#1
7th December 2014, 08:28 AM
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WBCS question papers for Zoology
Here I am looking for the previous years question papers for Zoology of WBCS can you please provide me this?
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#2
7th December 2014, 10:50 AM
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Re: WBCS question papers for Zoology
Here is the WBCS question papers for Zoology which you are looking for Time Allowed-3 Hours Full Marks-100 Group - A (Answer any three questions.) 1. (a) Describe the ultra structures of Golgi bodies. 8 (b) Write briefly how Golgi bodies are formed. 4 (c) Enumerate principal functions of the Golgi bodies. 5 (d) Name three enzymes found in outer membrane, inner membrane and the matrix of mitochondria. Comment on their functions. 3 2. (a) Name and describe the molecular changes exhibited by ejaculated sperms favouring fertilization. 8 (b) Give diagram and explain the structure of zona proteins. 5 (c) Write short notes on : (i) Role qf yolk in cleavage 31/2 (ii) Ultra structure of sperm 31/2 3. (a) Explain with a diagram the nucleosome model. 6 (b) How from Klinefelter and Turner karyotypes and their corresponding sexual phenotypes, you may conclude that Y chromosome determines maleness in human ? 4 (c) What is specialised transduction ? Explain with example. 5 (d) State the role of RNA polymerase-II in transcription. 5 4. Write notes on any five : (a) Southern blot technique (b) ‘C value paradox (c) X ist gene (d) YAC (e) Sex-influenced traits (f) Shine-Dalgarno Sequence (g) Okazaki fragments. 4x5 5. (a) Explain Hardy-Weinburg equilibrium. 2 (b) Cystic fibrosis is an autosomal recessive disorder, in certain population in North Europe, this disorder show an incidence of 1/2500. What proportion of individuals in this population are carriers for this disease ? Justify your calculations. 6 (c) What do you mean by “stabilizing selection” and “directional selection” ? 4 (d) Point out the phyletic gradualistic trends in the equine evolution. 8 Group-B Answer any two questions. 6. Write notes on any five : (a) Zoological nomenclature (b) Lectotype and syntype (c) ‘OTU‘ (d) \alpha, \beta, \gamma-taxonomy (e) Category (f) Cryptic species (g) Biological species concept. 4x5 7. (a) What is “All-or-Nothing” principle ? 2 (b) Explain all the factors that determine the resting membrane potential of nerve fibres. 4 (c) What are the successive stages of the action potential which we find in a nerve fibre, during transmission of signals ? Explain with diagram. 8 (d) What is gluconeogenesis ? Schematically describe this pathway. 6 8. (a) Discuss briefly the primary, secondary, tertiary and quarternary structure of protein. 8 (b) What is allosteric modulation. 2 (c) What do you know about competitive, noncompetitive and uncompetitive inhibition of enzyme ? 6 (d) What is xerophthalmia and beriberi. 4 |