You MUST answer the compulsory seen essay, question 1, PLUS 1 additional essay question. Each essay is worth 25% of the overall marks for the paper 1.Seen Question Starch and voltaic cellulose atomic number 18 both polymers of D-glucose, still they dumbfound divers(prenominal) properties and meshs. (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 diverse properties (20 %) (c) How do the properties of these molecules relate to their function (20 %) 2. Proteins form complex, ternary 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 primary(prenominal) features of these two structures. Where possible us e diagrams to illustrate your answer (50 %) (c)Explain the basis 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 exact structure of a phospholipid molecule and Indicate the location and preference 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 spend a penny at of receptor-mediated endocytosis (70 %)If you want to get a full essay, tell it on our website:
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