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cell structure - organelles - Coggle Diagram
cell structure - organelles
nucleus
structure
nuclear pore: mRNA enter/exits
nuclear envelope: 2 membranes/fluid between
nucleolus: makes RNA + ribosomes
chromatin: DNA wound around proteins
function
uses DNA code to make proteins
endoplasmic reticulum
smooth ER
flattened membrane bound sac
transports lipids
rough ER
transports proteins
golgi apparatus
receives protein from rough ER - modified and packaged to vesicle
vesicle
contains modified + repackaged proteins
moved by motor proteins across cytoskeleton
mitochondria
structure
outer membrane
intermembrane space
inner membrane - folds inwards (cristae)
matrix
function
site of respiration to produce ATP which is hydrolysed to release energy
cellulose cell wall
network of strands - strong
rigid by turgor pressure - support to cell + whole plant
permanent vacuole
controls turgor pressure
contains sap
chloroplasts
structure
outer
inner
thylatoid membrane - built in pigments - absorb light
stroma - liquid part
function
site of photosynthesis
ribosomes
small subunits + large subunit - proteins +rRNA
70 ribosomes in prokaryotes
80 ribosomes in eukaryotes
site of protein synthesis - mRNA translated
centrioles
microtubules - protein fibres
make spindle fibres (mitosis)
only in animals
cillia + flagella + undulipodia
cillia are shorter and not part of the plasma membrane
9+2 arrangement of microtubules
vesicles
lysosome
hydrolytic enzymes
transports across cell when needed for hydrolysis