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12 Questions

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Ch1pp6-7

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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?

Variability

Adaptability

Sensitivity

Specificity (correct)

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?

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?

Clone Signup and view all the answers

What is the functional significance of specificity in adaptive immune responses?

Ensures that immune responses are precisely targeted to microbial pathogens Signup and view all the answers

What is the clonal selection hypothesis?

Predicted that clones of lymphocytes specific for different antigens develop before encountering these antigens Signup and view all the answers

What enables the immune system to respond to a large variety of antigens?

Diversity of lymphocytes Signup and view all the answers

What leads to enhanced responses upon repeated exposures to the same antigens?

Memory Signup and view all the answers

What prevents injury to the host during responses to foreign antigens?

Nonreactivity to self Signup and view all the answers

What is the marked proliferative expansion of the clone of lymphocytes specific for any antigen upon exposure called?

Clonal expansion Signup and view all the answers

Before exposure to any one antigen, how many cells are specific for that antigen?

As few as 1 in 100,000 or 1 in 1,000,000 lymphocytes Signup and view all the answers

What ranges from approximately 1000 to 10,000 cells?

The total number of lymphocytes capable of recognizing and reacting against any one antigen Signup and view all the answers

Ch1pp6-7

Choose a study mode

Podcast

Questions and Answers

What is the term used to describe the adaptive immune system's capability to distinguish millions of different antigens?

How many B and T lymphocytes are there in an adult?

What is the total collection of lymphocyte specificities sometimes called?

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 clonal selection hypothesis?

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 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?

Before exposure to any one antigen, how many cells are specific for that antigen?

What ranges from approximately 1000 to 10,000 cells?

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