
C)  mechanical 
A)  electromagnetic 
B)  chemical 
C)  mechanical

Question 12

Plant cells are protected from the harmful effects of excessive light energy and reactive oxidative molecules by

Accepted Answer

A)  mitochondria. 
B)  chlorophyll. 
C)  carotenoids. 
D)  ATP. 
A)  mitochondria. 
B)  chlorophyll. 
C)  carotenoids. 
D)  ATP.

Question 13

Global warming due to the greenhouse effect may be

Accepted Answer

A)  moderated by photosynthesis, which removes carbon dioxide from the atmosphere. 
B)  made worse by photosynthesis, which adds carbon dioxide to the atmosphere. 
C)  reduced by the burning of fossil fuels, which removes oxygen from the atmosphere. 
D)  of little concern, since it is part of the normal cycle for the planet. 
A)  moderated by photosynthesis, which removes carbon dioxide from the atmosphere. 
B)  made worse by photosynthesis, which adds carbon dioxide to the atmosphere. 
C)  reduced by the burning of fossil fuels, which removes oxygen from the atmosphere. 
D)  of little concern, since it is part of the normal cycle for the planet.

Question 14

What is the likely origin of chloroplasts?

Accepted Answer

A)  mitochondria that had a mutation for photosynthesis 
B)  photosynthetic prokaryotes that lived inside eukaryotic cells 
C)  prokaryotes with photosynthetic mitochondria 
D)  eukaryotes that engulfed photosynthetic fungi 
A)  mitochondria that had a mutation for photosynthesis 
B)  photosynthetic prokaryotes that lived inside eukaryotic cells 
C)  prokaryotes with photosynthetic mitochondria 
D)  eukaryotes that engulfed photosynthetic fungi

Question 15

CO2 enters and O2 escapes from a leaf via

Accepted Answer

A)  stomata. 
B)  thylakoids. 
C)  grana. 
D)  stroma. 
A)  stomata. 
B)  thylakoids. 
C)  grana. 
D)  stroma.

Question 16

Which of the following best describes the transfer of energy and matter in photosynthesis?

Accepted Answer

A)  Energy in sunlight directly becomes ATP molecules in photosynthesis. 
B)  ATP is made up of chemical energy which is transferred to sugar. 
C)  Energy in sunlight is transformed into chemical energy when electrons move to a more excited state. 
D)  Matter in ATP is transferred to sugars in photosynthesis when electrons from ATP become part of sugars. 
A)  Energy in sunlight directly becomes ATP molecules in photosynthesis. 
B)  ATP is made up of chemical energy which is transferred to sugar. 
C)  Energy in sunlight is transformed into chemical energy when electrons move to a more excited state. 
D)  Matter in ATP is transferred to sugars in photosynthesis when electrons from ATP become part of sugars.

Question 17

The ultimate source of all the food we eat and the oxygen we breathe is

Accepted Answer

A)  cellular respiration. 
B)  photosynthesis. 
C)  glycolysis. 
D)  anaerobic metabolism. 
A)  cellular respiration. 
B)  photosynthesis. 
C)  glycolysis. 
D)  anaerobic metabolism.

Question 18

Which of these can be concluded from the figure below?

Accepted Answer

A)  In some years of the study the mean poison ivy biomass decreased to the level it was at the beginning of the study. 
B)  There were more elevated CO2 plots than control plots. 
C)  Not all of the increase in mean poison ivy biomass can be attributed to the CO2 that the researcher added. 
D)  Poison ivy in the experimental plots was more toxic than that in the control plots. 
A)  In some years of the study the mean poison ivy biomass decreased to the level it was at the beginning of the study. 
B)  There were more elevated CO2 plots than control plots. 
C)  Not all of the increase in mean poison ivy biomass can be attributed to the CO2 that the researcher added. 
D)  Poison ivy in the experimental plots was more toxic than that in the control plots.

