Cell structure Flashcards
Inclusion in cytosol
inert articles - lipids etc.
2 main types of organelles
membrane bound and not
2 main types of membrane proteins
- Integral - buried in bylayer
2. Peripheral - not in bylayer, but associate with integral
3 main functions of cell membrane
- Signal transduction - receptor mediated
- adhesion
- transfer
5 main types of cell transfer
- Diffusion
- Active transport
- Bulk transfer
- Exocytosis
- Endocytosis
3 types of diffusion
- Simple - down gradient - fat and uncharged molecules
- Facilitated - integral protein - no work, but selective
- Ion channel - voltage or ligand gated
Features of active trasport
requires E, against gradient
features of bulk transfer
requiires E, conformational changes of membrane
3 types of endocytosis
- pinocytosis - clathrin dep
- receptor endocytosis - clathrin dep
- phagocytosis - clathrin INdep
3 functions of endocytotis
- bring stuff in
- get rid of old membrane
- reduce amount of membrane
Function of endosome
like post office - sorts endocytosed complexes
Part of nucleus
Nucleoplasm, DNA, envelope, pores, nucleaolus
2 types of chroamitin and function and color
- Heterochromatin - condensed - dark blue
2. Euchromitin - more easily transcribed - light blue
Features of mitochondira
2 membranes
matrix - kreb cycle
Features of ribosomes
- non -membrane bound
- site of protein synthesis
