PYQSide ExamsMy practice

Biotechnology: Principles and Processes · Question 105

AIPMT 2004MCQMedium📈 Topic in 88% papers+4−1
1

The most thoroughly studied of the known bacteria-plant interactions is the :-

  1. Nodulation of Sesbania stems by nitrogen fixing bacteria
  2. Cyanobacterial symbiosis with some aquatic ferns
  3. Plant growth stimulation by phosphate-solubilising bacteria
  4. Gall formation on certain angiosperms by Agrobacterium

Answer

(4) Gall formation on certain angiosperms by Agrobacterium

Solution

As per NCERT, Agrobacterium tumefaciens, a pathogen of several dicot plants, delivers a piece of DNA known as T-DNA to transform normal plant cells into tumour (crown gall) cells.

⇒ This interaction (Ti plasmid, T-DNA transfer and integration) has been studied in the greatest molecular detail and is used to make the Ti plasmid a cloning vector for transgenic plants.

∴ Gall formation by Agrobacterium is the most thoroughly studied bacteria-plant interaction.

Answer: (4)

AIPMT 2004

Keep practising — Biotechnology: Principles and Processes

2

Restriction endonucleases :-

  1. Are used for in vitro DNA synthesis
  2. Are present in mammalian cells for degradation of DNA when the cell dies
  3. Are synthesized by bacteria as part of their defense mechanism
  4. Are used in genetic engineering for ligating two DNA molecules
AIPMT 2004
3

In transgenics expression of transgene in target tissue is determined by :-

  1. Enhancer
  2. Promoter
  3. Reporter
  4. Transgene
AIPMT 2004
4

The Ti plasmid is often used for making transgenic plants. This plasmid is found in

  1. Agrobacterium
  2. Rhizobium of the roots of leguminous plants
  3. Azotobacter
  4. Yeast as a 2 plasmid
AIPMT 2004
5

Which one of the following bacteria has found extensive use in genetic engineering work in plants ?

  1. Xanthomonas citri
  2. Agrobacterium tumefaciens
  3. Bacillus coagulans
  4. Clostridium septicum
AIPMT 2003
6

Which of the following enzymes are used to join bits of DNA ?

  1. Endonuclease
  2. DNA polymerase
  3. Ligase
  4. Primase
AIPMT 2002
7

Manipulation of DNA in genetic engineering became possible due to the discovery of : -

  1. Transcriptase
  2. DNA ligase
  3. Primase
  4. Restriction endonuclease
AIPMT 2002
8

Which of the following cuts the DNA from specific places?

  1. Exonuclease
  2. Alkaline phosphatase
  3. E. coli restriction endonuclease I
  4. Ligase
AIPMT 2001
9

Maximum number of bases in plasmids discovered so far:

  1. 500 kilobases
  2. 5 kilobases
  3. 50 kilobases
  4. 5000 kilobases
AIPMT 2001
10

The bacteria generally used for genetic engineering is:

  1. Clostridium
  2. Pseudomonas
  3. Agrobacterium
  4. Bacillus
AIPMT 2000
11

Plasmid has been used as vector because:

  1. Both ends show replication
  2. It has antibiotic resistance gene
  3. It is circular DNA which has capacity to join to eukaryotic DNA
  4. It can move between prokaryotic and eukaryotic cells
AIPMT 2000

All Biotechnology: Principles and Processes PYQs →

PDFDownload Biotechnology: Principles and Processes PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Zoology chapters
Class 11Animal KingdomStructural Organisation in AnimalsBiomolecules (Biology)Digestion and AbsorptionBreathing and Exchange of GasesBody Fluids and CirculationExcretory Products and their EliminationLocomotion and MovementNeural Control and CoordinationChemical Coordination and Integration
Class 12Human ReproductionReproductive HealthEvolutionHuman Health and DiseaseBiotechnology: Principles and ProcessesBiotechnology and its ApplicationsBiology Experimental Skills