WorksheetsMiller Biology Photosythesis Ch. 9 Review
Total questions: 79
Worksheet time: 59mins
The diagram shows the structure of adenosine diphosphate (ADP).
What describes the conversion of ADP to ATP?
an input of energy as both phosphate groups detach
a release of energy as one phosphate group detaches
a release of energy as a third phosphate group is attached
an input of energy to attach a third phosphate group
Jason is listing the changes to matter and energy that occur during the process of photosynthesis. Which of these examples should he include in his list?
nuclear changes that convert hydrogen and oxygen into carbon
chemical changes that convert carbohydrates into smaller molecules.
changes that convert light energy into chemical energy stored in carbohydrates
changes that convert chemical energy into heat and light
Carl is explaining why chlorophyll is classified as a plant pigment and how it is useful in photosynthesis. Which property of chlorophyll would be most appropriate for him to cite?
chlorophyll’s ability to absorb light
chlorophyll’s green color
chlorophyll’s presence in chloroplasts
chlorophyll’s reactivity with oxygen
Jane is asked to describe the structural organization of chloroplasts. She writes the following sentence: “A chloroplast contains thylakoid stacks, called stroma, that are surrounded by fluid-filled grana.” Which change to the sentence is necessary to make the sentence accurate?
Replace “grana” with “chlorophyll.”
Replace “stroma” with “chlorophyll.”
Exchange the positions of “stroma” and “grana.”
Exchange the positions of “thylakoid” and “stroma.”
Joy is describing the role of electron carriers, such as NADP+, in photosynthesis. Which property of NADP+ should Joy cite?
the chemical bonds formed by electrons in its molecular structure
its ability to accept and release high-energy electrons and a hydrogen ion
its reactivity with oxygen, water, and carbon dioxide
its ability to emit a stream of electrons in a nuclear reaction
What best describes the role of light in the overall process of photosynthesis?
Light accepts the energy that is released by small molecules.
Light accepts the energy that is released by sugars.
Light provides the energy for breaking apart sugars into small molecules.
Light provides the energy for assembling small molecules into sugars.
By analyzing this equation, which property of photosynthesis can be identified?
the chemical changes that occur during the light-independent reactions
the chemical changes that occur during the light-dependent reactions
the source of carbon atoms in the carbohydrate product
the identities and roles of electron carriers
During photosynthesis, what best describes the role of the compound with the chemical formula C6H12O6?
a product that is not useful because of its low-energy chemical bonds
a product that is useful because of its high-energy chemical bonds
a reactant that is useful because of its high-energy chemical bonds
either a product or a reactant, depending on whether the cell needs to store energy or release energy
What best describes the roles of photosystem I and photosystem II in the process of photosynthesis?
They transfer electrons from a series of intermediates to form NADPH.
They absorb sunlight and transfer the energy to electrons.
They form ATP as hydrogen ions cross the thylakoid membrane.
They absorb sunlight and distribute the energy as heat.
Which is the role of the electron transport chain in the process of photosynthesis?
adding energy to the electrons that enter photosystem I
carrying electrons from photosystem II, to photosystem I, to NADP+
removing electrons from the chloroplast
cycling electrons between photosystem I and photosystem II
During the light-dependent reactions of photosynthesis, which event must occur for ATP synthase to function properly?
Hydrogen ions must pass through a channel within ATP synthase.
Molecular oxygen must combine with ATP synthase.
A molecule of ATP must release a phosphate group to become ADP.
Photosystem I and photosystem II must be deactivated.
Fred is developing a model of the light-independent reactions of photosynthesis, also known as the Calvin cycle. How should the model show how carbon compounds enter and exit the cycle?
enter as glucose, exit as carbon dioxide
enter as glucose, exit as 3-carbon molecules
enter as carbon dioxide, exit as 3-carbon molecules
enter as elemental carbon, exit as 6-carbon molecules
Jerry is developing the model shown to illustrate the process of photosynthesis. He plans to use the model to explain how photosynthesis transforms both energy and matter. In a key or legend for the model, how should Jerry describe the roles of NADPH and ATP in the light-independent reactions?
providing the oxygen for sugar molecules
providing the carbon for sugar molecules
absorbing the energy of light and transferring it to electrons
supplying the energy necessary to assemble sugar molecules
To revise the model, Chandler wants to use color to identify the reactants of photosynthesis. Which labels should he color?
