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TLS Online TPP Program

#Question id: 1295

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

#SCPH06 I Botany

  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: 14216

#SCPH05 I Biotechnology

The viscosity of fluid decreases with increasing stirrer speed, the fluid would be 
TLS Online TPP Program

#Question id: 4302

#SCPH05 I Biotechnology

Which one of the following proteins is involved in promoter recognition in eukaryotes?
TLS Online TPP Program

#Question id: 5255

#SCPH06 I Botany

Which of the following is a structure that permits conjugation to occur?
TLS Online TPP Program

#Question id: 11674

#SCPH28 | Zoology

If ATP production in a human kidney was suddenly halted, urine production would:
TLS Online TPP Program

#Question id: 15868

#SCPH05 I Biotechnology

If the culture is kept in stationary phase for a prolonged period, the cells may die. Why?
a) due to the time taken for doubling of cell number
b) duration of a cell generation is too large, depending mainly on the plant species.
c) stationary phase is forced on the culture by a depletion of the nutrients
d) due to an accumulation of cellular wastes