TLS Online TPP Program

#Question id: 3032


Which of these statements about prokaryotes is correct?

#Part-A Aptitude & General Biotechnology
  1. Bacterial cells conjugate to mutually exchange genetic material.

  2. Their genetic material is confined within a nuclear envelope.

  3. They divide by binary fission, without mitosis or meiosis.

  4. Genetic variation in bacteria is not known to occur, nor should it occur, because of their asexual mode of reproduction.

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TLS Online TPP Program

#Question id: 18775

#Part-A Aptitude & General Biotechnology

which of the following technique is a highly sensitive and quantitative procedure that utilizes radioactively labelled antigen or antibody

TLS Online TPP Program

#Question id: 18776

#Part-A Aptitude & General Biotechnology

In Western blotting, a protein mixture is separated by electrophoresis; then the protein bands are electrophoretically transferred onto nitrocellulose and identified with 

TLS Online TPP Program

#Question id: 18777

#Part-A Aptitude & General Biotechnology

which of the following technique using antibodies labelled with fluorescent molecules can be used to visualize antigen on or within cells.

TLS Online TPP Program

#Question id: 18778

#Part-A Aptitude & General Biotechnology

which of the following technique provides an unusually powerful technology for the quantitative analysis and sorting of cell populations labelled with one or more fluorescent antibodies.

TLS Online TPP Program

#Question id: 18779

#Part-A Aptitude & General Biotechnology

Flow-cytometric analysis for the detection and measurement of subpopulations of leukocytes, including those of leukaemia, is usually performed using monoclonal antibodies. Why is this the case?
Choose whether each of the following statements is true 
a) Indirect immunofluorescence is a more sensitive technique than direct immunofluorescence
b) Most antigens induce a polyclonal response. 
c) For precipitation to occur, both antigen and antibody must be multivalent.
d) ELISA tests using chemiluminescence are more sensitive than chromogenic ones and precipitation tests are more sensitive than agglutination tests

TLS Online TPP Program

#Question id: 18780

#Part-A Aptitude & General Biotechnology

Which of the following does not participate in the formation of antigen-antibody complexes?