H2O and O2
O2 and CO2
H2O and CO2
H2O, O2, and CO2
The model includes a wavy arrow to show light striking the thylakoids. Which label for the wavy arrow would be MOST USEFUL for communicating the role of light in photosynthesis?
Light is radiated from the chloroplast during the light-independent reactions.
Light energy is cycled within the thylakoid.
The chloroplast reflects the green wavelengths of light.
Light is the energy source for converting ADP to ATP, and NADP+ to NADPH.
In both photosystem I and photosystem II, light energy is used to excite electrons. The two photosystems were named in the order of their discovery, and not the order of their work in the light-dependent reactions. Photosystem II comes first in the sequence of events that moves electrons from water molecules to their destination, NADP+. Hydrogen ions travel with the electrons, and they combine with NADP+ to form NADPH. The process is summarized in this diagram.
In the diagram, an arrow leads from the splitting of water, to the two photosystems, and then to NADP+. What process is represented by this arrow?
the formation of high-energy sugars
the cycling of light energy within the photosystems
the movement of electrons along the electron transport chain
the conversion of electrons into sunlight
In both photosystem I and photosystem II, light energy is used to excite electrons. The two photosystems were named in the order of their discovery, and not the order of their work in the light-dependent reactions. Photosystem II comes first in the sequence of events that moves electrons from water molecules to their destination, NADP+. Hydrogen ions travel with the electrons, and they combine with NADP+ to form NADPH. The process is summarized in this diagram.
The concentration of hydrogen ions is greater inside the thylakoid than outside. Which reaction releases hydrogen ions inside the thylakoid?
the break-up of NADPH
the formation of NADPH
the break-up of water molecules
the formation of water molecules
A research scientist designs an experiment to measure the inputs and outputs of photosynthesis, by mass, for a representative plant over a certain time. The scientist’s predictions for the results are shown in the table.
If the scientist’s predictions are shown to be accurate, then which conclusion about photosynthesis do they support? (HINT: Apply scientific principles such as the Law of Conservation of Mass.)
All of the matter in water is converted into oxygen gas.
All of the matter in carbon dioxide is converted into oxygen gas.
All of the matter in carbon dioxide is converted into sugars.
Some but not all of the matter in carbon dioxide is converted into sugars.
A research scientist designs an experiment to measure the inputs and outputs of photosynthesis, by mass, for a representative plant over a certain time. The scientist’s predictions for the results are shown in the table.
What is the main role of carbon dioxide during the process of photosynthesis?
Carbon dioxide is a waste product that is released into the atmosphere.
Carbon dioxide is used to assemble sugars, the main product of photosynthesis.
Carbon dioxide is used to accept electrons and transfer them between photosystems.
Carbon dioxide is used to transfer energy from the light-dependent reactions to the light-independent reactions.
A research scientist designs an experiment to measure the inputs and outputs of photosynthesis, by mass, for a representative plant over a certain time. The scientist’s predictions for the results are shown in the table.
The table that the scientist constructed does not include light. Describe the role of light in the scientist’s experiment. Then propose an explanation for why light was not included in the table.
Light provides the energy for the chemical reactions that take place during photosynthesis, and the table includes only matter, not energy.
Light provides the matter for the chemical reactions that take place during photosynthesis, and the table includes only energy, not matter.
Light is a product of the chemical reactions that take place during photosynthesis, and the table includes only reactants, not products.
Light plays no role in the scientist’s experiment and therefore was not included in the table.
Which of the following is NOT a part of photosynthesis?
Calvin cycle
Light reactions
Light independent reactions
Krebs cycle
Where do the light reactions take place?
cytosol
thylakoid membrane
stroma
mitochondrial matrix
What is the input for the light reactions?
light energy
ATP
NADPH
H2O
What is the output for the light reactions?
light energy
ATP
NADPH
H2O
Where does the Calvin cycle take place?
cytosol
thylakoid membrane
stroma
mitochondrial matrix
What is the input for the Calvin cycle?
