Match the following:

Column I	Column II
A. Anterior necrotic zone	I. Rapid apoptosis that occurs when epithelial cells lose their attachment to the extracellular matrix.
B. Anoikis	II. Devoid of any neural innervation.
C. Aneurogenic	III. Mammalian equivalent to the chick hypoblast and similar to the head portion of the amphibian organizer, it creates an anterior region by secreting antagonists of Nodal.
D. Anterior visceral endoderm	IV. A zone of programmed cell death on the anterior side of the developing tetrapod limb that helps shape the limb.

TLS Online TPP Program

#Question id: 970

#Unit 1. Molecules and their Interaction Relevant to Biology

The first nucleotide product in the de novo biosynthetic pathway of purines is

TLS Online TPP Program

#Question id: 24231

#Unit 4. Cell Communication and Cell Signaling

Match the following classes of classical cadherins with their functions.

 

a. E-cadherin      1.present on many types of epithelial cells

b. N-cadherin      2.present on nerve, muscle and lens cells

c. P-cadherin       3.present on cells in the placenta & epidermis

TLS Online TPP Program

#Question id: 28449

#Unit 5. Developmental Biology

In C. elegans during embryogenesis, an anchor cell and 6 hypodermal vulval precursor cells (VPCs) get involved in forming the vulva. Which of the following statement is incorrect about  VPCs?

TLS Online TPP Program

#Question id: 1735

#Unit 4. Cell Communication and Cell Signaling

In the immunological synapse:

TLS Online TPP Program

#Question id: 19990

#Unit 2. Cellular Organization

If entire genome is encoding than mathematically human should have 10⁶ genes but humans have only 30,000 to 50,000 genes this is representing