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Questions and Answers
What is the term used to describe the adaptive immune system's capability to distinguish millions of different antigens?
What is the term used to describe the adaptive immune system's capability to distinguish millions of different antigens?
- Variability
- Adaptability
- Sensitivity
- Specificity (correct)
How many B and T lymphocytes are there in an adult?
How many B and T lymphocytes are there in an adult?
- 10^6 to 10^9
- 10^3 to 10^5
- 0.5 to 1 × 10^12 (correct)
- 10^9 to 10^12
What is the total collection of lymphocyte specificities sometimes called?
What is the total collection of lymphocyte specificities sometimes called?
- Immune diversity
- Antigen reservoir
- Lymphocyte repertoire (correct)
- Pathogen spectrum
What is the term for a group of cells derived from one lymphocyte that express identical antigen receptors?
What is the term for a group of cells derived from one lymphocyte that express identical antigen receptors?
What is the functional significance of specificity in adaptive immune responses?
What is the functional significance of specificity in adaptive immune responses?
What is the clonal selection hypothesis?
What is the clonal selection hypothesis?
What enables the immune system to respond to a large variety of antigens?
What enables the immune system to respond to a large variety of antigens?
What leads to enhanced responses upon repeated exposures to the same antigens?
What leads to enhanced responses upon repeated exposures to the same antigens?
What prevents injury to the host during responses to foreign antigens?
What prevents injury to the host during responses to foreign antigens?
What is the marked proliferative expansion of the clone of lymphocytes specific for any antigen upon exposure called?
What is the marked proliferative expansion of the clone of lymphocytes specific for any antigen upon exposure called?
Before exposure to any one antigen, how many cells are specific for that antigen?
Before exposure to any one antigen, how many cells are specific for that antigen?
What ranges from approximately 1000 to 10,000 cells?
What ranges from approximately 1000 to 10,000 cells?
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