CSIR NET Life Sciences December 2008 Paper (Part 9 of 14)

  1. Diphtheria toxin causes

    1. ADP ribosylation of EF2

    2. ADP ribosylation of EF1a

    3. Blocking activity of RNA polymerase

    4. Blocking DNA replication process

  2. Effect of release of IP3 during signal transduction pathway is

    1. Closure of Ca2 + channel in ER

    2. Increase in intracellular Ca2 + level

    3. Increase of extracellular Ca2 + level

    4. Inactivation of calmodulin proteins

  3. Dorsal mutant in Drosophila will result in

    1. Dorsalization of ventral side

    2. Ventralization of dorsal side

    3. There would be no effect

    4. Anterior-posterior pattern formation will be effected

  4. Intracellular negative potential and extracellular positive potential occurs in

    1. In all cells

    2. In neurons

    3. In kidney cells

    4. In liver cells

  5. A major functional difference between the succinyl CoA-synthetase of plant and animal cell mitochondria is that it

    1. Does not produce ATP in plant cell.

    2. Produce UTP in plant cell.

    3. Produces ATP in plants and GTP in animal.

    4. Produces GTP in plants and ATP in animals.

  6. Among the following which is not monitered as daily potential pollutant

    1. CO

    2. CO2

    3. SO2

    4. NOx

  7. In plant lateral root initiates from

    1. Pericycle

    2. Cortex

    3. Pith

    4. Endodermis

  8. Oxygenase activity of RUBISCO generates

    1. Two molecules of PGA (3C)

    2. Two molecules of Phosphoglycolate (2C)

    3. One molecule each of PGA and phosphoglycolate

    4. Two molecules each of PGA and phosphoglycolate

  9. Plant family having characteristic umbel inflorescence is

    1. Asteraceae

    2. Acanthaceae

    3. Apiaceae

    4. Poaceae

  10. Dendrogram in numerical taxonomy represents

    1. Phenetic similarties

    2. Phlogenetic similaraties

    3. Evoltionary similarties

    4. No similiraties