CO2
H2O
NADPH
ATP
G3P
What is the output for the Calvin cycle?
CO2
H2O
NADPH
ATP
G3P
How many CO2 molecules are needed to make 1 G3P?
1
2
3
6
How many turns of the Calvin cycle are required for 1 G3P to be synthesized?
1
2
3
6
How many NADPHs are required for the Calvin cycle?
2
3
6
9
How many ATPs are required for the Calvin cycle?
2
3
6
9
Which of the following describes the pathway of electrons in the light reactions?
O2 -> PS II -> PS I -> NADH
O2 -> PS II -> PS I -> NADPH
O2 -> PS I -> PS II -> NADPH
O2 -> PS I -> PS II -> NADH
What is the purpose of ATP?
Absorbs Sunlight
Stores & Releases Energy
Recycles
Transfers energy from the sun
What is the function of chlorophyll?
Channels the energy of sunlight into chemical energy
Gives plants their green color
With photosynthesis, chlorophyll absorbs energy and then transforms water and carbon dioxide into oxygen and carbohydrates.
All of the above
What is the purpose of the Calvin Cycle?
Transfers energy from the sun
Destroys carbon atoms
Allow photosynthesis organisms to produce sugar from sunlight and a carbon source.
none of the above
Where does the energy come from when a ATP molecule is broken?
The first phosphates
Ribose
Adenine
The 2nd and 3rd phosphates
What is ATP?
Organisms that obtain food by consuming other living things.
One of the most important compounds that cells use to store and release energy.
Organisms that make their own food.
The process by which autotrophs use energy.
ATP consist of?
Adenine, Ribose, and three phosphate groups
Adenine and Ribose
Adenine, Ribose, and two phosphate groups
None of the Above
What is a heterotrophs?
Chemical Fuels
Organisms that make their own food.
Organisms that obtain food by consuming other living things
The energy of sunlight to produce high energy carbohydrates.
Plants, algae, and some bacteria are able to use light energy from the sun to produce food. Organisms that make their own food are called?
Photosynthesis
Heterotrophs
Autotrophs
ADP
Which one is fully charged ATP or ADP?
ATP
ADP
Both
None of the above
What does ADP consist of?
Adenine
Ribose
Adenine, Ribose, and three phosphate groups
Adenine, Ribose, and two phosphate groups
Is ADP partially or fully charged?
Fully Charged
Can be both fully or partial
Partially Charged
Non of the above
What is photosynthesis?
When organisms consume other food.
Compound that stores and releases energy.
A chemical fuel.
The process by which autotrophs use the energy of sunlight to produce high energy carbohydrates , sugars, and starches that can be used as food.
Photosynthesis comes from the Greek Word photo, meaning light and synthesis meaning putting together. Therefore, photosynthesis means?
Taking a photograph
Using light to put something together
Using energy to create life
All of the above
What process produces ATP and NADPH?
ATP
photosynthesis
Calvin Cycle
ADP
In the process of photosynthesis, what does the water provide?
Oxygen
Elections
Hydrogen ions
Oxygen, electrons, and hydrogen ions
The plants main photosynthetic pigment is?
Photosynthesis
Chlorophyll
Heterotroph
Autotroph
Plants gather the suns energy with these light absorbing molecules?
Pigment
ATP Synthase
Photosynthesis
Autotroph
A carrier molecule that accepts and holds 2 high energy electrons, along with a hydrogen ion is?
Stroma
NADPH
ATP
Thylakoid
What is light-energy that splits water, releasing oxygen, ATP, and NADPH
ATP
Light Independent Reactions
ADP
Light Dependent Reactions
A saclike photosynthetic membranes in the chloroplast where the light dependent reactions occur is?
Heterotroph
ATP Synthase
Thylakoid
Chlorophyll
The fluid portion of the chloroplast outside of the thylakoids where the light independent reactions occur is called?
NADPH
ADP
Thylakoid
Stroma
Carbon dioxide, ATP, and NADPH are used to make glucose. ADP and NADP+ are then recycled back to the thylakoids. What is this called?
