Answer:
Helper T cells are arguably the most important cells in adaptive immunity, as they are required for almost all adaptive immune responses. They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.
Explanation:
Helper T cells become activated when they are presented with peptide antigens by MHC class II molecules, which are expressed on the surface of antigen-presenting cells (APCs). Once activated, they divide rapidly and secrete cytokines that regulate or assist the immune response.
Answer:
<h3>It helps organisms grow in size and repair damaged tissue some species of algae are capable of growing very quickly </h3>
Explanation:
May be this can help ❣️❣️❣️❣️
Hello there!
The two holes in your nose are called "Nostrils"
Hope this helps! ;)
~Lexa
The mantle is composed of dense<span>, rocky material which ranges from being virtually solid near the </span>lower<span> boundary with the </span>core<span>, to more squidgy towards the boundary with the overlying </span>layer<span>, the crust . Mantle material is </span>less dense than<span> the </span>core<span>, but still </span>denser than the outer layers<span> of the earth.</span>
Answer:
D. Food will not be carried away from the leaves.
Explanation:
The absence of xylem and phloem the water and food transport is very difficult. If by any way the transport is done through its stem then the water and food will get mixed up which obstructs the process as transport of water is in upward direction.
