Question 1

To produce one glucose, the Calvin cycle needs to be run ________ times.

Accepted Answer

A) two 
B) four 
C) six 
D) eight 
A) two 
B) four 
C) six 
D) eight

Question 2

A redox reaction involves the transfer of

Accepted Answer

A) oxygen. 
B) water. 
C) an electron. 
D) carbon dioxide. 
A) oxygen. 
B) water. 
C) an electron. 
D) carbon dioxide.

Question 3

Photorespiration

Accepted Answer

A) may be an evolutionary relic from when atmospheric O₂ levels were low. 
B) is of benefit to the plant since it breaks down rubisco. 
C) is attributable to high CO₂ levels. 
D) produces glucose. 
A) may be an evolutionary relic from when atmospheric O₂ levels were low. 
B) is of benefit to the plant since it breaks down rubisco. 
C) is attributable to high CO₂ levels. 
D) produces glucose.

Question 4

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 5

The full range of electromagnetic energy is called the ________ spectrum.

Accepted Answer

A) visible 
B) electromagnetic 
C) energy 
D) ultraviolet 
A) visible 
B) electromagnetic 
C) energy 
D) ultraviolet

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

If you expose a photosynthesizing plant to water that contains both radioactive H and radioactive O, in which of the products of photosynthesis will the radioactive H and O show up?

Accepted Answer

A) H and O both in glucose 
B) H in glucose; O in water 
C) H in water; O in glucose 
D) H in glucose and water; O in O₂ 
A) H and O both in glucose 
B) H in glucose; O in water 
C) H in water; O in glucose 
D) H in glucose and water; O in O₂

Question 8

Photophosphorylation during photosynthesis differs from oxidative phosphorylation during cellular respiration in that

Accepted Answer

A) it involves an electron transport chain. 
B) energy is stored in the form of a proton (H⁺)concentration difference. 
C) generation of ATP is driven by a flow of protons (H⁺)through ATP synthase. 
D) the final electron acceptor is NADP⁺ and not oxygen. 
A) it involves an electron transport chain. 
B) energy is stored in the form of a proton (H⁺)concentration difference. 
C) generation of ATP is driven by a flow of protons (H⁺)through ATP synthase. 
D) the final electron acceptor is NADP⁺ and not oxygen.

Question 9

Autotrophs that utilize light as their energy source are

Accepted Answer

A) chemosynthetic autotrophs. 
B) photoautotrophs. 
C) fungi. 
D) heterotrophs. 
A) chemosynthetic autotrophs. 
B) photoautotrophs. 
C) fungi. 
D) heterotrophs.

Question 10

The Calvin cycle constructs ________, an energy-rich molecule that a plant cell can then use to make glucose or other organic molecules.

Accepted Answer

A) G3P 
B) ATP 
C) NADH 
D) carbon dioxide 
A) G3P 
B) ATP 
C) NADH 
D) carbon dioxide

Question 11

Photoautotrophs

Accepted Answer

A) make sugar by using organic raw materials. 
B) produce organic molecules from inorganic molecules. 
C) eat other organisms that use light energy to make food molecules. 
D) include only the green plants. 
A) make sugar by using organic raw materials. 
B) produce organic molecules from inorganic molecules. 
C) eat other organisms that use light energy to make food molecules. 
D) include only the green plants.

Question 12

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 13

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 14

What is the main adaptive advantage of the C₄ and CAM photosynthesis strategies over the C₃ strategy?

Accepted Answer

A) They help the plant synthesize glucose efficiently under dry conditions. 
B) They allow the plant to fix carbon under conditions of low CO₂. 
C) They allow the plant to fix carbon in cool conditions. 
D) They make it possible for the plant to use the Calvin cycle at night. 
A) They help the plant synthesize glucose efficiently under dry conditions. 
B) They allow the plant to fix carbon under conditions of low CO₂. 
C) They allow the plant to fix carbon in cool conditions. 
D) They make it possible for the plant to use the Calvin cycle at night.

Question 15

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 16

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 17

Which of the following statements about the greenhouse effect is true?

Accepted Answer

A) The greenhouse effect is reduced by deforestation. 
B) The greenhouse effect is exacerbated by the use of fossil fuels. 
C) The greenhouse effect will decrease the average temperature of the planet. 
D) The greenhouse effect has no direct relationship with the Industrial Revolution of the 1800s. 
A) The greenhouse effect is reduced by deforestation. 
B) The greenhouse effect is exacerbated by the use of fossil fuels. 
C) The greenhouse effect will decrease the average temperature of the planet. 
D) The greenhouse effect has no direct relationship with the Industrial Revolution of the 1800s.

Question 18

Which of the following colors contributes the least energy to photosynthesis?

Accepted Answer

A) blue 
B) red 
C) orange 
D) green 
A) blue 
B) red 
C) orange 
D) green

Question 19

Plants use sugars as

Accepted Answer

A) a fuel for photosynthesis. 
B) a starting material for the Calvin cycle. 
C) a source of electrons for chemiosmosis. 
D) a fuel for cellular respiration and a starting material for making other organic molecules. 
A) a fuel for photosynthesis. 
B) a starting material for the Calvin cycle. 
C) a source of electrons for chemiosmosis. 
D) a fuel for cellular respiration and a starting material for making other organic molecules.

Question 20

Clusters of light-gathering pigments in a photosystem

Accepted Answer

A) pass energy to the reaction center. 
B) are found in the roots of plants. 
C) absorb electrons. 
D) break down H₂O. 
A) pass energy to the reaction center. 
B) are found in the roots of plants. 
C) absorb electrons. 
D) break down H₂O.

Exam 7: Photosynthesis: Using Light to Make Food

To produce one glucose, the Calvin cycle needs to be run ________ times.

A redox reaction involves the transfer of

Photorespiration

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?

The full range of electromagnetic energy is called the ________ spectrum.

Plant cells

If you expose a photosynthesizing plant to water that contains both radioactive H and radioactive O, in which of the products of photosynthesis will the radioactive H and O show up?

Photophosphorylation during photosynthesis differs from oxidative phosphorylation during cellular respiration in that

Autotrophs that utilize light as their energy source are

The Calvin cycle constructs ________, an energy-rich molecule that a plant cell can then use to make glucose or other organic molecules.

Photoautotrophs

A packet of light energy is called a

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

What is the main adaptive advantage of the C₄ and CAM photosynthesis strategies over the C₃ strategy?

Thylakoids are arranged in stacks called

What is the likely origin of chloroplasts?

Which of the following statements about the greenhouse effect is true?

Which of the following colors contributes the least energy to photosynthesis?

Plants use sugars as

Clusters of light-gathering pigments in a photosystem

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

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