1. Which of the following is NOT a membrane lipid?

a)      All of theseare membrane lipids.
b)     sphingolipids
c)     micelles
d)     phospholipids
e)     cholesterol

2. wether during mitosis ormeiosis , sister chromatids are held together by proteins referredto as cohesions. Such molecules must have which of the followingproprties:

A) They must prsist throughout the cell cycle.
B) they must be intact for nuclear envelope reformation
C) They must be removed before meiosis begin
D) They must be removed befoe anaphase can occur
E) They must reattach chromosomes during G1