"Surface fuzzy coat" made of oligosaccharides, bound to glycoproteins. For cell recognition and adhesion.
Colour of ribosomes in H&E stained slide
Cells with a multilobed nucleus
Cells with a 'clock face' nucleus
Determines if a ribosome is free
The protein that it is synthesising.
The signal peptide
A peptide produced by proteins to be directed to the RER.
What does the signal peptide bind to?
The ER cisternae via signal recognition particle.
Addition of oligosaccharides to proteins to form glycoproteins. It happens in the RER lumen.
Functions of the SER
Lipid metabolism and taking up/storing calcium.
Functions of the Golgi
Sorting, packing and addressing macromolecules.
When secretory vesicles are discharged continuously as they are made.
When secretory vesicles are stored and released in response to a signal.
Layers of the SER, RER or Golgi.
Infoldings of the inner mitochondrial membrane.
Cis side of the Golgi
The side closest to the nucleus.
Trans side of the Golgi
The side closest to the plasma membrane.
A kind of cell that may undergo a sudden release of vesicles as part of an allergic response.
What type of enzymes to lysosomes contain?
When lysosomal enzymes are released in the cell as a result of cell death.
Structure of glycogen granule
Central glycogen core and outer layer of enzymes (glycogen synthase and phosphorylase).
Where do cells involved in steroid synthesis store the cholesterol they need to make the hormone?
In cytoplasmic lipid droplets.
Why do steroid-synthesising cells have a foamy appearance?
They had many lipid droplets.
What is a lipoprotein made of?
Cholesterol, cholesterol esters, phospholipids and apoprotein.
Structure of microfilaments.
Double stranded helix made from actin.
Function of microfilaments.
Amoeboid movement and control of cell shape
Types of intermediate filaments.
Ketains, neurofilaments and vimentin.
Function of intermediate filaments.
Provide mechanical stability.
Structure of microtubules.
Tube of tubulin subunits.
Function of microtubules.
Position organelles and transport.
Disassembles tublin subunits.
Colour of mitochondria in a H&E stained section