The Chloroplast: Structure & Movement

The video explains the role of chlorophyll and chloroplasts in photosynthesis, detailing the structure of chloroplasts, including the stroma and thylakoids. It also covers how chloroplasts move within cells in response to varying light conditions, highlighting the role of phototrophins in this process.

What is the primary function of chlorophyll in chloroplasts?

• To transport nutrients

• To protect the cell

• To store energy

• To absorb light for photosynthesis

Where do the light-independent reactions of photosynthesis occur?

• In the chlorophyll molecules

• In the stroma

• In the thylakoid lumen

• In the grana

What is the structure within chloroplasts where light reactions take place?

• Stroma

• Grana

• Thylakoids

• Lumen

How do chloroplasts respond to low light conditions?

• They turn sideways

• They align vertically

• They spread out to maximize surface area

• They move to the cell walls

What role do phototrophins play in plant cells?

• They absorb nutrients

• They control chloroplast movement

• They store energy

• They protect against pathogens