Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 50834
TLS Online TPP Program

#Question id: 1739

Cross-linking of B-cell surface receptors:

#SCPH01 Biochemistry

  1. Is a characteristic feature of thymus-dependent antigens

  2. Lowers the intracellular Ca2+ concentration

  3. Rapidly phosphorylates the Ig-α and Ig-β chains of the surface Ig receptor

  4. Requires contiguity of two B-cell epitopes of different specificity on the same antigen molecule

More Questions
TLS Online TPP Program

#Question id: 19336

#SCPH06 I Botany

Which one of the following biosensors is used for therapeutic applications?
TLS Online TPP Program

#Question id: 3892

#SCPH06 I Botany

The DNA binding motif for many prokaryotic regulatory proteins, such as the lac repressor, is:
TLS Online TPP Program

#Question id: 11606

#SCPH06 I Botany

What will be the effect light in GA biosynthesis?

a) Light basically activates the GA 3β-hydroxylase which adds a hydroxyl group (OH) to carbon 3 of GA20 and convert GA20 to GA1

b) light-induced increase in the transcription of the gene for GA3ox, which converts GA20 to GA1

c) light-induced increase in the transcription of the gene for GA2ox, which converts GA20 to GA29

d) light-induced decreases the transcription of the gene for GA3ox, which converts GA20 to GA1
TLS Online TPP Program

#Question id: 19608

#SCPH05 I Biotechnology

The ion which is iso-electronic with CO is —————
TLS Online TPP Program

#Question id: 1307

#SCPH28 | Zoology

A defect in which of the following intercellular junctions would allow partially digested material to leak passively between the cells of the small intestine into the abdominal cavity?