Chlorplasts

Question 1

Function of chloroplasts

Answer 1

Site of photosynthesis

Question 2

Structure and function of double membrane

Answer 2

Outer and inner membranes form the chloroplast envelope
Controls entry and exit of substances

Question 3

Structure and function of thylakoids

Answer 3

Flattened sacs inside chloroplast stacked into grana
Contains chlorophyll for light dependant reaction

Question 4

Structure and function of grana

Answer 4

Stacks of thylakoids connected by lamellae
Increases surface area for light absorption

Question 5

Structure and function of lamella

Answer 5

Membranous links between grana
Helps maintain sucture and distribute energy

Question 6

Structure and function of stroma

Answer 6

Fluid filled matrix around grana
Site of light independent reaction
Contains enzymes, sugars and organic acids

Question 7

Structure and function of chrlophyll

Answer 7

Green pigment in thylakoid membranes
Absorbs light energy

Question 8

Structure and function of dna and ribosomes

Answer 8

Chloroplasts contain their own circular dna and 70s ribosomes
Allows them to synthesise some of their own proteins