Question 1

What compound is found at the reaction center of a photosystem?

Accepted Answer

A) chlorophyll b 
B) carotenoids 
C) phycobilins 
D) chlorophyll a 
A) chlorophyll b 
B) carotenoids 
C) phycobilins 
D) chlorophyll a

Question 2

Scenario
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 questions:
-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 3

The shorter the wavelength of visible light, the ________.

Accepted Answer

A) less energy that is absorbed by photosynthetic pigments 
B) redder the color 
C) more photons it contains 
D) greater the energy 
A) less energy that is absorbed by photosynthetic pigments 
B) redder the color 
C) more photons it contains 
D) greater the energy

Question 4

The rate of photosynthesis in an aquatic plant can be determined by the number of bubbles released from the plant. The number of bubbles ________.

Accepted Answer

A) will increase in the presence of predominately green light 
B) is most numerous in the dark 
C) is less numerous at greater depths than at shallower depths 
D) will stay the same throughout a 24-hour period 
A) will increase in the presence of predominately green light 
B) is most numerous in the dark 
C) is less numerous at greater depths than at shallower depths 
D) will stay the same throughout a 24-hour period

Question 5

One reason plants have accessory pigment molecules, like chlorophyll b and carotenoids, is ________.

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

Question 6

A student saw a bumper sticker with "Have you thanked a green plant today." This likely referred to ________.

Accepted Answer

A) without plants to cool the earth, life would have boiled away 
B) without plants to produce oxygen, most organisms could not survive 
C) without plants to produce firewood, humans would freeze to death 
D) without plants to feed decomposers, the soil would be sterile 
A) without plants to cool the earth, life would have boiled away 
B) without plants to produce oxygen, most organisms could not survive 
C) without plants to produce firewood, humans would freeze to death 
D) without plants to feed decomposers, the soil would be sterile

Question 7

Which molecule 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 8

When a molecule absorbs a photon, one of its electrons is raised to the ________ state.

Accepted Answer

A) energetic 
B) quantum 
C) positive 
D) excited 
A) energetic 
B) quantum 
C) positive 
D) excited

Question 9

Which process 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 10

-Refer to the accompanying figure. Plant cells that contain the organelle responsible for photosynthesis are concentrated in cells of the ________.

Accepted Answer

A) roots 
B) leaves 
C) stomata 
D) grana 
A) roots 
B) leaves 
C) stomata 
D) grana

Question 11

Please refer to the following art to answer the following questions.  
-Which statement BEST describes the direct mechanism of ATP production during photosynthesis?

Accepted Answer

A) uses energy generated as hydrogen ions (H+)move to an area where there are more hydrogen ions this energy is directly used to make ATP 
B) uses 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) uses energy stored in excited electrons; as the electrons move from the excited state to the ground state, the energy released is directly converted to the energy stored in the third phosphate bond in ATP 
D) uses 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 directly converted to chemical bond energy in the ATP molecule 
A) uses energy generated as hydrogen ions (H+)move to an area where there are more hydrogen ions this energy is directly used to make ATP 
B) uses 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) uses energy stored in excited electrons; as the electrons move from the excited state to the ground state, the energy released is directly converted to the energy stored in the third phosphate bond in ATP 
D) uses 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 directly converted to chemical bond energy in the ATP molecule

Question 12

What are grana?

Accepted Answer

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

What compound is found at the reaction center of a photosystem?

The shorter the wavelength of visible light, the ________.

The rate of photosynthesis in an aquatic plant can be determined by the number of bubbles released from the plant. The number of bubbles ________.

One reason plants have accessory pigment molecules, like chlorophyll b and carotenoids, is ________.

A student saw a bumper sticker with "Have you thanked a green plant today." This likely referred to ________.

Which molecule is produced during the light reactions of photosynthesis?

When a molecule absorbs a photon, one of its electrons is raised to the ________ state.

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

-Refer to the accompanying figure. Plant cells that contain the organelle responsible for photosynthesis are concentrated in cells of the ________.

Please refer to the following art to answer the following questions. -Which statement BEST describes the direct mechanism of ATP production during photosynthesis?

What are grana?

Learning About Life

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

The Evolution of Plants and Fungi

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 Bodys Defenses

Hormones

Reproduction and Development

Nervous, Sensory, and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

Filters

Exam 7: Photosynthesis: Using Light to Make Food

What compound is found at the reaction center of a photosystem?

The shorter the wavelength of visible light, the ________.

The rate of photosynthesis in an aquatic plant can be determined by the number of bubbles released from the plant. The number of bubbles ________.

One reason plants have accessory pigment molecules, like chlorophyll b and carotenoids, is ________.

A student saw a bumper sticker with "Have you thanked a green plant today." This likely referred to ________.

Which molecule is produced during the light reactions of photosynthesis?

When a molecule absorbs a photon, one of its electrons is raised to the ________ state.

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

-Refer to the accompanying figure. Plant cells that contain the organelle responsible for photosynthesis are concentrated in cells of the ________.

Please refer to the following art to answer the following questions. -Which statement BEST describes the direct mechanism of ATP production during photosynthesis?

What are grana?

Learning About Life

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

The Evolution of Plants and Fungi

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 Bodys Defenses

Hormones

Reproduction and Development

Nervous, Sensory, and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

Filters