A level bio cells and cell techniques
what is the cell surface membrane made of
phospholipids
what is an organelle
small cellular structure in the cytoplasm that has a function
what is the function of Dna
to code for protiens
what is the function of a cell wall
helps to keep structure rigid
what is the function of cytoplasm
site of metabolic reactions
what is the function of the cell membrane
semi permeable surface that allows substances to move in or out of the cell
what is the function of ribosomes
site of protiensynthesis
how small are ribosomes in prokaryotes
70S they are 80S in eukaryotes
what is the function if flagellum
allow bacteria to move
what is the function of plasmids
acts as a vector to pass on genes to another bacteria cell process called conjugation
function of capsule
to protect the cell from toxins
what is osmotic lysis
bursting of a cell via osmosis
what is dessication
cells dryint out
what is a eurkayotes cell wall made of and a prokaryotes made of
eukaryotes-cellulose
prokaryotes-murien
what is a monosachharide
a monosachharide is the simplest form of a sugar that cannot be hydrolysed to give a simpler sugar
what is hydrolysis
to break down a compound via chemical reaction with water
what are the folds of the golgi er and mitochondria called
cristae
what is the jelly like substance in the mitochondria
matrix
what is the function of mitochondrion
produces Atp to be released as energy
what is the function if the RER
packs and transports protiens through the cytoplasm
what is the function of the SER
synthesises and transports lipids
function of the golgi apparatus and vesicles
modifies protiens into glyco/lipoprotiens
packs them into vesicles
forms lysosomes
lysosomes
hydrolyse phagocytic cell
autolyse dead cells
exocytsis release enzymes to destroy material
reuse worn out organelles
structure and function of chloroplast
chloroplast envelope-selectively permeable to protiens
protien rich substance called stroma
Grana-stack of 20 to 60 thylakoids which is the site of photosynthesis