Question 1

According to scientists, how do the levels of carbon dioxide in the atmosphere today compare to the past 400,000 years?

Accepted Answer

A)  There's more atmospheric carbon dioxide today. 
B)  There's less atmospheric carbon dioxide today. 
C)  There have been no changes in atmospheric carbon dioxide levels. 
D)  Atmospheric carbon dioxide levels have fluctuated randomly. 
A)  There's more atmospheric carbon dioxide today. 
B)  There's less atmospheric carbon dioxide today. 
C)  There have been no changes in atmospheric carbon dioxide levels. 
D)  Atmospheric carbon dioxide levels have fluctuated randomly.

Question 2

Which substance is a fossil fuel?

Accepted Answer

A)  vegetable oil 
B)  coal 
C)  hydrogen gas 
D)  wood 
A)  vegetable oil 
B)  coal 
C)  hydrogen gas 
D)  wood

Question 3

How might global warming affect an animal species that has narrow temperature requirements?

Accepted Answer

A)  It may cause the expansion of the species' range. 
B)  It may cause the extinction of the species. 
C)  It may reduce the diseases that threaten the species. 
D)  It may have no effect on the species. 
A)  It may cause the expansion of the species' range. 
B)  It may cause the extinction of the species. 
C)  It may reduce the diseases that threaten the species. 
D)  It may have no effect on the species.

Question 4

Where does the Calvin cycle of photosynthesis occur?

Accepted Answer

A)  stroma 
B)  outer chloroplast membrane 
C)  thylakoids 
D)  rubisco 
A)  stroma 
B)  outer chloroplast membrane 
C)  thylakoids 
D)  rubisco

Question 5

How do scientists estimate the atmospheric levels of carbon dioxide that existed on Earth hundreds or thousands of years ago?

Accepted Answer

A)  They deduce it from the carbon dioxide content of fossil fuels. 
B)  They measure it from bubbles of gas trapped in Antarctic ice. 
C)  They estimate it from the relative numbers of carbon-based life forms that existed over time. 
D)  They measure it from erupting volcanoes, bubbling hot springs, and seeping hydrothermal vents. 
A)  They deduce it from the carbon dioxide content of fossil fuels. 
B)  They measure it from bubbles of gas trapped in Antarctic ice. 
C)  They estimate it from the relative numbers of carbon-based life forms that existed over time. 
D)  They measure it from erupting volcanoes, bubbling hot springs, and seeping hydrothermal vents.

Question 6

What are the largest reservoirs of carbon dioxide and heat on Earth?

Accepted Answer

A)  the atmosphere 
B)  the oceans 
C)  animal bodies 
D)  fossil fuels 
A)  the atmosphere 
B)  the oceans 
C)  animal bodies 
D)  fossil fuels

Question 7

How would Earth change if the greenhouse effect didn't exist at all?

Accepted Answer

A)  Earth would radiate most of its heat energy into space. 
B)  All incoming sunlight energy would be absorbed. 
C)  Earth would be an extremely hot planet that never cools down. 
D)  Animals and plants would survive comfortably and average temperatures would never change. 
A)  Earth would radiate most of its heat energy into space. 
B)  All incoming sunlight energy would be absorbed. 
C)  Earth would be an extremely hot planet that never cools down. 
D)  Animals and plants would survive comfortably and average temperatures would never change.

Question 8

Which definition describes "heat"?

Accepted Answer

A)  the rate that molecules are moving within a substance 
B)  the resistance to temperature change within a substance 
C)  the ability of a substance to transfer energy between its molecules 
D)  the total amount of energy associated with the movement of molecules in a substance 
A)  the rate that molecules are moving within a substance 
B)  the resistance to temperature change within a substance 
C)  the ability of a substance to transfer energy between its molecules 
D)  the total amount of energy associated with the movement of molecules in a substance

Question 9

What cells regulate gas exchange by opening and closing the stomata?

Accepted Answer

The answer of What cells regulate gas exchange by opening...

Question 10

What human activities release the majority of the carbon dioxide found in the atmosphere?

Accepted Answer

A)  exhaling (cellular respiration waste products) 
B)  adding decomposing garbage to landfills 
C)  burning wood for cooking fires 
D)  burning fossil fuels 
A)  exhaling (cellular respiration waste products) 
B)  adding decomposing garbage to landfills 
C)  burning wood for cooking fires 
D)  burning fossil fuels

Question 11

-According to the graph, which wavelengths of light are best absorbed by the chlorophyll pigments found in green leaves?

Accepted Answer

A)  520 nm 
B)  560 nm 
C)  620 nm 
D)  680 nm 
A)  520 nm 
B)  560 nm 
C)  620 nm 
D)  680 nm

Question 12

What energy molecule is produced during the light reactions and helps to power the Calvin cycle?

Accepted Answer

A)  ATP 
B)  glucose 
C)  sucrose 
D)  NADP⁺ 
A)  ATP 
B)  glucose 
C)  sucrose 
D)  NADP⁺

Question 13

What process occurs as individual water molecules move fast enough to rise into the air as water vapor?

