PYQSide ExamsMy practice

Molecular Basis of Inheritance · Question 69

NEET 2018MCQEasy📈 Topic in 75% papers+4−1
1

AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA?

  1. AGGUAUCGCAU
  2. UGGTUTCGCAT
  3. ACCUAUGCGAU
  4. UCCAUAGCGUA

Answer

(1) AGGUAUCGCAU

Solution

As per NCERT, the coding strand has the same sequence as the RNA (polarity too), except that thymine (T) is replaced by uracil (U) in RNA.

Coding strand: 5′ AGGTATCGCAT 3′

mRNA: 5′ AGGUAUCGCAU 3′

Answer: (1)

NEET 2018

Keep practising — Molecular Basis of Inheritance

2

All of the following are part of an operon except

  1. an operator
  2. structural genes
  3. an enhancer
  4. a promoter
NEET 2018
3

The final proof for DNA as the genetic material came from the experiments of

  1. Griffith
  2. Hargobind Khorana
  3. Avery, MacLeod and McCarty
  4. Hershey and Chase
NEET 2017
4

If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered ?

  1. 1
  2. 11
  3. 333
  4. 33
NEET 2017
5

During DNA replication, Okazaki fragments are used to elongate

  1. The leading strand away from replication fork
  2. The lagging strand towards replication fork
  3. The lagging strand away from the replication fork
  4. The leading strand towards replication fork
NEET 2017
6

Which of the following RNAs should be most abundant in animal cell ?

  1. m-RNA
  2. mi-RNA
  3. r-RNA
  4. t-RNA
NEET 2017
7

Spliceosomes are not found in cells of :

  1. Bacteria
  2. Plants
  3. Animals
  4. Fungi
NEET 2017
8

The association of histone H1 with a nucleosome indicates :

  1. DNA replication is occurring
  2. Transcription is occurring
  3. The DNA is condensed into a Chromatin Fibre
  4. The DNA double helix is exposed
NEET 2017
9

Which one of the following is the starter codon ?

  1. AUG
  2. UAG
  3. UAA
  4. UGA
NEET 2016 (Phase 1)
10

Which of the following is required as inducer(s) for the expression of Lac operon?

  1. lactose
  2. lactose and galactose
  3. glucose
  4. galactose
NEET 2016 (Phase 1)
11

A complex of ribosomes attached to a single strand of RNA is known as :

  1. Polypeptide
  2. Okazaki fragment
  3. Polysome
  4. Polymer
NEET 2016 (Phase 1)

All Molecular Basis of Inheritance PYQs →

PDFDownload Molecular Basis of Inheritance PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
Other chaptersBiomolecules (Biology)