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QUESTION 11 A cell has CD3 & CD4 markers, and MHC Class I (but not II) molecules on its surface. What cell type is it? ? B cell ? cytotoxic T cell ? helper T cell ? macrophage QUESTION 12 What is true about clonal selection? ? All immune cells mature through clonal selection ? Lymphocytes express only a few of the 500 genes to make their antigen-specific receptor ? Some lymphocytes are eliminated because they interact with non-self antigen QUESTION 13 Somatic cells present antigens on ? endogenous, MHC I ? endogenous, MHC II ? exogenous, MHC I ? exogenous, MHC II

          QUESTION 11
A cell has CD3 & CD4 markers, and MHC Class I (but not II) molecules on its surface. What cell type is it?
? B cell
? cytotoxic T cell
? helper T cell
? macrophage
QUESTION 12
What is true about clonal selection?
? All immune cells mature through clonal selection
? Lymphocytes express only a few of the 500 genes to make their antigen-specific receptor
? Some lymphocytes are eliminated because they interact with non-self antigen
QUESTION 13
Somatic cells present ______ antigens on ______
? endogenous, MHC I
? endogenous, MHC II
? exogenous, MHC I
? exogenous, MHC II

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QUESTION 11
A cell has CD3 CD4 markers, and MHC Class I (but not II) molecules on its surface. What cell type is it?
? B cell
? cytotoxic T cell
? helper T cell
? macrophage
QUESTION 12
What is true about clonal selection?
? All immune cells mature through clonal selection
? Lymphocytes express only a few of the 500 genes to make their antigen-specific receptor
? Some lymphocytes are eliminated because they interact with non-self antigen
QUESTION 13
Somatic cells present antigens on
? endogenous, MHC I
? endogenous, MHC II
? exogenous, MHC I
? exogenous, MHC II

Added by John S.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

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Solved by Expert Dominador Tan

Step 1

CD3 and CD4 are markers commonly found on T cells. MHC Class I molecules are found on all nucleated cells and present endogenous antigens to cytotoxic T cells. MHC Class II molecules are found on antigen-presenting cells (such as macrophages, dendritic cells, Show more…

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QUESTION 11 A cell has CD3 & CD4 markers, and MHC Class I but not II molecules on its surface. What cell type is it? a) B cell b) Cytotoxic T cell c) Helper T cell d) Macrophage QUESTION 12 What is true about clonal selection? a) All immune cells mature through clonal selection b) Lymphocytes express only a few of the 500 genes to make their antigen-specific receptor c) Some lymphocytes are eliminated because they interact with non-self antigen QUESTION 13 Somatic cells present a) Endogenous, MHC b) Endogenous, MHCII c) Exogenous, MHC d) Exogenous, MHCII antigens on

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