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Flashcards in 8.2 Deck (15)
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1
Q

What are the reactants for the photosynthesis reactions?

A

6 Water, 6 Carbon-dioxide, (Energy)

2
Q

What are the products for the photosynthesis reactions?

A

High energy sugars, and Oxygen

3
Q

How does a plant obtain the reactants needed for photosynthesis?

A

Water: through its roots (in the ground.)
CO2: Through “pores” in it leaves (in the atmosphere)

4
Q

What role is played by the hydrogen ions that were released from the water molecules?

A

They power the ATP Synthase as they leave the cell, and change (along with 2 energised electrons) NADP+ into NADPH

5
Q

What is the main photosynthetic pigment of photosynthesis?

A

Chlorophyll

6
Q

Explain why chlorophyll appears green in color

A

Because it absorbs red and blue light, leaving only green to be reflected back

7
Q

What is the role of chlorophyll in photosynthesis?

A

It absorbs the light (red and blue) energy needed

8
Q

Why is sunlight needed in Photosynthesis

A

It is needed to energise the two electrons

9
Q

Name the part of the leaf that is the primary region of photosynthesis.

A

Chloroplasts

10
Q

Explain what happens when sunlight hits chlorophyll molecules

A

Light is absorbed charging the 2 electrons in Photosystem 2 which then travel through, and charge, a H+ pump. They then, along with H+ Ions, help change NADP+ into NADPH.

11
Q

What is the name of the electron carrier in photosynthesis?

A

An Electron Transport Train

12
Q

What is the purpose of the light dependent reaction?

A

This reaction creates the energy needed to create stable high energy sugars.

13
Q

Water molecules are broken down in the light dependent reactions. Name the three substances that are formed when water molecules are broken down.

A

They form each: 1 Oxygen, 2 Hydrogen, and 2 electrons

14
Q

Describe what happens to the high-energy electrons that are produced by photosystem 1.

A

Light is absorbed charging the 2 electrons in Photosystem 2 which then travel through, and charge, a H+ pump. They then, along with H+ Ions, help change NADP+ into NADPH.

15
Q

What is the name of the enzyme found in thylakoid membranes that is used to produce ATP.

A

An Enzyme