BSc Sem IV 2022 2023 Mar 2023 BIOCHEMISTRY I Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 State True or False: 4 marks
   • (i) The study of structure and function of the total protein component of the cell is
   • (ii) Animal and plant studies have no specific advantage to study
   • (iii) Histology means ‘study of plants
   • (iv) Cell disruption is a method or process for releasing biological molecules from outside a
2. Q3 B) Write short notes on: (Any three) 9 marks
   • (1) Enzymatic permeabilization
   • (iv) Importance of biochemical investigation
   • (v) Arabidopsis thaliana as an experimental model
3. Q3 C) Answer the following: (Any two) 12 marks
   • (i) Write an elaborate note on C. e/egans and as model organisms With the help of a flow chart the steps involved in isolation of different cell Write a note on automated and indirect cell counting
   • (iv) Write a detailed note on cell separation on the basis of its density
4. Q4 A) Define and explain: (Any five) 10 marks
   • (i) Ball mills
   • (ii) Effect of temperature on enzymatic reaction
   • (iv) Diffusion
   • (v) Effect of substrate concentration on enzymatic reaction
   • (vii), Homogenizer
5. Q4 B) Write short notes on: (Any three) 15 marks
   • (i) Enzyme kinetics
   • (ii) Single and bi-substrate reaction
   • (iii) Structure of vasopressin and its physiological role
   • (iv) Write a difference between progesterone and follicle stimulating hormone
   • (v) E.coli as a model organism
   • (vi) Biochemical investigation of vertebrates VCD S.Y.B.Se Sem IV Biochemistry | Marks 100 All the questions are compulsory. Choice is internal
6. Q2 Figures to the right indicate full marks
7. Q3 All questions carry equal marks
8. Q1 A) State True or false: 4 marks
   • (1) Ribozyme is an enzyme
   • (11) The enzyme which hydrolyses starch to maltose is amylase acts as a cofactor reaction depends upon the shape of catalyst, size of reactant and product molecules then the reaction is called shape-selective catalysis
9. Q1 B) Write short notes on: (Any three) 9 marks
   • (i) Enzymes and its classification
   • (ii) Properties that differentiate an enzyme from a catalyst (ii1)Enzymes that join the ends of two strands of nucleic acids
   • (v) Role enzymes in the preparatory phase of glycolysis
   • (vi)Role of enzymes in the payoff phase of glycolysis
10. Q1 C) Write elaborate notes on: (Any two) 12 marks
    • (i) Mechanism of enzyme reaction
    • (iii) Reversible enzyme inhibition and non-reversible enzyme inhibition
    • (iv) Glycolysis
11. Q2 A) State True or False: 4 marks
    • (i) Ethylene is not a plant growth hormone ACTH is an endocrine hormone FSH secreted by ovary chemical name of T; is thyroxine
12. Q2 B) Answer the following: (Any three) 9 marks
    • (i) Senescence
    • (ii) Autocrine
    • (iv)Function of ADH
    • (v) Endocrine hormone
    • (vi)Gibberellin
13. Q2 C) Answer the following: (Any two) 12 marks
    • (i) Write difference between endocrine and exocrine gland
    • (ii) Explain in detail the mode of action of water soluble hormones
    • (iii)Describe the hierarchy of the endocrine system
    • (iv)Enlist the function of thyroxine

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