Light Dependent and Light Independent Reactions

Photosynthesis

Light Dependent and Light Independent Reactions

Multiple Select

What are the Reactants of Photosynthesis?

• $$6H_20$$  

• $$C_6H_{12}O_6$$  

• Light Energy

• $$6CO_2$$  

Multiple Select

What are the Products of Photosynthesis?

• $$6H_2O$$  

• $$6CO_2$$  

• $$6O_2$$  

• $$C_6H_{12}O_6$$  

​The Two Main Phases of Photosynthesis

​The First Phase Names:

​Light Reactions

​Light Dependent Reactions

​

Photosystems of

​the Electron Transport

​Chain

The Second Phase Names:​

​Dark Reactions

​Light Independent Reactions

​Calvin Cycle

Multiple Choice

How many Main Phases are there in photosynthesis?

• 3

• 6

• 2

• 1

The Light Reactions​

​aka: Light Dependent Reactions and

​Photosystems of Electron Transport Chain

Multiple Select

What are the reactants for Light reactions?

• NADP+

• Water

• Sun Energy

• ADP

​Photolysis

Fill in the Blank

What happens to the water molecule in photolysis?

​Electron Transport Chain

​Takes place in the Thylakoid Membrane and makes up the light reactions of photosynthesis.

Photosystem II (PS2)

• ​Discovered second

• ​Water is split into oxygen and hydrogen ions releasing electrons.

• Hydrogen ions (H+) are created on the lumen(inner) side of the thylakoid membrane.

​Photosystem I (PS1)

• ​The energized electron passes through molecules to PS1 where it's used to make NADPH from NADP+ and a Hydrogen Ion (H+)

​Electron Transport Chain

​ATP Synthase

​A protein that pumps Hydrogen ions (H+) across the thylakoid membrane, creating a voltage difference across the membrane. This creates energy used for the production of ATP.

​

​Rotates like a rotary engine!!

​

​ADP and P are turned into ATP

Multiple Select

What are the products of the Light Reactions?

• NADPH

• ATP

• Oxygen

• Glucose

​Dark Reactions

​AKA: Light Independent Reactions, Calvin Cycle

Multiple Select

Which are the reactants for the dark reactions?

• NADPH

• ATP

• Carbon Dioxide

• $$O_2$$  

​Dark Reactions

​

Carbon Fixation

Multiple Select

The dark reactions use which of the following to make glucose?

• Carbon Dioxide

• NADPH

• Water

• ATP