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Photosynthesis Steps Flashcards

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Questions and Answers

What occurs in Step 1 of Photosynthesis?

CO2 and H2O enter the leaf (correct)

Electrons move down to enzymes

Light hits the pigment

Calvin cycle converts CO2 to glucose

What happens in Step 2 of Photosynthesis?

Light hits the pigment in the membrane of a thylakoid, splitting the H2O into O2

What occurs during Step 3 of Photosynthesis?

The electrons move down to enzymes

Describe Step 4 of Photosynthesis.

Sunlight hits the second pigment molecule allowing the enzymes to convert ADP to ATP and NADP+ gets converted to NADPH Signup and view all the answers

What is the purpose of Step 5 in Photosynthesis?

The ATP and NADPH is used by the calvin cycle as a power source for converting carbon dioxide from the atmosphere into simple sugar glucose. Signup and view all the answers

What happens in Step 6 of Photosynthesis?

The calvin cycle converts 3CO2 molecules from the atmosphere to glucose Signup and view all the answers

What is the Calvin cycle?

The second of two major stages in photosynthesis Signup and view all the answers

Study Notes

Photosynthesis Steps

Light Dependent Reactions begin with CO2 and H2O entering the leaf.
Light energy splits H2O molecules into O2, contributing to the oxygen exchange in the atmosphere.
Electrons generated from water splitting move down to enzymes, facilitating further reactions.
Sunlight activates a second pigment molecule, leading to the conversion of ADP into ATP and the transformation of NADP+ into NADPH.

Light Independent Reactions (Calvin Cycle)

ATP and NADPH produced in the light reactions serve as energy sources for the Calvin cycle.
The Calvin cycle fixes 3 CO2 molecules from the atmosphere and converts them into glucose, a simple sugar.

Calvin Cycle Overview

Represents the second major stage of photosynthesis, occurring after light reactions.
Focuses on CO2 fixation and the reduction of fixed carbon into carbohydrates, essential for plant energy and growth.

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Description

Test your knowledge of the steps involved in photosynthesis with these flashcards. Each card covers a key component of the light-dependent reactions, making it easier to understand the complex processes of how plants convert light into energy.