Question 1

Please refer to the following art to answer the following question(s).
  
-One of the compounds that is a direct output of the Calvin cycle is ______.

Accepted Answer

A)  C6H12O6 
B)  NADPH 
C)  G3P 
D)  ATP 
A)  C6H12O6 
B)  NADPH 
C)  G3P 
D)  ATP

Question 2

C4 plants conserve water by ______.

Accepted Answer

A)  shuttling CO2 from the Calvin cycle to the water-splitting photosystem 
B)  keeping their stomata closed when the weather is hot and dry 
C)  growing very deep roots 
D)  running the Calvin cycle at night 
A)  shuttling CO2 from the Calvin cycle to the water-splitting photosystem 
B)  keeping their stomata closed when the weather is hot and dry 
C)  growing very deep roots 
D)  running the Calvin cycle at night

Question 3

Which of the following is produced during the light reactions of photosynthesis?

Accepted Answer

A)  O2 
B)  CO2 
C)  C6H12O6 
D)  ADP 
A)  O2 
B)  CO2 
C)  C6H12O6 
D)  ADP

Question 4

Which of the following is a way that a molecule releases energy gained by absorption of a photon?

Accepted Answer

A)  heat 
B)  fluorescence 
C)  light 
D)  all of the above 
A)  heat 
B)  fluorescence 
C)  light 
D)  all of the above

Question 5

Refer to the accompanying figure.Which of the following best describes the direct mechanism of ATP production during photosynthesis?

Accepted Answer

A)  use of the energy generated as hydrogen ions (H+) move up a proton gradient; this energy is used to make ATP 
B)  use of the energy released as excited electrons are passed from one molecule to another in the electron transport system; the energy is converted to the chemical bond energy of ATP 
C)  use of the energy stored in excited electrons; as the electrons move from the excited state to the ground state, the energy released is converted to the energy stored in the third phosphate bond in ATP 
D)  use of the energy stored in hydrogen ion (H+) gradients; the potential energy of the proton gradient is released as the protons move down their gradient through special membrane protein channels; this energy is converted to chemical bond energy in the ATP molecule 
A)  use of the energy generated as hydrogen ions (H+) move up a proton gradient; this energy is used to make ATP 
B)  use of the energy released as excited electrons are passed from one molecule to another in the electron transport system; the energy is converted to the chemical bond energy of ATP 
C)  use of the energy stored in excited electrons; as the electrons move from the excited state to the ground state, the energy released is converted to the energy stored in the third phosphate bond in ATP 
D)  use of the energy stored in hydrogen ion (H+) gradients; the potential energy of the proton gradient is released as the protons move down their gradient through special membrane protein channels; this energy is converted to chemical bond energy in the ATP molecule

Question 6

What are grana?

Accepted Answer

A)  thick fluids inside chloroplasts 
B)  convolutions of the inner chloroplast membrane 
C)  stacks of membranous sacs 
D)  pigments found in chloroplasts 
A)  thick fluids inside chloroplasts 
B)  convolutions of the inner chloroplast membrane 
C)  stacks of membranous sacs 
D)  pigments found in chloroplasts

Question 7

Refer to the accompanying figure.Which of the following is true regarding the behavior of a chlorophyll molecule as it absorbs a photon?

Accepted Answer

A)  An electron goes from the excited state to the ground state. 
B)  Light is released. 
C)  The energy of a photon raises an electron to the excited state. 
D)  ATP is broken down. 
A)  An electron goes from the excited state to the ground state. 
B)  Light is released. 
C)  The energy of a photon raises an electron to the excited state. 
D)  ATP is broken down.

Question 8

CAM plants conserve water by ______.

