IB SL Photosynthesis

What is the relative wavelength in the visible spectrum of red light and blue light and are these colours absorbed or reflected by chlorophyll?

• A

• B

• C

• D

Tags

NGSS.HS-LS1-5

What is used to reduce NADP in the light-dependent reactions of photosynthesis?

• Conversion of ATP into ADP+Pi

• Electrons from Photosystem I

• Protons from the thylakoid space

• Oxygen released by photolysis of water

During photosynthesis, what happens in the chloroplast at the location labelled lumen?

• Protons accumulate.

• Pyruvate undergoes decarboxylation.

• NADH is oxidized.

• Oxygen is produced.

Tags

NGSS.HS-LS1-5

How can the rate of photosynthesis be measured?

I. By the amount of oxygen produced

II. By the increase in biomass

III. By the amount of carbon dioxide produced

• I only

• I and II only

• I and III only

• I, II and III

What products of the light-dependent reactions are used in the light-independent reactions?

• ATP and NADPH

• NADPH and ribulose bisphosphate (RuBP)

• CO2 and ATP

• ATP and O2

In a chloroplast where are the enzymes of the Calvin cycle located?

• Thylakoid membranes

• Stroma

• Grana

• Outer membrane of chloroplast

What is the source of the oxygen released into the atmosphere in photosynthesis?

• Glucose

• Carbon dioxide

• Chlorophyll

• Water

What occurs during the light-independent reactions of photosynthesis?

• ATP is produced.

• Ribose reacts with carbon dioxide to form glucose.

• Energy for the cycle is provided by the light-dependent reaction.

• Darkness stimulates the conversion of glucose to starch.

What is the structure labelled X?

• Stroma

• Granum

• Crista

• Starch granule

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-3

NGSS.HS-LS2-5

Which type of light is least useful for photosynthesis in terrestrial plants?

• Blue

• Green

• White

• Red