anatomy of a celll Flashcards
cytoskeleton
dtermines shape and fluidity of thr cell
mitochondria
energy production
RER
protein synthesis
SER
cholesterol and lipid synthesis
golgi
modification and pakcaging of secretions
Transport vesicles arrive at the Golgi from the SER/RER
lysosomes
hydrolytic enzymes for intracellular digestion
nucleus
contains genetic code
inclusions
components that have been synthesised by the cell itself
microfilaments
composed of the protein actin
intermediate filaments
composed of six main proteins, which vary in different cell types
microtubules
composed of 2 tubulin proteins; alpha and beta
cnetrosome
organising centre where microtubules originate
kinesin
atpase that moves towards cell periphery
dynein
atpase that moves tpward cell centre
location of rna syntheis s
nucleus
where are trna and mrna transcribed
nucelus
where is rrna transcribed
nucleolus
euchromatin
DNA that is more dispersed and is actively undergoing transcription
heterochromatin
DNA that is highly condensed and not undergoing transcription
where are ribosomes formed
nucelolus
small subunit of ribosomes
binds rna
large subunit of ribosomes
catalysis formation of peptide bonds
roles of golgi
Adds sugars
Cleaves some proteins
Sorts macromolecules into vesicles.
cristae
what the inner membrane of mitochondria are folded to form which act to increase SA
What junctions prevent diffusion
occluding/ tight/ zonula occludens
anchoring/ zonula ahderens
: Link submembrane actin bundles of adjacent cells.
desmosomes
link submembrane intermediate filaments of adjacent molecules
