B.) Diffusion <span>is the general process in which molecules move from an area of higher concentration to an area of lower concentration
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Are you asking for DNA or chromosomes or something? You asked for which of the following but then dont give the following
Answer:
Adaptive immune defense system consists of lymphocytes like B-lymphocytes and T- lymphocytes. B-lymphocytes provides humoral immunity while T- lymphocytes provide cell-mediated immunity to the body.
99% of lymphocytes circulate freely in the blood and lymph. B lymphocytes differentiate into plasma B cells and B memory cells when interact with antigen presented by T helper cells.
Then plasma cells secrete antibodies in the circulation which binds to extracellular antigens through antigen-binding site. Then the bounded antigen is recognized by receptors present on phagocytic cells. This receptor binds the Fc region of antigen bounded antibody and destroy the antigen by phagocytosis.
The boundary separates them<span />
A physical factor that influences an ecosystem is called an "abiotic factor."
