3.5 Photosynthesis Complete

Front

What is the primary function of the light reactions of photosynthesis?

Back

To produce NADPH and ATP

Answer explanation

The primary function of the light reactions of photosynthesis is to produce NADPH and ATP, which are essential for the Calvin cycle and the synthesis of glucose.

Front

What supplies the electrons that are lost in Photosystem I?

Back

The electrons from Photosystem II

Answer explanation

The electrons that are lost in Photosystem I are supplied by Photosystem II.

Front

What is the function of NADP+?

Back

It is an electron carrier

Answer explanation

NADP+ functions as an electron carrier.

Front

Which molecule is not needed for the Calvin Cycle? Options: CO₂, ATP, NADPH, H₂O

Back

H₂O

Answer explanation

H2O is not needed for the Calvin Cycle because it is not directly involved in the carbon fixation process.

Front

Green plants reflect which color of light?

Back

Green

Answer explanation

Green plants reflect green light.

Front

The light reactions occur in the ________, and the Calvin Cycle takes place in the ________.

Back

thylakoid membrane / stroma

Answer explanation

The light reactions occur in the thylakoid membrane, and the dark reactions take place in the stroma.

Front

Where does the carbon used to form glucose come from?

Back

CO₂ in the air

Answer explanation

The carbon used to form glucose comes from CO2 in the air.

Front

Where is glucose synthesized?

Back

Calvin Cycle

Answer explanation

Glucose is synthesized in the Calvin Cycle, not in Photosystem II, Photosystem I, or Glycolysis. The Calvin Cycle is responsible for converting carbon dioxide into glucose during photosynthesis.

Front

When oxygen is released as a result of photosynthesis, it is a direct by-product of: Reducing NADP+, Splitting water molecules, Electron Transport Chain, ATP hydrolysis

Back

Splitting water molecules

Answer explanation

When oxygen is released as a result of photosynthesis, it is a direct by-product of splitting water molecules.

Front

What is the primary function of the Calvin cycle?

Back

Produce simple sugars from carbon dioxide

Answer explanation

The primary function of the Calvin cycle is to produce simple sugars from carbon dioxide.