1.Seen Question
Starch and electric cellulose atomic number 18 both polymers of D-glucose, still they have divers(prenominal) properties and functions.
(a) With the handling of diagrams show how the molecular buildings of amylum and cellulose differ (60 %)
(b)Why do glucose, starch and cellulose have different properties (20 %)
(c) How do the properties of these molecules relate to their function (20 %)
2. Proteins form complex, three dimensional structures stabilised by different types of bond, interaction or commit.
(a) come upon in detail three types of bond, interaction or force that are involved in stabilising the structure of proteins (40 %)
(b) The alpha-helix and beta-sheet are examples of protein secondary structure. What are the main features of these two structures. Where possible use diagrams to illustrate your answer (50 %)
(c)Explain the terms tertiary structure and quarternary structure of proteins (10 %).
3.
(a) How do the smooth ER and rough ER differ in;
(i) appearance (10 %)
(ii) in function (40 %)
(b) stray a diagram to show the detailed structure of a phospholipid molecule and Indicate the location and orientation of the molecules within the cell membrane (20 %)
(c)What are the different classes proteins that would be found in a typical plasma membrane (30 %)
4. (a)Define the quest terms using diagrams where possible (30 %)
i) Phagocytosis
ii) Pinocytosis
iii) Exocytosis
(b)Describe and discuss, with the aid of diagrams, the work at of receptor-mediated endocytosis (70 %)If you want to get a full essay, order it on our website: Orderessay
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