CELL BIOLOGY Below are mutliple choice questions Dont mind t

CELL BIOLOGY. Below are mutliple choice questions. Don\'t mind the circled answers. Please provide me with the correct answers and maybe a little explanation as to why you chose that one Thank you SOOO MUCH!!

Artificial membranes with which of the following would have the most highly mobile phospholipids and lowest transition temperature (listed as number of carbons and number of double bonds in the constituent phospholipids)? a. 18 carbons with l double bond 6 14 carbons with 2 double bonds c. 20 carbons with 2 double bonds d. 16 carbons with no double bonds e. 18 carbons with no double bonds 42. N-linked glycosylation occurs in the ER and involves the transfer of a large sugar group onto a. the amino terminus of proteins. b. phospholipids. C, arginine residues. d. cysteine residues. e. None of the above is a corr ect nswer

Solution

41. the membrane fuidity increases with an increase in no. of carbons and double bonds therefore the correct option will be:

20 carbons with 2 double bonds

42. in N linked glycosylation, the glycan is attached to the amide nitrogen of aspargine residue of a protein,

therefore : none of the above is correct

45: non polar and small molecules can freely pass through the cell membrane therefore,

CO2 would freely pass through it most rapidly

46. the interiors of the ER, golgi, endosomes and lysosomes communicate through vesicles that bud off from one organelle to other , therefore that is the correct choice.