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BIRLA INSTITUTE OF TECHNOLOGY AND SCIENCE, PILANI
FIRST SEMESTER 2012-13 MICROBIOLOGY (BIO C241 & BIO F212)

COMPREHENSIVE EXAMINATION (Part-A)

Total Marks: 20 Max. Time: 45 minutes Date: 08.12.12

Max time: 1 hour Max marks: 50 Date: 03.12.12
1. The exam is divided into Part-A (Closed-book type) and Part-B (Open-book type). You are now having Part-A of the question paper.
2. Answer this part of the exam in the space provided.
3. You have a maximum of 45 minutes to answer Part-A, but you can turn in the paper any time after 15 minutes to the invigilator to collect Part-B.

NAME: …………………………………..…… ID No.: ……………………………

Q1. Match the following. Write answer in given space. [1M ( 5]

(i) Ciproflaxacin (a) inhibits protein synthesis (ii) Ethambutol (b) inhibits RNA synthesis (iii)Intein (c) Inhibits incorporation of mycolic acid in membrane (iv)Nitrosomanas (d) does not appear in functional RNA (v)Rifampicin (e) does not appear in functional protein (f) carry out nitrogen fixation (g) member of nitrifying bacteria

Ans: (i) (ii) (iii) (iv) (v)

Q2. Write 'T' for true and 'F' for false statement/s given below. [1M ( 5]

(i) Bactoprenol is a lipid carrier used in synthesis of peptidoglycan. (ii) Disinfectant is used to remove pathogenic bacteria from inanimate objects. (iii) trp operon contains leader sequence which can be translated. (iv) After death of nodulated plant, rhizobial bacteriod released in soil colonize other plant and continue cycle. (v) Secondary treatment of sewage water is truly biological event.

Ans: (i) (ii) (iii) (iv) (v)

Q3. Scientists working with DNA in vitro often store it in solutions that contain

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