Plant Biochemistry and Metabolism — DU B.Sc. (Hons.) Botany Previous Year Question Papers

All parts of question should be answered together. Q1. (a) Fill in the.blanks (1x5 = 5 marks) i) The synthesis of.complex molecules from simple molecules with the utilization of energy is called ii) In photosynthesis Light reaction occurs in ...„ .,........... „ ..... „ ......and the dark reaction occurs in .................................. iii) For the production of one molecule of Glucose ............ ATP & ............ NADPH2 molecules go through the C3 cycle. iv) ........................... number of molecules of Acetyl Co-A are produced after beta-oxidation of 16 carbon fatty acid. v) The temi enzyme was first named by .............................. a) Expand the following .ii. PEP iii. TAG iv. FAD v. DCPIP (C) Define the following (rdjzj}¢tJg) i. Amphibolic pathway ii. Coupled Reaction iii. Absorption Spectrum iv. Michaelis constant exgiv) Q2. Differentiate between the following (Any Five) (5x3 = 15 marks) ii) Cyclic and Non- Cyclic Photophosphorylation iii) Lock-key and Induced fit hypothesis of enzyme action iv) Substrate level phosphorylation and oxidative phosphorylation v) Competitive and non-competitive inhibition vi) Saturated and unsaturated fatty acids Q3. Write short notes of the following (Any three) (3x5=15 marks) i) Ammonia assimilation in nodules ii) Cyanide resistant respiration iii) Classification of enzymes iv) Blackmans law of limiting factor v) Mobilization of lipids during seed germination Q4. (a) Explain various factors affecting enzyme activity (7 marks) (b) Give an account of Beta oxidation of fatty acids along with its energetics (8 marks) Q5 (a) Discuss in detail Cz cycle and its significance. (6+2=8 marks) (b) Explain the flow of electrons in light dependent phase with the help of a diagram.