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TLS Online TPP Program

#Question id: 1563

A nonfunctional CD4 protein on a helper T cell would result in the helper T cell being unable to ________.

#4. Cell Communication and Cell Signaling

  1. respond to circulating viral antigens

  2. lyse tumor cells

  3. stimulate a cytotoxic T cell

  4. interact with a class II MHC-antigen complex

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TLS Online TPP Program

#Question id: 23513

#Aptitude

The most significant impact of volcanic eruption has been felt in the form of:
TLS Online TPP Program

#Question id: 3459

#11. Evolution and Behavior

A vampire bat sharing blood with another bat that is not its kin is an example of ________.
TLS Online TPP Program

#Question id: 23501

#Aptitude

The great Indian Bustard bird is found in
TLS Online TPP Program

#Question id: 4152

#3. Fundamental Processes

The pathway for polypeptides exported from E. coli includes the following steps, which occur in what order for correct export?

1.  A chaperone, SecA, binds to the polypeptide.

2.  A chaperone, SecB, binds to the polypeptide.

3.  ATP is hydrolyzed by Sec A.

4.  SecA pushes 20 amino acids of the polypeptide into the translocation complex.
TLS Online TPP Program

#Question id: 19705

#13. Methods in Biology

Which of the following normally has a slowly depolarizing “prepotential”?