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TLS Online TPP Program

#Question id: 13049

What is the role of goat anti-rabbit IgG horseradish peroxidase conjugate in the experiment?

#Unit 13. Methods in Biology
  1. Antigen
  2. Primary antibody
  3. Secondary antibody
  4. Substrate
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TLS Online TPP Program

#Question id: 2027

#Unit 4. Cell Communication and Cell Signaling

The order of percent of total immunoglobulin in serum is,
TLS Online TPP Program

#Question id: 33229

#Unit 1. Molecules and their Interaction Relevant to Biology

The effects of pH on enzymes depends on a combination of factors: 
(a) Most enzymes are active within only a narrow pH range, typically 5 to 9. 
(b) the ionization states of the amino acid residues involved in the catalytic activity of the enzyme
(c) the variation of protein structure (usually significant only at extremes of pH).
Which of the above is correct
TLS Online TPP Program

#Question id: 5663

#Unit 5. Developmental Biology

Following statements are related to slow block to polyspermy in mammals.

A. A First slow block to polyspermy comes When the cortical granules fuse with the egg cell membrane, they release protein-digesting enzymes which is called as ovastacin that modify the zona pellucida proteins.

B. A second slow block to polyspermy comes from the so-called zinc spark, the release of billions of zinc ions that is induced by the entry of the first sperm, these released zinc ions are seen to bind to the egg cell membrane form a “zinc shield” that prevents further sperm entry.

C. A third slow block to polyspermy occurs at the level of the egg cell membrane and involves Juno.

Which of the following is incorrect?
TLS Online TPP Program

#Question id: 12893

#General Aptitude

A brick 2" thick is placed againsta wheel to act for a stop. The horizontal distance of the face of the brick from the point where the wheel touches the ground is 6". The radius of the wheel in inches is
TLS Online TPP Program

#Question id: 12850

#General Aptitude

A plate on square base made of brass is of length x cm and width 1 mm. The plate weighs 4725 gm. If 1 cubic cm of brass weighs 8.4 gram, then the value of x is :