Accepted Answer

A)  opening their stomata only at night 
B)  incorporating CO2 into RuBP 
C)  keeping their stomata closed at night 
D)  running the Calvin cycle at night 
A)  opening their stomata only at night 
B)  incorporating CO2 into RuBP 
C)  keeping their stomata closed at night 
D)  running the Calvin cycle at night

Question 9

Please use the following information to answer the following question(s).
You work for a company selling tropical rain forest plants commonly found in the understory of the forest. These plants are shade tolerant and can be grown indoors because they require low light. Your employer wants you to find out what is the best type of light to maximize growth of these understory plants. Using a full spectrum of natural light would cause these plants to die because they are a shade-tolerant plant species.
From your biology class, you recall that the light-dependent reactions of photosynthesis involve pigment molecules that absorb light of specific wavelengths. You also remember the experiments done by the German biologist Theodor Engelmann, in which he separated light using a prism into different wavelengths and then determined which wavelengths were best for promoting photosynthesis in the algae species he was examining. Your goal is to determine which wavelengths (colors) of light are best for promoting photosynthesis to enhance growth in your species of plant. To achieve this, you grew your plants under different wavelengths of light and measured their growth rates. The wavelengths were measured in nanometers (nm), and the growth rate was measured in millimeters per day (mm/day). The data you collected are as follows:
   
Make a bar graph plotting growth rates on the y-axis and wavelengths of light on the x-axis. Referring to your graph, answer the following question(s):
-Which wavelength is best for your plants' growth?

Accepted Answer

A)  650 nm 
B)  550 nm 
C)  500 nm 
D)  400 nm 
A)  650 nm 
B)  550 nm 
C)  500 nm 
D)  400 nm

Question 10

The Calvin cycle requires ______ and ______ from the light reactions in order to operate.

Accepted Answer

A)  glucose... carbon dioxide 
B)  electrons... NADH 
C)  ATP... NADPH 
D)  RuBP... NADP+ 
A)  glucose... carbon dioxide 
B)  electrons... NADH 
C)  ATP... NADPH 
D)  RuBP... NADP+

Question 11

The light reactions of photosynthesis take place ______.

Accepted Answer

A)  in the stroma 
B)  on the cristae 
C)  in the thylakoid membrane 
D)  in the cytosol 
A)  in the stroma 
B)  on the cristae 
C)  in the thylakoid membrane 
D)  in the cytosol

Question 12

Photosynthesis contributes to plant growth by _____.

Accepted Answer

A)  taking in oxygen and making wood 
B)  taking in carbon dioxide and making sugars (carbohydrates) 
C)  synthesizing carbon dioxide and making cellulose 
D)  converting sugar to oxygen and water 
A)  taking in oxygen and making wood 
B)  taking in carbon dioxide and making sugars (carbohydrates) 
C)  synthesizing carbon dioxide and making cellulose 
D)  converting sugar to oxygen and water

Question 13

In photosynthesis,redox reactions ultimately transfer electrons from ______ to ______.

Accepted Answer

A)  O2... CO2 
B)  C6H12O6... O2 
C)  H2O... C6H12O6 
D)  H2O... CO2 
A)  O2... CO2 
B)  C6H12O6... O2 
C)  H2O... C6H12O6 
D)  H2O... CO2

Question 14

The color that we see when looking at a pigmented object is ______.

Accepted Answer

A)  the wavelengths that are absorbed by the pigment 
B)  the wavelengths that are reflected or transmitted by the pigmented object 
C)  the wavelengths that have been raised to an excited state by the pigmented object 
D)  the wavelengths that the pigmented object created after interacting with sunlight 
A)  the wavelengths that are absorbed by the pigment 
B)  the wavelengths that are reflected or transmitted by the pigmented object 
C)  the wavelengths that have been raised to an excited state by the pigmented object 
D)  the wavelengths that the pigmented object created after interacting with sunlight

Question 15

Which of the following is found in both cellular respiration and in the light reactions of photosynthesis?

