CSIR NET Life Sciences December 2008 Paper (Part 12 of 14)
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- Mucous which covers the epithelial lining of stomach and protects it form protease activity is secreted by
- Goblet cells
- Parietal cells
- Microvilli
- Aciner cells
- In a population with two alleles ‘b’ and ‘B’ having allele frequency 0.7 and 0.3 in Hardy Weinberg equilibrium, how many individuals in a sample of 250 can be expected to be heterozygous (bB) ?
- 52
- 105
- 21
- 42
- Starling birds orient themselves by sunlight during migration. If they are kept in capativity with artificial light source form one direction, then
- They will stop migration
- They will orient toward light source
- They will orient themselves with change in 150 angle every hour from direction of light
- Moves all around the artificial light
- Maximum density of dopamine and noradregenic receptor occurs at
- Cerebellum
- Cerebellem
- Medulla oblangata
- Spinal cord
- Chitin occurs in cell wall of
- Bacteria
- Arthropods
- Fungus
- Mollusck
- The emergence of polarity of an embryo is the result of
- Positive and negative charges interacting in early development.
- cytoplasmic differences between cells.
- cytoplasmic determinants within cells.
- All of the above
- Which anticancerous drug is obtained from Catharanthus roseus?
- Taxol
- Vincristine
- Colchicine
- Serpentine
- The principle for formation of image in phase contrast microscopy
- interference of light waves
- Negative staining of object
- Use of fluorscent probes
- Enhancing contrast by differentiating the change in phase of light passed through specimen coming from an angle of cone of light entering through objective lens.
- Yeast with petite colony when crossed with wild type generates no petite colony. The most proable mode of inheritence is
- Chloroplast
- Mitochondria
- Episomal
- Nuclear
- An oligonucleotide DNA sequence tagged with fluroscent tag used to identify unknown gene by hybridisation is termed as
- Probe
- Reporter gene
- Ligand
- C-DNA