1. How many binding sites are on a typical IgA antibody? A.) 4 B.) 3 C.) 2 D.) 1
ID: 144956 • Letter: 1
Question
1. How many binding sites are on a typical IgA antibody?
A.) 4
B.) 3
C.) 2
D.) 1
2.What is an effect of the T-cell receptor (TCR)?
A.) Stimulate differentiation of MHC proteins
B.) Cause histamine release from mast cells
C.) Stimulate B-cell production of antibodies
D.) Cause serotonin release from platelets
3. Which of the following is produced by somatic recombination?
A.)MHC protein
B.)T-cell receptor (TCR)
C.) HLA protein
D.) CD4
4.) What is most important to foreign antigen presentation?
A.)Thymus gland
B.) Lymph node
C.) Bone marrow
D.) Capillaries 5
5.) .A child's infection with respiratory syncytial virus (RSV) is different from a subsequent re-infection later in life. Why?
A.)The child initially has low IgM and low IgG but later has moderate IgM and moderate IgG.
B.) The child initially has high IgM and moderate IgG but later has moderate IgM and high IgG.
C.) The child initially has moderate IgM and high IgG but later has high IgM and moderate IgG.
D.)The child initially has moderate IgM and low IgG but later has moderate IgM and high IgG.
Explanation / Answer
Answer No. 4 T cells are present in the Thymus gland and are the most important factor in detecting signals of Infection or any kind of abnormal cell growth. Antigen-presenting cells present the antigens to T cells in order to mediate cellular immune responses.
Answer No. 2 TCR Stimulates differentiation in MHC proteins
Answer No. 1 There are 4 binding sites in IgA antibody
Answer No. 3 T cell receptors are produced due to somatic recombination
Answer No. 5 The child initially has a moderate IgM and low IgG but later has moderate IgM and High IgG.
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