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#Question id: 383


Three buffers are made by combining a 1 M solution of acetic acid with a 1 M solution of sodium acetate in the ratios shown below

1 M acetic acid              

1 M sodium acetate  

Buffer 1: 10 mL

 90 mL

Buffer 2: 50 mL

50 mL

Buffer 3: 90 mL

10 mL

 Which of these statements is true of the resulting buffers?

#SCPH05 I Biotechnology
  1. pH of buffer 1 < pH of buffer 2 < pH of buffer 3

  2. pH of buffer 1 = pH of buffer 2 = pH of buffer 3

  3. pH of buffer 1 > pH of buffer 2 > pH of buffer 3

  4. The problem cannot be solved without knowing the value of pKa.

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#Question id: 27838

#Research Methodology

NISAR Mission is a collaborative project between ISRO and which space agency?

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#Question id: 3534

#SCPH12 I Genetics

Start with a collection of mutants obtained using selections or screens and then characterize their wild functions at the molecular level called ----A------, alternatively, start with a set of specific DNA sequences, mutate them, and observe the phenotypes called --B-----.

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#Question id: 4137

#SCPH01 Biochemistry

Formation of the ribosomal initiation complex for bacterial protein synthesis does not require:

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#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?

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#Question id: 4325

#SCPH28 | Zoology

Cell differentiation always involves