CSIR NET Life Sciences December 2008 Paper (Part 13 of 14)

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  1. A protein which is to be degraded in proteasome is tagged with

    1. Polyglycine

    2. Polyproline

    3. Ubiquitin

    4. Formyl methionine

  2. Bacteria divides by

    1. Binary fission

    2. Mitosis

    3. Fragementation

    4. Meiosis

  3. Shigella enters into host cell by process of

    1. Cell-Cell fusion

    2. Calthrin coated pits

    3. By exploiting host cell organalles

    4. Phagocytosis

  4. Among the following which activity is absent in bacterial DNA polymerase I

    1. 5--3-Polymerase activity

    2. 3--5-Polymerase activity

    3. 5--3-Exonuclease activity

    4. 3--5-Exonuclease activity

  5. In a hybridization experiment a plant shows phenotypic ratio of 15: 1. How many genes control the trait for observed phenotypic ratio?

    1. One

    2. Two

    3. Three

    4. Polygene

  6. A cross between a red eyed male fly abd white eyed female fly produces red eyed female and white eyed male progenies. While reciprocal cross produces all offsprings with red eyes. The trait for eye color is

    1. Sex linked traits

    2. Sex influenced trait

    3. Sex linked homogametic male

    4. Sex linked heterogametic male

  7. In which biogeographic region you would find Nilgiri-tahr trees

    1. Shola grasslands

    2. Nilgiri forests

    3. Shola grasslands and nilgiri forests

    4. at high altitudes of southwestern ghats

  8. Charateristic dominant grasses in Brahamputra, Ganga and Punjab plains respectively are

    1. Alphinia, Eichinochloa, Cenchrus

    2. Saccharum, Alphinia, Sachharum

    3. Cenchrus, Eichinochloa, Sachharum

    4. Sacharum, Cenchrus, Alphinia

  9. When release factor binds to stop codon on m-RNA during translation, the synthesized peptide chain is transferred to

    1. t-RNA

    2. Water

    3. H +

    4. Amino acids

  10. Location of Glutamate synthatase, an important enzyme in nitrogen assimilation is is

    1. Only cytoplasm

    2. Only chloroplast

    3. Both in cytoplasm and chloroplast

    4. In Endoplasmic reticulum

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