Question

1. On which cell type is the T-cell receptor located? Macrophage Cytotoxic T-cell Antigen presenting cell...

1. On which cell type is the T-cell receptor located?

  • Macrophage

  • Cytotoxic T-cell

  • Antigen presenting cell

  • T-cell

2. What activates a Helper T-cell?

  • Recognition of the peptide antigen that is being presented

  • Viruses

  • Recognition of the peptide antibody that is being presented

  • Cytotoxic T cells

Homework Answers

Answer #1

T lymphocytes

The T-cell receptor (TCR) is a protein complex found on the surface of T cells, or T lymphocytes, that is responsible for recognizing fragments of antigen as peptides bound to major histocompatibility complex (MHC) molecules. Option d is the answer

Question no 2

Helper T cells do not directly kill infected cells, as cytotoxic T cells do. Instead they help activate cytotoxic T cells and macrophages to attack infected cells, or they stimulate B cells to secrete antibodies. Helper T cells become activated by interacting with antigen-presenting cells

So option a is the answer

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