Biological molecules

Question 1

what is cholesterol

Answer 1

Cholesterol is a steroid
* It can intercalate into the
membrane:
a) OH group interact with the
polar lipid heads
b) its steroid scaffold interact
with the fatty acids
* Decreases fluidity and
increases flexibility of the
membrane
* Reduces permeability for
soluble molecules

Question 2

;what are the function of small molecules

Answer 2

they act as a building block for macromolecules
they have some other specific function their own right

Question 3

what is the difference between starch and glycogen

Answer 3

animals use glycogen as an energy store while plants use starch as an energy store

Question 4

describe the two forms of starch

Answer 4

amylose is an unbranched version of starch that only contains 1,4 glycosidic bonds
amylopectin is the branched form of starch that contains both 1,4 and 1,6 glycosidic bonds.

Question 5

describe the two forms of starch

Answer 5

amylose is an unbranched version of starch that only contains 1,4 glycosidic bonds
amylopectin is the branched form of starch that contains both 1,4 and 1,6 glycosidic bonds.