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Immunology Final- Weigel PCB 3233 | Complete Questions & Correct Detailed Answers (100% Correct) 2025 | 2026.

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Immunology Final- Weigel PCB 3233 | Complete Questions & Correct Detailed Answers (100% Correct) 2025 | 2026. Quiz_________________? 1-turn/2-turn joining rule (12/23 rule) - Answer signal sequences having 1- turn spacer can only join with sequences having 2-turn spacers -ensures that gene segments are joined in the correct order Quiz_________________? Activation- induced cytidine deaminase (AID) - Answer involved in somatic hypermutation, an enzyme that converts cytosine to uracil which are then replaced with non-template nucleotides Quiz_________________? Acute asthma is a type I response but can lead to chronic asthma and what type is chronic and what cell mediates? - Answer Acute response in allergic asthma leads to Th2-mediated chronic inflammation of airways Crosslinking of specific IgE on mast cells by inhaled allergen triggers mast cell secretion of inflammatory mediators Result: Bronchial smooth muscle contraction w/increased mucus secretion - airway obstruction - chronic asthma (Type IV) Quiz_________________? acute phase proteins - Answer produced in response to inflammatory cytokines; produced by hepatocytes in liver Quiz_________________? affinity - Answer the tightness of binding of an antibody binding site to an antigen - antibodies produced by a memory response have a higher affinity than those in a primary response Quiz_________________? affinity maturation - Answer as immune response proceeds, antibodies of higher affinity will be produced Quiz_________________? allelic exclusion - Answer only one heavy chain and one light chain are produced in each B-cell -rearranged H or L chain is expressed from only one chromosome Quiz_________________? Allergic Asthma - Answer Type I Quiz_________________? Allergic Conjunctivitis - Answer Type 1 Quiz_________________? Allergic Rhinitis - Answer Type I Quiz_________________? Allergy - Answer Common environmental antigens that cause hypersensitivity reactions; nickel, plants, perfumes are most common Quiz_________________? alpha beta T cell surrogate chain - Answer pt-alpha (pre-t-cell receptor) which signals the cell to halt rearrangement of beta, gamma and delta genes and begin to proliferate Quiz_________________? an individual's population of T cells - Answer many millions of different TCR, each defines a clone of T cells with a single AG- binding specificity Quiz_________________? anergic T cells - Answer don't make IL-2 no proliferation or differentiation, can never be stimulated to proliferate or differentiate

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Complete Questions & Correct




Quiz_________________?

1-turn/2-turn joining rule (12/23 rule) -

Answer✅

signal sequences having 1- turn spacer can only join with sequences having 2-turn spacers

-ensures that gene segments are joined in the correct order




Quiz_________________?

Activation- induced cytidine deaminase (AID) -

Answer✅

involved in somatic hypermutation, an enzyme that converts cytosine to uracil which are
then replaced with non-template nucleotides




Quiz_________________?

Acute asthma is a type I response but can lead to chronic asthma and what type is chronic
and what cell mediates? -

Answer✅

Acute response in allergic asthma leads to Th2-mediated chronic inflammation of airways




1

, Crosslinking of specific IgE on mast cells by inhaled allergen triggers mast cell secretion of
inflammatory mediators

Result: Bronchial smooth muscle contraction w/increased mucus secretion -> airway
obstruction -> chronic asthma (Type IV)




Quiz_________________?

acute phase proteins -

Answer✅

produced in response to inflammatory cytokines; produced by hepatocytes in liver




Quiz_________________?

affinity -

Answer✅

the tightness of binding of an antibody binding site to an antigen

- antibodies produced by a memory response have a higher affinity than those in a primary
response




Quiz_________________?

affinity maturation -

Answer✅

as immune response proceeds, antibodies of higher affinity will be produced




Quiz_________________?

allelic exclusion -

Answer✅



2

, only one heavy chain and one light chain are produced in each B-cell

-rearranged H or L chain is expressed from only one chromosome




Quiz_________________?

Allergic Asthma -

Answer✅

Type I




Quiz_________________?

Allergic Conjunctivitis -

Answer✅

Type 1




Quiz_________________?

Allergic Rhinitis -

Answer✅

Type I




Quiz_________________?

Allergy -

Answer✅

Common environmental antigens that cause hypersensitivity reactions; nickel, plants,
perfumes are most common




3

, Quiz_________________?

alpha beta T cell surrogate chain -

Answer✅

pt-alpha (pre-t-cell receptor) which signals the cell to halt rearrangement of beta, gamma
and delta genes and begin to proliferate




Quiz_________________?

an individual's population of T cells -

Answer✅

many millions of different TCR, each defines a clone of T cells with a single AG- binding
specificity




Quiz_________________?

anergic T cells -

Answer✅

don't make IL-2 > no proliferation or differentiation, can never be stimulated to proliferate
or differentiate




Quiz_________________?

Angioedema -

Answer✅

Type I




Quiz_________________?

antibodies (Abs) -



4

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