Accepted Answer

A)  citric acid cycle 
B)  glycolysis 
C)  Calvin cycle 
D)  electron transport chain 
A)  citric acid cycle 
B)  glycolysis 
C)  Calvin cycle 
D)  electron transport chain

Question 16

______ is the source of the oxygen gas released by a photosystem.

Accepted Answer

A)  H2O 
B)  Chlorophyll a 
C)  CO2 
D)  C6H12O6 
A)  H2O 
B)  Chlorophyll a 
C)  CO2 
D)  C6H12O6

Question 17

What name is given to the membranous sacs found within a chloroplast?

Accepted Answer

A)  stroma 
B)  cristae 
C)  thylakoids 
D)  vesicles 
A)  stroma 
B)  cristae 
C)  thylakoids 
D)  vesicles

Question 18

Where are photosystems located?

Accepted Answer

A)  chlorophyll 
B)  thylakoid membrane 
C)  cristae 
D)  stroma 
A)  chlorophyll 
B)  thylakoid membrane 
C)  cristae 
D)  stroma

Question 19

The products of the light reactions of photosynthesis are ______.

Accepted Answer

A)  ATP and NADH 
B)  ATP and NADPH 
C)  RuBP and O2 
D)  ATP and NADP+ 
A)  ATP and NADH 
B)  ATP and NADPH 
C)  RuBP and O2 
D)  ATP and NADP+

Question 20

What is one reason why plants have accessory pigment molecules,like chlorophyll b and carotenoids?

Accepted Answer

A)  to reflect more energy 
B)  to absorb energy in parts of the electromagnetic spectrum that chlorophyll a cannot 
C)  to give them different colors 
D)  because plants cannot make enough chlorophyll a for all of their energy needs 
A)  to reflect more energy 
B)  to absorb energy in parts of the electromagnetic spectrum that chlorophyll a cannot 
C)  to give them different colors 
D)  because plants cannot make enough chlorophyll a for all of their energy needs

Exam 7: Photosynthesis: Using Light to Make Food

Please refer to the following art to answer the following question(s). -One of the compounds that is a direct output of the Calvin cycle is ______.

C4 plants conserve water by ______.

Which of the following is produced during the light reactions of photosynthesis?

Which of the following is a way that a molecule releases energy gained by absorption of a photon?

Refer to the accompanying figure.Which of the following best describes the direct mechanism of ATP production during photosynthesis?

What are grana?

Refer to the accompanying figure.Which of the following is true regarding the behavior of a chlorophyll molecule as it absorbs a photon?

CAM plants conserve water by ______.

The Calvin cycle requires ______ and ______ from the light reactions in order to operate.

The light reactions of photosynthesis take place ______.

Photosynthesis contributes to plant growth by _____.

In photosynthesis,redox reactions ultimately transfer electrons from ______ to ______.

The color that we see when looking at a pigmented object is ______.

Which of the following is found in both cellular respiration and in the light reactions of photosynthesis?

______ is the source of the oxygen gas released by a photosystem.

What name is given to the membranous sacs found within a chloroplast?

Where are photosystems located?

The products of the light reactions of photosynthesis are ______.

What is one reason why plants have accessory pigment molecules,like chlorophyll b and carotenoids?

Introduction- Biology Today

Essential Chemistry for Biology

The Molecules of Life

A Tour of the Cell

The Working Cell

Cellular Respiration: Obtaining Energy from Food

Cellular Reproduction: Cells from Cells

Patterns of Inheritance

The Structure and Function of DNA

How Genes Are Controlled

DNA Technology

How Populations Evolve

How Biological Diversity Evolves

The Evolution of Microbial Life

Plants, Fungi, and the Move onto Land

The Evolution of Animals

An Introduction to Ecology and the Biosphere

Population Ecology

Communities and Ecosystems

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Circulation and Respiration

The Body's Defenses

Hormones

Reproduction and Development

Nervous, Sensory, and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

Filters

C₄ plants conserve water by ______.

The Calvin cycle requires and from the light reactions in order to operate.

In photosynthesis,redox reactions ultimately transfer electrons from to .