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CSIR JRF NET Life Sciences Exam: December 2016: Model Question Paper- Set 1/5


csir net jrf december 2016 question paper

CSIR JRF NET Life Sciences Examination: December 2016
Model Question Paper with Answer Key and Explanations – Set 1/5

1. The metal component of Nitrogenase enzyme is:

a.       Mananese
b.      Molybdenum
c.       Copper
d.      Zinc

2. The only plant hormone which is NOT translocated from the cells producing it:

a.       Auxin
b.      Ethylene
c.       Cytokinin
d.      Gibberillic acid

3. Ribosomal rRNA in eukaryotes are transcribed by:

a.       RNA Polymerase I
b.      RNA Polymerase II
c.       RNA Polymerase III
d.      RNA Polymerase I and III

4. RNA-DNA hybrid always adopt A form because of:

a.       Steric hindrance of –OH group in RNA
b.      Steric hindrance of –OH group in DNA
c.       Coiling of the molecule
d.      Presence of Uracil base in RNA

5. Which plant is the most efficient converter of solar energy?

a.       Wheat
b.      Sugarcane
c.       Rice
d.      Banana

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ICMR JRF Practice Question Paper for July 2016 Examination (Part 5)


icmr papers for practice

(1). ABA catabolism is mediated by

a.       ABA-8’ carboxylase
b.      ABA-8’ hydroxylase
c.       ABA-8’ aminotransferase
d.      ABA-8’ oxygenase

(2). Nodulating genes in Rhizobium are influenced by the presence of which one of the following in the roots?

a.       Flavones
b.      Lignin
c.       Tannins
d.      Cellulose

(3). Which of the following techniques is used for the evaluation of phylogenetic trees?

a.       Null hypothesis
b.      Bootstrapping
c.       Chi-square
d.      Probability

(4). One PAM means one accepted point mutation per

a.       102 residues
b.      10 residues
c.       103 residues
d.      104 residues

(5). Intestinal flora cannot digest

a.       Cellulose
b.      Lignin
c.       Pectin
d.      Starch

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ICMR JRF Model Question Paper July 2016 Part 4 (ICMR JRF Mock Test)


ICMR JRF Life Science Exam July 2016
(Practice Questions with Answer Key Part 4)

icmr jrf july 2016 question paper

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(1). What are zooxanthellae?

a.       Deep sea dwelling brightly pigmented fish
b.      Algae living in corals
c.       A species of crab
d.      Xanthomonas infected zooplankton

(2). Hemophilia A and Hemophilia B have nearly identical phenotypes, but they result from mutations in different gens on the X chromosome. This is an example of

a.       Locus heterogeneity
b.      Epistatic interaction
c.       Double heterozygosity
d.      Variable expressivity

(3). Natural killer cells can be detected in human peripheral blood using

a.       Anti-cd3 antibody
b.      Anti-cd25 antibody
c.       Anti-cd69 antibody
d.      Anti-cd16 antibody

(4). Balanced genetic polymorphism occurs when there is selection against

a.       Heterozygotes
b.      All genotypes
c.       All homozygotes
d.      Only homozygous recessive

(5). Xth nerve is an example of

a.       Mixed cranial nerve
b.      Sensory cranial nerve
c.       Spinal nerve
d.      Motor nerve

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CSIR JRF NET Life Sciences December 2015 Examination Model Question Paper with Answer Key and Explanations Part 02 (Biology MCQ 017)


Biology MCQ 017


NET December 2015 Model Question

(1). Arabidopsis and rice have diploid chromosome number of 10 and 24, respectively. Assuming no crossing over taking place, genetic variation among F2 individuals in a genetic cross is likely to be:

a. Same in both species but not zero
b. More in Arabidopsis
c. More in rice
d. Zero in both the species

(2). In tryptophan operon, tryptophan acts as:

a. Repressor
b. Activator
c. Co-repressor
d. Co-activator

(3). Which of the following statement is CORRECT?

a. Plants adapted to cold environment have higher ratio of ‘unsaturated to saturated’ fatty acids in their membrane compared to those adapted to hot environment
b. Plants adapted to cold environment have lower ratio of ‘unsaturated to saturated’ fatty acids in their membrane compared to those adapted to hot environment
c. Plants adapted to cold environment have same ratio of ‘unsaturated to saturated fatty acids in their membrane compared to those adapted to hot environment
d. Plants do not have any unsaturated fatty acids in the membraneContinue reading

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CSIR JRF NET December 2015 Examination: Life Sciences Model Question Paper with Answer Key and Explanations Part 01 (Biology MCQ 016)


Biology MCQ 016


CSIR NET JRF Life Sciences Free Online Coaching and Model Online Questions

(1). A electron microscope has higher resolution as compared to the light microscope. This is because:

a. The wavelength of an electron is longer than the wavelength of light
b. The wavelength of an electron is shorter than the wavelength of light
c. The electrons can penetrate the sample better
d. They use different stains

(2). Nucleolus is involved in the synthesis of:

a. rRNA
b. tRNA
c. DNA
d. mRNA

(3). When changes in the phenotype or gene expression occur without changes in the underlying DNA sequence, the phenomenon is called:

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