plant cell structure

and algal/fungal cells (ish)

what is the function of the chloroplasts?

site of photosynthesis

what is the structure of the chloroplasts?

• double membraned

• grana - sticks of disc like structures called thylakoids (membranes that contain photosynthetic pigment - chlorophyll)

• stroma - fluid filled matrix containing enzymes for photosynthesis

• contain both DNA and ribosomes

what is the structure of the vacuole?

fluid filled sac surrounded by a membrane called tonoplast

what is the function of the vacuole?

• makes cells turgid by pushing cytoplasm against cell wall → provides support

• temporary store of sugars and amino acids

• stores and excretes waste products

• pigments may give cell colour

what is the function of the cell wall?

• provides structural support and strength to the cell

• prevents cell from bursting under osmotic pressure

what is a plant cell wall made up of?

cellulose microfibrals

what is an algal cell wall made up of?

cellulose and/or glycoproteins

what is a fungal cell wall made up of?

chitin, glycan and glycoproteins

outline the similarities in and the differences between the structures of chloroplasts and mitochondria (4):

accept chloroplasts have chlorophyll whereas mitochondria do not