Photosynthesis: Light Dependant Reactions Flashcards Preview

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Flashcards in Photosynthesis: Light Dependant Reactions Deck (17):
1

What is photosynthesis and what is the chemical equation

The process used by plants to produce glucose

6 CO2 + 6 H2O ——-> C6H12O6 + 6 O2

Carbon dioxide + water ——> glucose + oxygen

2

What are the three stages of photosynthesis

1. Capturing light energy

2. Using captured light energy to make ATP and NADPH

3. Using ATP and NADPH to make glucose from CO2

3

Photosynthesis in the chloroplasts occur at the

Thylakoids (stacked discs)

Stroma (liquid like substance)

4

What is the function of chlorophyll a

Absorbs light energy from blue-violet and red spectrum of visible light

Only pigment that can transfer light to the reactions of photosynthesis

5

What is the functions of accessory pigments? Give an example

Capture light energy and transfer it to chlorophyll a

Assist in more efficient transfer of energy

Ex. Chlorophyll b absorbs blue-violet and red visible light

6

Where are accessory pigments located

In the antenna complex within photo system one and two

7

Chlorophyll a is the _________ of the ETC

Reaction centre

8

Stage one of light reactions is called

Photoexcitation

9

Photoexcitation does what

Absorbs energy in the photosystems

10

Photosystem 2 contains

Chlorophyll a P680

11

Photosystem 1 contains

Chlorophyll a P700

12

Stage 2 of light reactions is called

Electron transport

13

E- transport stage does what

Excited e- are transferred through series of compounds that reduce NADP to NADPH and pumps h+ into thylakoid space

14

What is stage 3 of light reactions called

Chemiosmosis

15

What does chemiosmosis do

H+ gradient is used to make ATP via ATP synthase

16

The inside of the thylakoid membrane is called

The lumen (inside liquid)

17

The outside of the thylakoid membrane is called

The stroma (outside liquid)