TLS Online TPP Program

#Question id: 1718


When Langerhans' cells differentiate into fully mature dendritic cells (DCs) they:

#Unit 4. Cell Communication and Cell Signaling
  1. Downregulate CD1 expression

  2. Increase their endocytic activity

  3. Increase expression of B7.1

  4. Decrease expression of B7.2

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TLS Online TPP Program

#Question id: 27681

#Unit 1. Molecules and their Interaction Relevant to Biology

The structural database for the Structural Classification of Proteins is

TLS Online TPP Program

#Question id: 19698

#Unit 13. Methods in Biology

What is the configuration of limb lead III during ECG recording?

TLS Online TPP Program

#Question id: 28319

#Unit 5. Developmental Biology

In case of mammalian fertilization slow block to polyspermy occur when enzymes released by the cortical granules modify the zona pellucida sperm receptor proteins such that they can no longer bind sperm. such enzyme is known as____

TLS Online TPP Program

#Question id: 177

#Unit 1. Molecules and their Interaction Relevant to Biology

The titration curve of alanine shows the ionization of two functional groups with pKa values of 2.34 and 9.69, corresponding to the ionization of the carboxyl and the protonated amino groups, respectively. The titration of di-, tri-, and larger oligopeptides of alanine also shows the ionization of only two functional groups, although the experimental pKa values are different. The trend in pKa values is summarized in the table. Which of the following is a reason for this shift in pK values

TLS Online TPP Program

#Question id: 15779

#Unit 5. Developmental Biology

During stem cell regulation extracellular mechanisms leading to intracellular changes that regulate stem cell behaviour. Which of the following is not consider as extracellular mechanisms for stem cell regulation?