In cells expressing mutant versions of Sar1 or ARF that cannot hydrolyze GTP, what would be the result?

a. Vesicle coats do not form and vesicle buds pinch off.

b. The mutant proteins cannot trigger disassembly of the coat all available coat subunits eventually become permanently.

c. Unable to fuse with target membranes.

d. Blocking of coat disassembly.

TLS Online TPP Program

#Question id: 16956

#Unit 4. Cell Communication and Cell Signaling

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?

TLS Online TPP Program

#Question id: 16957

#Unit 4. Cell Communication and Cell Signaling

the immune system can be summarized as follows. Which is not correct for immune system?

TLS Online TPP Program

#Question id: 16958

#Unit 4. Cell Communication and Cell Signaling

Plasmacytoma or myeloma tumors secrete large amounts of monoclonal antibodies into the serum and tissue fluids of the patients, and these antibodies can be purified in large quantities. Which statement is true for Bence-Jones proteins?

TLS Online TPP Program

#Question id: 16959

#Unit 4. Cell Communication and Cell Signaling

antigenic determinant is defined as a region of an antigen that makes contact with the antigen-combining region on an antibody. Which statement is true for Anti-isotype antibodies?

TLS Online TPP Program

#Question id: 16960

#Unit 4. Cell Communication and Cell Signaling

antigenic determinant is defined as a region of an antigen that makes contact with the antigen-combining region on an antibody. Which statement is true for allotypic determinants?

TLS Online TPP Program

#Question id: 24555

#Unit 4. Cell Communication and Cell Signaling

Naturally occurring passive form of immunity is

a) maternal IgG crosses the placenta

b) maternal IgE crosses the placenta

c) maternal IgA present in breast milk

d) Maternal IgM present in breast milk