Question 19

A packet of light energy is called a

Accepted Answer

A)  quantum. 
B)  pigment. 
C)  photon. 
D)  phaser. 
A)  quantum. 
B)  pigment. 
C)  photon. 
D)  phaser.

Question 20

Which of the following is not an expected outcome of global climate change?

Accepted Answer

A)  extreme weather patterns 
B)  lower sea levels 
C)  spread of tropical diseases 
D)  increased extinction rates 
A)  extreme weather patterns 
B)  lower sea levels 
C)  spread of tropical diseases 
D)  increased extinction rates

Exam 7: Photosynthesis: Using Light to Make Food

The addition of oxygen instead of carbon dioxide to RuBP results in

Mitochondria transfer ________ energy from ________ to ATP; chloroplasts transform ________ energy into the chemical energy of ATP.

Which of the following molecules is a reactant of photosynthesis?

Which of the following is part of the light reaction?

What is the source of energy that provides the boost for electrons during photosynthesis?

Plant cells

Purple sulfur bacteria are organisms capable of photosynthesis. They get their name, in part, because they use H2S (hydrogen sulfide) instead of water during the light reactions. In what form would you expect to find sulfur (S) as a result of photosynthesis in these bacteria?

Thylakoids are arranged in stacks called

In photophosphorylation, energy from electron flow is used to transport ________ from the ________ to the thylakoid compartment, generating a concentration gradient of ________.

The graph shows records of temperature (light gray line) and CO2 (dark gray line) over the past 1,000 years. CO2 is recorded in parts per million (ppm). -If you focus on the data from the mid-1900s (indicated by the arrow) through today, the graph shows that

Sunlight is a type of ________ energy.

Plant cells are protected from the harmful effects of excessive light energy and reactive oxidative molecules by

Global warming due to the greenhouse effect may be

What is the likely origin of chloroplasts?

CO2 enters and O2 escapes from a leaf via

Which of the following best describes the transfer of energy and matter in photosynthesis?

The ultimate source of all the food we eat and the oxygen we breathe is

Which of these can be concluded from the figure below?

A packet of light energy is called a

Which of the following is not an expected outcome of global climate change?

Biology: Exploring Life

The Chemical Basis of Life

The Molecules of Cells

A Tour of the Cell

The Working Cell

How Cells Harvest Chemical Energy

The Cellular Basis of Reproduction and Inheritance

Patterns of Inheritance

Molecular Biology of the Gene

How Genes Are Controlled

DNA Technology and Genomics

How Populations Evolve

The Origin of Species

Tracing Evolutionary History

Microbial Life: Prokaryotes and Protists

The Evolution of Plant and Fungal Diversity

The Evolution of Invertebrate Diversity

The Evolution of Vertebrate Diversity

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Gas Exchange

Circulation

The Immune System

Control of Body Temperature and Water Balance

Hormones and the Endocrine System

Reproduction and Embryonic Development

Nervous Systems

The Senses

How Animals Move

Plant Structure, Growth, and Reproduction

Plant Nutrition and Transport

Control Systems in Plants

The Biosphere: an Introduction to Earths Diverse Environments

Behavioral Adaptations to the Environment

Population Ecology

Communities and Ecosystems

Conservation Biology

Filters

Mitochondria transfer energy from to ATP; chloroplasts transform energy into the chemical energy of ATP.

Purple sulfur bacteria are organisms capable of photosynthesis. They get their name, in part, because they use H₂S (hydrogen sulfide) instead of water during the light reactions. In what form would you expect to find sulfur (S) as a result of photosynthesis in these bacteria?

In photophosphorylation, energy from electron flow is used to transport from the to the thylakoid compartment, generating a concentration gradient of .

The graph shows records of temperature (light gray line) and CO₂ (dark gray line) over the past 1,000 years. CO₂ is recorded in parts per million (ppm). -If you focus on the data from the mid-1900s (indicated by the arrow) through today, the graph shows that

CO₂enters and O₂ escapes from a leaf via