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#Question id: 759


The Watson and Crick structure of DNA refers to:

#SCPH05 I Biotechnology
  1. The B form

  2. a right-handed helix with 10 base-pairs per turn

  3. The bases in the center, held together by hydrophobic interactions and phosphate bonding.

  4. a and b

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TLS Online TPP Program

#Question id: 294

#SCPH28 | Zoology

Which of the following pairs of amino acids would you predict to only participate in Van der Waals interactions in the three dimensional folding of a protein:

TLS Online TPP Program

#Question id: 27878

#Research Methodology

Random sampling is also called _____________.

TLS Online TPP Program

#Question id: 3688

#SCPH06 I Botany

Which of the following enzyme has a unique ability to introduce positive and negative supercoiling of the DNA and it is the target for antibacterial agents such as ciprofloxacin/quinolones?

TLS Online TPP Program

#Question id: 603

#SCPH05 I Biotechnology

Nonclassical competitive inhibition involves ________.

TLS Online TPP Program

#Question id: 10542

#I Life Science/ Life Sciences Group – I-V

Following are certain strategies used by pathogen to attack over the host plant that describe plant-pathogen interactions:

                      I                                                                                             II

A. Necrotrophic pathogens                              i) most of the plant tissue remains alive and only minimal cell damage can be observed, as the pathogens feed on substrates provided by their host

B. Biotrophic pathogens                                 ii) In which the host cells are kept alive as described for biotrophic  Pathogens and followed by a necrotrophic stage, in which the pathogens can cause extensive tissue damage

C. Hemibiotrophic pathogens                         iii) attack their host by secreting cell wall–degrading enzymes or toxins, which eventually kill the affected plant cells, leading to extensive tissue maceration. This dead tissue is then colonized by the pathogens and serves as a food source

Which of the following above combination is correct?