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Pune University - SY BSc (Sem - I) VOC BIOTECH : Paper - I, April 2010

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Total No. of Questions : 4] P293 [Total No. of Pages :2 [3717] - 137 S.Y. B.Sc. BIOTECHNOLOGY VOC - Biotech - 211 : Cell and Molecular Biology (Paper - I) (New Course) (Vocational) (Sem. - I) Time : 2 Hours] Instructions to the candidates: 1) 2) 3) [Max. Marks : 40 All questions are compulsory. Figures to the right indicate full marks. Draw neat labelled diagrams wherever necessary. Q1) Answer each of the following (1 - 2 lines) : a) What are lysosomes? b) Define passive transport. c) What are carrier proteins? d) Give the meaning of the term polycistronic gene . e) Mention main role of Rho factor in transcription. f) What are okazaki fragments? g) Mention initiation factors essential for transcription. h) Give role of ligase in DNA replication. i) Mention the types of cell-junctions. j) [10] What is antport? Q2) Attempt any two of the following : a) Discuss the various functions of chloroplast. b) Describe the structure of prokaryotic ribosome. c) [10] Give an account of extracellular matrix. P.T.O. Q3) Write short notes on any two of the following : a) Programmed cell death. b) Mismatch repair of DNA. c) [10] Membrane proteins. Q4) What is DNA damage? Enlist the agents responsible for DNA damage and add a note on excision repair mechanism. [10] OR Give an account of separation of cell organelles. kbkb [3717]-137 2

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Additional Info : S.Y. B.Sc. Biotechnology (Semister - I), VOC - Biotech - 211 : Cell and Molecular Biology (Paper - I) (New Course) (Vocational), Pune University
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