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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

  1. Vesicle-sequestered P-selectins are moved to the cell surface.

  2. Vesicle-sequestered αLβ2 molecules are moved to the cell surface.

  3. Integrins are cleaved from the plasma membrane so that the extracellular domain can bind leukocytes.

  4. Secreted glycoproteins trigger leukocytes to initiate “rolling” motility.

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TLS Online TPP Program

#Question id: 11450

#Unit 7. System Physiology – Animal

 The conversion of a stimulus into an action potential by a receptor cell is called ________.
TLS Online TPP Program

#Question id: 20715

#Unit 12. Applied Biology

Under anaerobic conditions microbial electron transfer and respiration can proceed only if
TLS Online TPP Program

#Question id: 23808

#General Aptitude

The concept of connect intelligence is derived from:
TLS Online TPP Program

#Question id: 3287

#Unit 11. Evolution and Behavior

Which statement is not an assumption of the Hardy–Weinberg law?

a. The allelic frequencies (p and q) are equal.

b. The population is randomly mating.

c. The population is large.

d. Locus is di-allelic
TLS Online TPP Program

#Question id: 561

#Unit 1. Molecules and their Interaction Relevant to Biology

Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that: