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Molecular Basis of Inheritance · Question 114

AIPMT 2010 (Mains)MCQEasy📈 Topic in 75% papers+4−1
1

In eukaryotic cell transcription, RNA splicing and RNA capping take place inside the -

  1. Dictyosomes
  2. Ribosomes
  3. Nucleus
  4. ER

Answer

(3) Nucleus

Solution

As per NCERT, in eukaryotes the primary transcript (hnRNA) is processed by splicing, capping and tailing before it is transported out of the nucleus for translation.

∴ Transcription, splicing and capping all occur inside the nucleus.

Answer: (3)

AIPMT 2010 (Mains)

Keep practising — Molecular Basis of Inheritance

2

Which one of the following statements about the particular entity is true?

  1. Nucleosome is formed of nucleotides
  2. Centromere is found in animal cells, which produces aster during cell division
  3. The gene for producing insulin is present in every body cell
  4. DNA consists of a core of eight histones
AIPMT 2010 (Mains)
3

Which one of the following does not follow the central dogma of molecular biology ?

  1. Mucor
  2. HIV
  3. Chlamydomonas
  4. Pea
AIPMT 2010 (Prelims)
4

The one aspect which is not a salient feature of genetic code, is its being –

  1. Specific
  2. Degenerate
  3. Ambiguous
  4. Universal
AIPMT 2010 (Prelims)
5

Select the two correct statements out of the four (A–D) statements given below about lac operon. The correct statements are :

  1. B and D
  2. A and B
  3. B and C
  4. A and C
AIPMT 2010 (Prelims)
6

Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a "triplet"?

  1. Nirenberg and Matthaei
  2. Morgan and Sturtevant
  3. Hershey and Chase
  4. Beadle and Tatum
AIPMT 2009
7

Semi-conservative replication of DNA was first demonstrated in:

  1. Drosophila melanogaster
  2. Streptococcus pneumoniae
  3. Salmonella typhimurium
  4. Escherichia coli
AIPMT 2009
8

Removal of introns and joining the exons in a defined order in a transcription unit is called:

  1. Transformation
  2. Capping
  3. Splicing
  4. Tailing
AIPMT 2009
9

What is not true for genetic code?

  1. It is nearly universal
  2. A codon in mRNA is read in a noncontiguous fashion
  3. It is degenerate
  4. It is unambiguous
AIPMT 2009
10

In the DNA molecule:

  1. the total amount of purine nucleotides and pyrimidine nucleotides is not always equal
  2. there are two strands which run antiparallel one in 5' 3' direction and other in 3' 5'
  3. there are two strands which run parallel in the 5' 3' direction
  4. the proportion of adenine in relation to thymine varies with the organism
AIPMT 2008
11

Which one of the following pairs of nitrogenous bases of nucleic acids is wrongly matched with the category mentioned against it?

  1. Thymine, Uracil — Pyrimidines
  2. Guanine, Adenine — Purines
  3. Uracil, Cytosine — Pyrimidines
  4. Adenine, Thymine — Purines
AIPMT 2008

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