Cell Biology And Chemistry

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 electric cellulose atomic number 18 both polymers of D-glucose, still they moderate divers(prenominal) properties and roles. (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 divergent properties (20 %) (c) How do the properties of these molecules relate to their function (20 %) 2. Proteins form complex, third 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 briny features of these two structures. Where possible use diagrams to i llustrate your answer (50 %) (c)Explain the call 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 expatiate structure of a phospholipid molecule and Indicate the location and taste of the molecules within the cell tissue layer (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) Exocytos is (b)Describe and discuss, with the aid of! diagrams, the conk out at of receptor-mediated endocytosis (70 %)If you want to get a full essay, range it on our website: BestEssayCheap.com

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