ATP
Light Independent Reactions
ADP
Electron Transport
The protein through which H+ ions diffuse, powering the synthesis of ATP is?
Chlorophyll
Photosynthesis
ATP Synthase
Heterotroph
The first step in photosynthesis is?
breakdown of carbon dioxide
absorption of light energy
production of oxygen
synthesis of water
The principal pigment in plants is?
Oxygen
ATP
ADP
chlorophyll
Which of the following is a autotroph?
deer
plants and mushrooms
mushrooms
plants
The principal chemical compound that living things use to store energy is?
DNA
ADP
ATP
H2O
When a candle burns, energy is released in the form of ?
light and heat
carbon dioxide and water
electricity and motion
glucose
The amount of energy stored in a molecule of ATP compared to the amount stored in a molecule of glucose is:
Greater
Less
The Same
Variable, depending on the conditions
Compare the amounts of energy stored by ATP & glucose. Which compound is used by the cell as an immediate source of energy?
ATP
ATP and glucose at different times
Glucose
neither
How do heterotrophs and autotrophs differ in the way they obtain energy?
Heterotrophs obtain their energy through sunlight and autotrophs consume other organisms.
Heterotrophs obtain their energy through consumption and autotrophs obtain their energy through sunlight.
None of the above
The leaves of a plant appear green because chlorophyll
reflects blue light
absorbs blue light
reflects green light
absorbs green light
What is the basic equation for photosynthesis?
Water + light + glucose + oxygen
Light + glucose + oxygen
Carbon dioxide +water + light+ glucose+ oxygen
Glucose + Water
In addition to light and chlorophyll, photosynthesis requires
Water and oxygen
Water and sugars
Oxygen and Carbon dioxide
Water and Carbon dioxide
What role do plant pigments play in the process of photosynthesis?
They do not play a role.
They absorb different wavelengths of light that power the photosynthesis process.
They do not absorb light so they do not power the photosynthesis process.
None of the above
The first process in the light dependent reactions of photosynthesis is?
Light absorption
ATP formation
Electron transport
Oxygen production
Which substance from the light dependent reactions of photosynthesis is a source of energy from the Calvin cycle?
Pyruvic acid
ADP
NADPH
ATP
The light independent reactions of photosynthesis are also known as
Sugar cycle
Carbon cycle
ATP cycle
Calvin cycle
ATP synthase in the chloroplast membranes makes ATP, utilizing the energy of highly concentrated
Electrons
NADPH
hydrogen ions
Chlorophyll
CAM plants are specialized to survive under what conditions that would harm most other kinds of plants?
hot, dry conditions
long day lengths
excess water
low temperatures
Factors that affect photosynthesis is?
Water
Temperature, light intensity and the availability of water.
ATP & ADP Structure
Electron transport chain
A compound that can accept a pair of high-energy electrons and transfer them, along with most of their energy, to another molecule (Like mitts moving a hot potato) is
Electron carrier
Electron transport chain
Photosynthesis
ADP
Spans the thylakoid membrane and allows H+ ions to pass forcing it to rotate like a turbine and produce ATP. Process is known as chemiosmosis.
ATP Synthase
Photosynthesis
Photosystems
None of the above
Uses the energy of sunlight to convert water and carbon dioxide (reactants) into high-energy sugars and oxygen (products)
Photosystems
Photosystems I
Photosynthesis (2)
Photosynthesis
This is a series of electron carrier proteins that shuttle high-energy electrons during ATP-generating reactions.
Electron carrier
Photosynthesis
Electron transport chain
ATP
Match the following processes and their location.
Photosynthesis
Chloroplast
Light-Dependent Reactions
Thylakoid Membrane
Light-Independent Reactions
(Calvin Cycle)
Stroma
Absorption of Light Energy
Photosystems II & I
Production of ATP
ATP Synthase
Put the following steps of light-dependent reactions in order.
Photosystem II absorbs light energy and energized electrons
Electrons are transported on the electron transport chain (ETC).
Energy from the electrons is used to pump hydrogen ions from the stroma into the thylakoid space.
Photosystem I absorbs light energy and reenergizes the electrons.
2 electrons and a hydrogen ion are picked up by NADP+ to form NADPH
