Practice Questions

TLS Online TPP Program

#Question id: 807

Which of the following forces can stabilize a normal DNA double-helix?

#Unit 1. Molecules and their Interaction Relevant to Biology

Base-stacking is a non-covalent interaction that occurs between the relatively hydrophobic bases in the interior of the helix.
Base-pairing is a non-covalent interaction that occurs between adjacent bases in the same strand of the DNA molecule.
The hydrophilic sugar-phosphate groups are on the exterior of the helix where they can interact with each other.
The deoxyribose rings form N-glycosidic bonds with the phosphate groups that link neighboring nucleotides.

More Questions

TLS Online TPP Program

#Question id: 14805

#Unit 4. Cell Communication and Cell Signaling

Secondary immune response to a hapten depends on the:

TLS Online TPP Program

#Question id: 14806

#Unit 4. Cell Communication and Cell Signaling

Which is more immunogenic compound ?

TLS Online TPP Program

#Question id: 14807

#Unit 4. Cell Communication and Cell Signaling

For the stimulation of B-cell responses, lipids are used as haptens and attached to suitable carrier molecules such as the proteins keyhole limpet hemocyanin (KLH) or bovine serum albumin (BSA). If lipid plus KLH introduce in human body and activate immune system, after one month lipid and KLH injected in same person separately, antibody raised against?

TLS Online TPP Program

#Question id: 14808

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements is true ?

TLS Online TPP Program

#Question id: 14809

#Unit 4. Cell Communication and Cell Signaling

Indicate which of the following statements regarding haptens and carriers are true.

TLS Online TPP Program

#Question id: 14810

#Unit 4. Cell Communication and Cell Signaling

Which line is not true for epitopes