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CSIR JRF NET Life Sciences December 2010 Original Solved Question Paper with Answer Key as PDF


NET Life Science Solved Question Paper

CSIR JRF NET Life Sciences December 2010 Solved Question Paper PDF

Official / Original Previous Year (Old) Solved Question Paper of CSIR Junior Research Fellowship (JRF) and National Eligibility Test (NET) Life Sciences (XL) Examination Dec 2010  with Answer Key PDF. CSIR aspirants can download the question paper as single PDF file for your exam preparation. Please feel free to inform us for any mistakes in the answer key provided.

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ICMR JRF 2017 Model Question Paper with Answer Key (ICMR MCQ – 07)


ICMR JRF July 2017 Model Questions

ICMR JRF Life Science Exam July 2017
Model Question Paper (ICMR MCQ – 07)

(Practice Questions with Answer Key)

(1). Which of the following characteristic differentiate lysosome from other cell organelles?

a.       Lysosome is a micro organelle
b.      Lysosome is a single membrane bounded organelle
c.       Lysosomes present only in plants
d.      All the above

(2). The main function of carotenoid in photosynthesis is:

a.       Light absorption
b.      Prevention of photo-oxidation of chlorophyll
c.       Acts as light absorbing center
d.      Acts as the source of electrons

(3). Most essential features required to maintain a plasmid in a host cell is:

a.       Ability to transfect cells
b.      Antibiotic resistance
c.       Origin of replication and marker for selection
d.      Capacity to insert into the host genome

(4). Which of the following is a softwood tree?

a.       Mahogany
b.      Sal-tree
c.       Rosewood
d.      Cyperus

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Free Net Life Science Study Materials

CSIR JRF NET Life Sciences June 2017 Original Solved Question Paper (Download PDF)


CSIR Life Sciences June 2017 Answer Key

CSIR JRF NET Life Sciences June 2017 Solved Question Paper PDF

Official / Original Previous Year (Old) Solved Question Paper of CSIR Junior Research Fellowship (JRF) and National Eligibility Test (NET) Life Sciences (XL) Examination June 2017  with Answer Key and Explanations as PDF. CSIR aspirants can download the question paper as single PDF file for your exam preparation. To download the question paper as single PDF file, please click on the download button below. Feel free to ask any doubts or clarifications.

To download the question paper as a single PDF file, please click on the link below.

To download the question paper, please click on the link below

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ICMR JRF July 2017 Exam Model Question Paper (ICMR MCQ 06)


ICMR JRF Life Science Exam July 2017
Model Question Paper (6)
(Practice Questions with Answer Key)

ICMR JRF Model Question Paper

1.  The exact function of leg hemoglobin in the root nodule induced by Rhizobium in legume plants is:           

a.       Transport of oxygen
b.      Transport of Nitrogenase to the nodule
c.       Transport of nitrates from the nodule
d.      Protection of Nitrogenase enzyme

2. The genome of CaMV (Cauliflower Mosaic Virus) is:

a.       Single stranded RNA
b.      Single stranded DNA
c.       Double stranded DNA
d.      Double stranded RNA

3. The Wallace line separates:

a.       Australia from Asia
b.      Japan from Philippines
c.       India from Madagascar
d.      Europe from Africa

4.  Parthenium is a ______.

a.       K selected species
b.      r selected species
c.       Hydrophyte
d.      Parasite

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CSRI JRF NET Life Sciences June 2017 Model Question Paper Set- 4


biological significance of hydrogen bonds in water

CSIR JRF/NET Life Science Exam June 2017 (I)
Model Question Paper 4/5
(CSIR MCQ011: Practice Questions with Answer Key)

1.  Penicillin-resistant bacteria produce β-lactamase which inactivates penicillin by:

a.       Esterifying the carboxyl group
b.      Oxidizing S atom
c.       Hydrolyzing the side chain
d.      Hydrolyzing the C-N bond

Ans. (d)

β-lactamases or penicillinase are a class of enzymes produced by some bacteria which degrade penicillin antibiotic and thereby impart resistance against penicillin. All penicillin antibiotics contain a β-lactum ring structure which is essential for the antibiotic activity. The β-lactamase enzyme will degrade the β-lactum ring and thus inhibit the antibiotic properties.

2. Pseudo-murein is present in cell wall of:

a.       Streptococci
b.      Staphylococci
c.       Methanococci
d.      Micrococci

Ans. (c). Methanococci

Methanococci is an Archaebacteria.

Pseudo-murein or pseudo-peptidoglycan is a major cell wall component of some Archaebacteria. It is structurally different from the peptidoglycan of the true bacteria. However, it is functionally similar to the peptidoglycan wall of bacteria. Pseudo-murein is a hetero-polysaccharide of N-acetylglucosamine and N-acetyltalosaminuronic acid connected by β-1,3-glycosidic bonds. Lysozyme enzyme is unable to degrade the pseudo-murein cell wall.

Learn more: Comparison table of Bacteria, Archaea and Eukarya

3. Bacteria that can penetrate intact corneal epithelium is:

a.      Pseudomonas aeruginosa
b.      Staphylococus aureus
c.       Listeria monocytogenes
d.      Yersinia pestis

Ans. (b). Staphylococus aureus

4. Which of the following bacterial toxins does not have ADP-ribosyl transferase activity:

a.       Cholera toxin
b.      Diphtheria toxin
c.       Exotoxin A
d.      S aureus α toxin

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