Section 1

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Light Reactions

Front

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Last updated

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Date created

Mar 1, 2020

Cards (17)

Section 1

(17 cards)

Light Reactions

Front

The first of two major stages in photosynthesis (preceding the Calvin cycle). These reactions, which occur on the thylakoid membranes of the chloroplast or on membranes of certain prokaryotes, convert solar energy to the chemical energy of ATP and NADPH, releasing oxygen in the process.

Back

Heterotroph/consumer

Front

An organism that obtains food molecules by eating other organisms or substances derived from them.

Back

Chloroplast

Front

Organelle that absorbs sunlight and uses it to drive the synthesis of organic compounds from carbon dioxide and water.

Back

The stroma

Front

Where does the Calvin Cycle take place?.

Back

Chlorophyll

Front

Green pigment located in membranes within the chloroplasts of plants and algae and in the membranes of certain prokaryotes.

Back

Stroma

Front

The fluid of the chloroplast surrounding the thylakoid membrane; involved in the synthesis of organic molecules from carbon dioxide and water.

Back

Stomata

Front

Pores on the leaf where O2 exits and CO2 enters

Back

pigment

Front

Light-absorbing molecule

Back

ATP

Front

(Adenosine triphosphate molecule) main energy source that cells use for most of their work.

Back

Carbon dioxide (CO2)

Front

What provides the carbon atoms that are incorporated into sugar molecules in the Calvin cycle?

Back

ADP

Front

(Adenosine diphosphate) The compound that remains when a phosphate group is removed from ATP. When all related reactions occur, energy is released. Can also be converted back to ATP in effect storing potential energy

Back

Calvin cycle

Front

The second of two major stages in photosynthesis (following the light reactions), involving fixation of atmospheric CO2 and reduction of the fixed carbon into carbohydrate.

Back

H2O

Front

What provides electrons for the light reactions? .

Back

Thylakoids

Front

A flattened, membranous sac inside a chloroplast. They often exist in stacks called grana that are interconnected; their membranes contain molecular "machinery" used to convert light energy to chemical energy.

Back

Photosynthesis

Front

The process that converts light energy into chemical energy that is stored in glucose or other organic compounds; occurs in plants, algae, and certain prokaryotes.

Back

6CO2 + 6H2O → C6H12O6 + 6O2

Front

What is the chemical equation for photosynthesis?

Back

Autotroph/producer

Front

An organism capable of synthesizing its own food from inorganic substances, using light or chemical energy.

Back