Accepted Answer

A)  condensation 
B)  combustion 
C)  evaporation 
D)  precipitation 
A)  condensation 
B)  combustion 
C)  evaporation 
D)  precipitation

Question 14

Where do the light reactions of photosynthesis occur?

Accepted Answer

A)  stroma 
B)  outer chloroplast membrane 
C)  thylakoids 
D)  rubisco 
A)  stroma 
B)  outer chloroplast membrane 
C)  thylakoids 
D)  rubisco

Question 15

Which person could exert the most influence to speed the reduction of greenhouse gas emissions?

Accepted Answer

A)  individual 
B)  business owner 
C)  nonprofit corporation 
D)  policymaker 
A)  individual 
B)  business owner 
C)  nonprofit corporation 
D)  policymaker

Question 16

Which activity could help you to slow the rate of global warming?

Accepted Answer

A)  only buy food in plastic containers 
B)  drive faster than the speed limit 
C)  replace an old refrigerator with a new one 
D)  mow the grass more frequently 
A)  only buy food in plastic containers 
B)  drive faster than the speed limit 
C)  replace an old refrigerator with a new one 
D)  mow the grass more frequently

Question 17

What is the basis for fossil fuels?

Accepted Answer

A)  carbon-rich remains of plants and microorganisms 
B)  underground deposits of carbon dioxide 
C)  accumulations of partially decomposed dinosaurs 
D)  timber from old-growth forests 
A)  carbon-rich remains of plants and microorganisms 
B)  underground deposits of carbon dioxide 
C)  accumulations of partially decomposed dinosaurs 
D)  timber from old-growth forests

Question 18

When can photorespiration occur in plants?

Accepted Answer

A)  when stomata are closed 
B)  when oxygen levels inside the leaf are low 
C)  when the plant is undergoing transpiration 
D)  during the Calvin cycle 
A)  when stomata are closed 
B)  when oxygen levels inside the leaf are low 
C)  when the plant is undergoing transpiration 
D)  during the Calvin cycle

Question 19

Which item emits carbon dioxide into the atmosphere?

Accepted Answer

A)  green plants 
B)  volcanoes 
C)  soil 
D)  water 
A)  green plants 
B)  volcanoes 
C)  soil 
D)  water

Question 20

What process converts carbon dioxide and water into glucose and oxygen?

Accepted Answer

A)  photosynthesis 
B)  cellular respiration 
C)  glycolysis 
D)  fermentation 
A)  photosynthesis 
B)  cellular respiration 
C)  glycolysis 
D)  fermentation

Exam 5: Life in the Greenhouse: Photosynthesis and Climate Change

According to scientists, how do the levels of carbon dioxide in the atmosphere today compare to the past 400,000 years?

Which substance is a fossil fuel?

How might global warming affect an animal species that has narrow temperature requirements?

Where does the Calvin cycle of photosynthesis occur?

How do scientists estimate the atmospheric levels of carbon dioxide that existed on Earth hundreds or thousands of years ago?

What are the largest reservoirs of carbon dioxide and heat on Earth?

How would Earth change if the greenhouse effect didn't exist at all?

Which definition describes "heat"?

What cells regulate gas exchange by opening and closing the stomata?

What human activities release the majority of the carbon dioxide found in the atmosphere?

-According to the graph, which wavelengths of light are best absorbed by the chlorophyll pigments found in green leaves?

What energy molecule is produced during the light reactions and helps to power the Calvin cycle?

What process occurs as individual water molecules move fast enough to rise into the air as water vapor?

Where do the light reactions of photosynthesis occur?

Which person could exert the most influence to speed the reduction of greenhouse gas emissions?

Which activity could help you to slow the rate of global warming?

What is the basis for fossil fuels?

When can photorespiration occur in plants?

Which item emits carbon dioxide into the atmosphere?

What process converts carbon dioxide and water into glucose and oxygen?

Can Science Cure the Common Cold Introduction to the Scientific Method

Science Fiction, Bad Science, and Pseudoscience:

Is It Possible to Supplement Your Way to Better Performance and Health

Body Weight and Health: Enzymes, Metabolism, and Cellular Respiration

Cancer: DNA Synthesis, Mitosis, and Meiosis

Are You Only As Smart As Your Genes Mendelian and Quantitative Genetics

DNA Detective: Complex Patterns of Inheritance and Dna Profiling

Genetically Modified Organisms: Gene Expression, Mutation,

Where Did We Come From the Evidence for Evolution

An Evolving Enemy: Natural Selection

Who Am I Species and Races

The Greatest Species on Earth Biodiversity and Classification

Is the Human Population Too Large Population Ecology

Conserving Biodiversity: Community and Ecosystem Ecology

Where Do You Live Climate and Biomes

Organ Donation: Tissues and Organs

Binge Drinking: the Digestive and Urinary Systems

Clearing the Air: Respiratory and Cardiovascular Systems

Vaccination: Protection and Prevention or Peril Immune System,

Human Sex Differences: Endocrine, Skeletal, and Muscular Systems

Is There Something in the Water Reproductive and Developmental Biology

Study Drugs: Brain Boost or Brain Drain Brain Structure and Function

Feeding the World: Plant Structure and Growth

Growing a Green Thumb: Plant Physiology

Filters