| 8th October 2014 01:41 PM | |
| Arvind Kumar | Re: WBCS Past Years Solved Question Papers As you are looking for the last year Zoology Question paper of WBCS (Main) Exam, so here I am sharing the same with you 1. (a) Describe the nucleosome model of chromosome structure. 10 (b) Give an account of various phases of cell cycle. 5 (c) Draw the ultrastructure of a mitochondria. 3 (d) What is SEM ? 2 2. (a) What is spermiogcnesis ? Describe the process of spermiogenesis. 2+4 (b) Distinguish between mesolecithal and megalecithal eggs; give one example each. What is a telolecithal egg ? 4+1+2 (c) Give an account of hypoblast formation in chick embryo. 4 (d) What do you mean by capacitation ? 3 3. (a) What is the primary structure of a protein ? 2 (b) What are conjugated proteins ? Give two examples. 2+1 (c) Give examples of water soluble vitamins. 2 (d) What do you mean by a reducing sugar ? 2 (e) What is epimerism ? Give an example. 2+1 (f) Distinguish between gluconeogenesis and glycogenosis. 2 (g) What is facultative reabsoiption of water ? Where does it take place in our body and how does it take place ? 2+1+3 4. (a) What is binomial nomenclature ? 2 (b) What is a living fossil ? 2 (c) Distinguish between sympatric and allopatric speciation. 5 (d) What is Hardy-Weinbcrg equilibrium ? 3 (e) What is cladogenesis ? 2 (f) How do you define a race ? 2 (g) Distinguish between a sibling species and a sub-species. 4 5. (a) What is anticodon ? 3 (b) What are Okazaki fragments ? 3 (c) Name the sugar, pyrimidine and purine bases found in DNA and RNA. 3 (d) State the functions of DNA ligase. 2 (e) What is synaptonemal complex ? 3 (f) What is transcription ? 2 (g) Describe the structure of t-RNA. 4 6. Write short notes : (a) Significance of meiosis. 3 (b) Endoplasmic reticulum. 5 (c) Fertilization cone. 4 (d) Gap junctions. 4 (e) Cholecalciferol. 4 Group—B Answer any two of the following questions. 7. (a) Give Michaelis-Menten equation (derivation not needed). What is Km ? 1+2 (b) Explain “Induced-fit Model” of enzyme action. 5 (c) Define isozymes. 2 (d) What is heteroglycan ? 2 (e) What is iodine number ? 2 (f) Which visual pigment is responsible for dim-light vision ? Give the chemical composition of this pigment. In which part of the eye is this pigment found ? How visual impulse is formed ? 1+1+1+3 8. (a) What is a polocyte or a polar body ? What is its significance in orogenesis ? 2+2 (b) Discuss in brief the induction phenomenon during the development of eye in vertebrates. 5 (c) What is the significance of primitive streak formation during gastrulation in chick ? 4 (d) State the significance of blustocoel formation prior to gastrulation. 2 (e) What is ultrafiltration ? In which part of our body ultrafiltration takes place ? 11/2+11/2 (f) What is renal threshold ? 2 9. (a) Distinguish between : (i) Enzyme and ribozyme. 4 (ii) Bottle neck effect and founder effect. 4 (b) Explain punctuated equilibrium. 4 (c) Describe the experiment of Urey and Miller in connection with the origin of life on earth. 4 (d) How angiotensin II is formed from angiotensinogen ? State the functions of angiotensin II. 2+2 WBCS(Main)-2007 Zoology Paper-II Question Paper | bengalstudents.com |
| 8th October 2014 09:41 AM | |
| Unregistered | WBCS Past Years Solved Question Papers Here I am looking for the last year Zoology Question paper of WBCS(Main) Exam, can you please provide me the same?? |
