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TLS Online TPP Program

#Question id: 1984

Which of the following is a pathway that would lead to the activation of cytotoxic T cells?

#Unit 4. Cell Communication and Cell Signaling

  1. B cell contact antigen → helper T cell is activated → clonal selection occurs

  2. body cell becomes infected with a virus → new viral proteins appear → class I MHC molecule-antigen complex displayed on cell surface

  3. self-tolerance of immune cells → B cells contact antigen → cytokines released

  4. complement is secreted → B cell contacts antigen → helper T cell activated → cytokines released

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TLS Online TPP Program

#Question id: 11094

#Unit 7. System Physiology – Animal

CO2 is more easily transferred into water across respiratory membranes compared to O2 because CO2
TLS Online TPP Program

#Question id: 18008

#Unit 7. System Physiology – Animal

The perception of a stressor triggers this area of the brain to initiate the stress response.
TLS Online TPP Program

#Question id: 2204

#Unit 2. Cellular Organization

A mutant channel protein is expressed in an oocyte. Compared to patch clamping experiments in oocytes expressing the normal channel, the length of downward deviations is diminished by half. This indicates:
TLS Online TPP Program

#Question id: 2543

#Unit 2. Cellular Organization

Which of the following is the most common pathway taken by a newly synthesized protein that will be secreted by a cell?
TLS Online TPP Program

#Question id: 28660

#Unit 2. Cellular Organization

cohesins associate with chromosomes by cohesin loading factors, which is?