One major difference between these secondary lymphoid organs is the mechanism by which antigens or pathogens enter the organ.
Naive T cells can develop into effector and memory T cells, which remove the triggering antigen in peripheral tissues and produce protective immunity, with the help of secondary lymphoid tissues.
The spleen, which collects bloodborne antigens, the lymph nodes, which deal with antigens found in peripheral tissues, and the mucosa-associated, bronchial-associated, and gut-associated lymphoid tissues where antigens from epithelial surfaces are collected are examples of secondary lymphoid organs.
Therefore, One major difference between these secondary lymphoid organs is the mechanism by which antigens or pathogens enter the organ.
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Answer:
The correct option is: e. molecules move across the plasma membrane against their concentration gradient
Explanation:
Active transport refers to the <u>movement of the particles or molecules from higher concentration to lower concentration, across the plasma membrane of a cell.</u> This transport requires cellular energy as the movement of the molecules is <u>against the concentration gradient</u>.
Active transport can be divided into primary and secondary active transport.
A. Because elements are made up of atoms, neither electrons nor protons
Green plants get their energy from sunlight.
Answer:
drain
Explanation:
thermal is to hear as drain is to water
