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WorksheetsMiller and Levine Photosynthesis Test Review
Total questions: 20
Worksheet time: 27mins
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.
