Practice Questions

TLS Online TPP Program

#Question id: 1295

What signal is released by endothelial cells to recruit circulating leukocytes?

#Unit 4. Cell Communication and Cell Signaling

Vesicle-sequestered P-selectins are moved to the cell surface.
Vesicle-sequestered αLβ2 molecules are moved to the cell surface.
Integrins are cleaved from the plasma membrane so that the extracellular domain can bind leukocytes.
Secreted glycoproteins trigger leukocytes to initiate “rolling” motility.

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TLS Online TPP Program

#Question id: 10609

#Unit 10. Ecological Principles

The observation that members of a population are uniformly distributed suggests that

TLS Online TPP Program

#Question id: 9155

#Unit 9. Diversity of Life Forms

The success of plants extending their range northward following glacial retreat is primarily determined by ________.

TLS Online TPP Program

#Question id: 8916

#Unit 9. Diversity of Life Forms

What do animals as diverse as corals and monkeys have in common?

TLS Online TPP Program

#Question id: 23754

#General Aptitude

Which one of the following is always found in 'Bravery'?

TLS Online TPP Program

#Question id: 936

#Unit 1. Molecules and their Interaction Relevant to Biology

At neutral pH, the main ionic form of ammonia is ________.