Which Is the First Signal in the Activation of a T

question 39

Multiple Choice

Which is the first signal in the activation of a T cell?

• A) the fusion of antigenic peptide fragments and major histocompatibility complex (MHC) proteins
• B) a T cell receptor recognizing an antigen using the CD4 protein
• C) a T cell undergoing clonal selection
• D) the exocytosis of the antigen-major histocompatibility complex (MHC) protein compound into the plasma membrane
• E) a T cell receptor recognizing a peptide fragment of a self-protein

---

Definitions:

Virginia Henderson

A nurse theorist known for defining nursing as assisting individuals to gain independence in relation to their health.

Florence Nightingale

Known as the founder of modern nursing, she was a British nurse, statistician, and social reformer who significantly contributed to the changes in the health and nursing sector during the 19th century.

Nursing Care

The provision of care to patients by nurses, involving assessment, planning, intervention, and evaluation.

Nursing Autonomy

The ability of nurses to make decisions and take actions based on their professional knowledge without external control.