1) which of the following is assosiated with the uncoating of COP II vesicle? a.
ID: 218926 • Letter: 1
Question
1) which of the following is assosiated with the uncoating of COP II vesicle?
a. addition of calcium into the vesicle
b. GTP hydrolysis on a GTP switch protein
c. loss of H+ from the vesicle
d. addition of carbohydrates to proteins in the vesicle membrane
2) which of the following is the correct sequence for a protein just being made that is destined for the extracellular enviroment?
a. cis Golgi to trans Golgi to ER to cell membrane
b. trans Golgi to cis Golgi to ER to cell membrane
c. ER to lysosome to cis Golgi to trans Golgi to cell membrane
d. ER to trans Golgi to cis Golgi to cell membrane
e. ER to cis Golgi to trans Golgi to cell membrane
Explanation / Answer
1. GTP is hydrolysed to GDP resulting Sar1-GDP and disassemble the coat. Option b is correct.
2. Protein synthesized in on ER ribosomes transferred to cis-Golgi amd then to trans Golgi. From trans Golgi the vesicle is fused to cell membrane. Option D is correct.
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