Proteins (b) (ii) Synthesis of Membrane Compartments Flashcards
1
Q
- Lipids and proteins are synthesised in the…
A
ER
2
Q
- Lipids are synthesised in…
A
The smooth endoplasmic reticulum (SER) and inserted into its membrane.
3
Q
- The synthesis of all proteins begins in the…
A
Cytosolic Ribosomes
4
Q
- The synthesis of all cytosolic proteins is…
A
Completed here, and these proteins remain in the cytosol.
5
Q
- Transmembrane proteins carry…
A
Signal sequence, which halts translation and directs the ribosome synthesising the protein to dock with the ER, forming RER.
6
Q
- Translation continues after…
A
Docking, and the protein is inserted into the membrane of the ER.
7
Q
Rough ER (RER) has ribosomes…
A
On its cytosolic face
8
Q
Smooth ER (SER) …
A
lacks ribosomes
9
Q
A Signal sequence is…
A
A short stretch of amino acids at one end of the polypeptide that determine the eventual location of a protein in a cell.
