TLS Online TPP Program

#Question id: 16956


Polyclonal antibodies are raised against bovine serum albumin in rabbit. Subsequently IgG in the antiserum is purified and digested with either pepsin or papain. Out of the following possibilities, which one is correct?

#Unit 4. Cell Communication and Cell Signaling
  1. Pepsin-digested antibodies cannot precipitate the antigen
  2. Papain-digested antibodies cannot precipitate the antigen
  3. Pepsin digestion will produce two Fab molecules
  4. Pepsin-digested antibodies will lose all interchain disulfide bonds
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TLS Online TPP Program

#Question id: 7312

#Unit 5. Developmental Biology

Following statements regarding to the classes of genes that regulate floral development:

A.  Floral organ identity genes directly control floral identity. The proteins encoded by these genes are transcription factors that likely control the expression of other genes whose products are involved in the formation and/or function of floral organs.

B.  Cadastral genes act as spatial regulators of the floral organ identity genes by setting boundaries for their expression.

C.   Meristem identity genes are necessary for the initial induction of the organ identity genes. These genes are the positive regulators of floral organ identity.

D.  Cadastral genes act as negative regulators of the floral organ identity genes by inhibits their expression.

E.   Meristem identity genes are the negative regulators of floral organ identity genes.

Which of the above statements are true?

TLS Online TPP Program

#Question id: 3296

#Unit 10. Ecological Principles

Some beetles and flies have antler-like structures on their heads, much like male deer. The existence of antlers in beetle, fly, and deer species with strong male-male competition is an example of

TLS Online TPP Program

#Question id: 27479

#Unit 1. Molecules and their Interaction Relevant to Biology

For monosaccharides having  two or more asymmetric carbons, their L or D con configuration can be decided by using

TLS Online TPP Program

#Question id: 710

#Unit 1. Molecules and their Interaction Relevant to Biology

Which is the correct explanation for the effect of the pH changes on the conformations of poly(Glu) and poly(Lys)

TLS Online TPP Program

#Question id: 23487

#General Aptitude

Which one of the following is not an Internet Service Provider (ISP)?