Virtual Labs

Isolation and Microscopic Visualization of T cells and B cells

1. Which of the following is not a type of T cell ?

a: Helper T-lymphocyte Explanation

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b: Cytotoxic T-lymphocyte Explanation

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c: Regulatory T-lymphocyte Explanation

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d: Plasma T-lymphocyte Explanation

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2. What does the ‘B’ in B cell stand for?

a: Bone Marrow Explanation

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b: Bursa of Fabricius Explanation

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c: Beta Explanation

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d: Basophil Explanation

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3. Which of the following is not produced by T cells?

a: Antibodies Explanation

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b: Cytokines Explanation

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c: Perforin Explanation

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d: Granzyme Explanation

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4. The B cells express what specific cell surface markers for their function?

a: CD45+, CD3+ Explanation

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b: CD45+, CD3+, CD4+ Explanation

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c: CD45+, CD19+ Explanation

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d: CD45+, CD3+, CD8+ Explanation

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5. What is the purpose of the variable region of the B cell receptor?

a: To anchor the receptor to the surface of the cell Explanation

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b: To recognize and bind to specific antigens Explanation

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c: To facilitate signaling within the cell Explanation

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d: To protect the receptor from degradation Explanation

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6. Where do B-cells mature?

a: Thymus Explanation

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b: Bone marrow Explanation

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c: Spleen Explanation

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d: Lymph nodes Explanation

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7. What do T-cells recognize and bind to?

a: Free, unprocessed antigens Explanation

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b: Processed antigens complexed with MHC molecules Explanation

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c: B-cell receptors (BCR) Explanation

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d: Immunoglobulins Explanation

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8. What is the main function of cytotoxic T cells (CD8+ T cells)?

a: Secrete cytokines Explanation

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b: Kill infected cells through perforin and granzyme pathways Explanation

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c: Activate B-cells Explanation

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d: Differentiate into plasma cells Explanation

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9. Which type of immunoglobulin is primarily involved in the T-cell independent activation of B cells?

a: IgG Explanation

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b: IgE Explanation

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c: IgA Explanation

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d: IgM Explanation

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10. Which cells secrete cytokines that regulate B cells, macrophages, and other T cells?

a: Cytotoxic T cells Explanation

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b: Helper T cells Explanation

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c: Memory B cells Explanation

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d: Plasma cells Explanation

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