Sample Questions - PART 13

Q) Capping occurs when

1. The trascription is complete
2. The trascritption changes from initiation to elongation phase
3. The elongation phase is complete
4. When RNA is in cytoplasm
5. None of the above

Q) The component that act as a DNA mimic in prokaryotic RNA polymerase is

1. Beta component
2. Alpha component
3. Sigma 3.2
4. Sigma 1.1
5. None of the above

Q) Which of the following is not a DNA intercalating agent

1. Ethidium Bromide
2. oxoG
3. Proflavin
4. Acridines
5. Exo 8,9 epoxide of aflatoxin B1

Q) Huntington's disease is a type of
1. Trinucleotide repeat disorder
2. Autosomal recessive disorder
3. Non-Autosomal recessive disorder
4. Non-Autosomal dominant disorder
5. Cardiac disorder

Q) The eukaryotic DNA polymerase respondible for replicating the ribosomal DNA is
1. Pol alpha
2. Pol beta
3. Pol epsilon
4. Pol gamma
5. Pol Delta

Q) The amino acids that are rarely found in alpha helix are
1. Proline and methionine
2. Proline and valine
3. Proline and serine
4. Proline and histidine
5. Alanine and proline

Q) SOS response in prokaryotes repair the DNA damage using
1, Base excision repair
2. Non homologous end joining
3. Mismatch repair
4. Trasletion DNA synthesis
5. Doublestrand break repair

Q) End problem is not seen in
1. Leading strand
2. Lagging strand
3. Linear DNA
4. Circular DNA

Q) Topoisomerases help in
1. Decatenation and catenation
2. Base excision repair
3. Reduce negative supercoiling
4. Recombinational repair
5. Non-homologous end joining

Q) The defect is on a gene that codes DNA helicase causes
1. Werner syndrome
2. Bloom's syndrome
3. Ataxia telangiectasia
4. Hay-Wells syndrome
5. Fibromyalgia

JNU Sample Question - PART 6

Q) A perfect flower must have
1. Pistils
2. Stamen
3. Sepals and petals
4. 1 and 2
5. Only sepals

Q) Vasular cambium forms
1. Primary xylem and phloem
2. Secondary vasular tissues
3. Primary roots
4. Both 1 and 3
5. None of the above

Q) The water potential of pure water is
1. Zero
2. Greater than zero
3. Less than zero
4. Can be zero but can never be less than zero
5. None of the above

Q) Mature xylem has the following organells except
1. Nucleus
2. Mitochondria
3. Chloroplasts
4. Ribosomses
5. None of the above

Q) Sieve tube elements do not have
1. Living cells
2. Nucleus
3. Ribosomes
4.Both 2 and 3
5. None of the above

Q) Collenchyma typically contains
1. Pectin
2. Lignin
3. Cellulose
4. All but not 2
5. All but not 1

Q) Photosynthetically activa chloroplasts are present in
1. All epidermal cells
2. Leaf epidermal cells
3. Guard cells
4. Root epidermal cells
5. None of the above

Q) A cell can expand when the water potentuial in its vacoule is
1. Lower than outside
2. Higher than outside
3. Equal to outside
4. None of the above

Q) Pfr form of phytochrome is
1. Physiologically inactive
2. Formed on exposure to red light
3. Formed on exposure to far-red light
4. Formed only in the seeds
5. None of the above

Q) Long dau plants can be encouraged to flower by interuupting
1. The days with periods of darkness
2, The nights with far-red light
3. The nights with red light
4. The nights with Blue light
5. None of the above