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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: 674

#SCPH06 I Botany

Proline is not often found in a-helices of proteins because it
TLS Online TPP Program

#Question id: 8939

#SCPH28 | Zoology

Cephalization is most closely associated with which of the following?
TLS Online TPP Program

#Question id: 3282

#SCPH28 | Zoology

Natural selection results in different forms of plants which can survive in contaminated or uncontaminated soil. Type of natural selection is
TLS Online TPP Program

#Question id: 8295

#I Life Science/ Life Sciences Group – I-V

Imagine that a phylogeny was developed for a group of mammals based on bone structure. Which of the following statements would be a reasonable prediction about a phylogeny for the same group of species based on similarities and differences in the structure of a particular enzyme?
TLS Online TPP Program

#Question id: 2942

#I Life Science/ Life Sciences Group – I-V

During mitosis, the breakdown of the nuclear envelope depends on the: