OCR A Level Biology Quiz: Chloroplast Structure & Function

What is the function of chloroplasts in plant cells?

• Cell division

• Protein synthesis

• Photosynthesis

• Cellular respiration

What is the size range of chloroplasts?

• 100 - 1000 μm

• 10 - 100 μm

• 2 - 10 μm

• 2 - 10 nm

What is the function of the inner membrane of the chloroplast envelope?

• Provides structural support

• Controls the flow of molecules

• Allows the exit of all molecules

• Allows the entry of all molecules

What is the fluid-filled space inside the chloroplast called?

• Granum

• Thylakoid

• Stroma

• Cytosol

What is the function of the thylakoid membranes?

• Transport of ions

• Storage of sugars

• Synthesis of ATP

• Absorption of light

What are the structures formed by stacked thylakoids called?

• Grana

• Photosystems

• Stroma lamellae

• Chloroplast envelope

What is the function of the photosynthetic pigment molecules in the thylakoid membranes?

• Energy transfer

• DNA replication

• Cellular respiration

• Protein synthesis

Where does the light-dependent stage of photosynthesis take place?

• Stroma

• Thylakoid membranes

• Cytosol

• Granum

What is the function of the chloroplast DNA?

• Regulates gene expression

• Synthesizes ATP

• Codes for all chloroplast proteins

• Codes for some chloroplast proteins

The light ​ (a)   stage of photosynthesis occurs in the ​ (b)   ​ . It involves ​ (c)   , ​ (d)   and ​ (e)   .

• dependent
• thylakoids / grana
• photosystems
• electron carriers
• ATP synthase
• independent
• stroma
• enzymes