When a B cell encounters an antigen that is a match with its receptor, it divide
ID: 78603 • Letter: W
Question
When a B cell encounters an antigen that is a match with its receptor, it divides rapidly and produces which two cell types? antibodies and memory T cells plasma B cells and memory B cell cytotoxic T cells and helper cells cytotoxic B cells and helper B cells natural killer cells and memory B cells Virally infected cells often Present "foreign" antigenic peptides to cytotoxic T cells with the help of MHC class I proteins MHC class II proteins antibodies T cell receptors B cell receptors The fruit of an angiosperm is generally ellipsis the immature gametophyte. a structure formed from the ovary wall that protects the seed(s). protective of the flower petals. the outermost layer of the seed. The sepals of the new sporophyte.Explanation / Answer
20 - answer si option B plasma cells and Memory cells.
Plasma cell will make the antibody against the antigen and Memory cells will keep the memory of the antigen for next encounter.
21 - the correct answer is option A - MHC class I proteins.
When virus particles are inside the cells there protein is degraded by the proteasome assembly. The small peptide which is generated is processed in the endoplasmic reticulum and attached to the MHC-I molecule. This MHC-I protein present this peptide to T cell
22 - Correct answer is option B.
Fruit is the part of the ovary which is derived from the ovary tissue. Apart from protection fruit also helps in seed dispersal
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