Adaptations of the Chloroplast for Photosynthesis

Question 1

what do the chloroplasts have that help

Answer 1

they have sets of stacked membranes called grana which increase the total area for the absorption of light

Question 2

what is the structure of a granum

Answer 2

each granum consists of many disc-shaped structures (thylakoids) which contain the photosynthetic pigment, chlorophyll

Question 3

what does the matric of the chloroplast contain

Answer 3

the matrix of the chloroplast contains the fluid called stroma, which has enzymes for the dark phase of photosynthesis

Question 4

what else does the stroma contain

Answer 4

the stroma also contains starch granules which are temporary storage sites for starch

Question 5

how does the double membrane help

Answer 5

the double membrane enclosing a chloroplast is permeable to oxygen, carbon dioxide, water and glucose

Question 6

what happens to the enzymes

Answer 6

enzymes required for photosynthesis are synthesised by ribosomes within the stroma