Answer:
(d). B-cells.
Explanation:
Adaptive immunity can be described as immunity which develops in response to exposure to a pathogen (or foreign molecule). throughout the life. It is divided into two types, humoral immunity and cell-mediated immunity.
Humoral immunity is mediated by B cells that secrete antibodies against particular antigens. These antibodies recognize and neutralize the antigens and activate cell-mediated immunity, which is mediated by T cells.
Thus, the correct answer is option (d).
Answer:
Nutrition autotrophs ingestive heterotrophs absorptive heterotrophs mixotrophs movement flagella cilia pseudopods non-motile.
Explanation:
Hope this helped :)
Hello, to answer your question properly it is
C. <span>The waves emitted by the two sources have constant phase difference
Signed by, Virtuoso Sargedog
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No se pero quiero respuestas perdon
