Light Independent Reactions in Photosynthesis Pre-Test answer keys

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Which compound is produced during carbon fixation?

3-PGA

What is one role of ATP in the light-independent reaction of photosynthesis?

ATP supplies the energy to produce glucose and other carbohydrates.

Which question can be answered by following the scientific method?

How does a change in temperature affect the stomata of a plant?

Why is the Calvin cycle considered a dark reaction?

It can proceed in the dark.

What is carbon fixation, and how does it relate to photosynthesis?

It is the conversion of CO2 into organic compounds, and it forms 3-PGA.

Which compound is produced during regeneration?

RuBP

Which statement best distinguishes the light-dependent (L-D) reactions from the light-independent (L-IND) reactions?

The L-D reactions occur in the thylakoid membrane, and the L-IND reactions occur in the stroma.

Which is an important difference between light-dependent (L-D) and light-independent (L-IND) reactions in photosynthesis?

The L-D reactions require light energy and water, and the L-IND reactions require ATP, NADPH and CO2.

Which statement about the light-independent reactions in photosynthesis is true?

They comprise the Calvin cycle.

Which process occurs during the light-dependent reactions in photosynthesis?

Water molecules are split.

Which is the first step in the scientific method?

ask a question

Which is required for the light-independent reactions in photosynthesis to occur?

carbon dioxide

Fiona wants to use the scientific method to answer the question "Do oxygen levels in the air affect rates of photosynthesis?" She reads about photosynthesis in her biology book and is ready to carry out the next step. What should she do next?

form a hypothesis

In the chemical equation for photosynthesis, carbon dioxide and water are converted to glucose and oxygen. 6CO2 + 6H2O ® C6H12O6 + 6O2 Which component could be added to complete this chemical equation?

light energy

Which process is catalyzed by rubisco during the light-independent reactions of photosynthesis?

regeneration

What is the source of the carbon dioxide that is used in photosynthesis?

sunlight

What is the source of the carbon dioxide that is used in photosynthesis?

the atmosphere


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