Answer:
peptide antigens by MHC class II molecules
Explanation:
Helper T cells are activated by peptide antigens by MHC class II molecules. These antigens express on the surface of antigen-presenting cells (APCs). After activation, the T helper cells divide and secrete cytokines to assist the immune response.
Answer:
there is no question.. take off your clothes
Explanation:
<span>Biotechnology can be used to focus on a Genetically Engineered organism. it can be helpful when used for many good purposes, like increased Production of Proteins,Antibiotics and beneficial products. It can be harmful when used for Bio-Warfare, like Anthrax.</span>
Answer:
Explanation:
Consider the small sphere radius is x1.
therefore the large sphere radius is 3x1
As we know that volume of sphere=
So ,
Volume of the small sphere
=
also Volume of the large sphere
=
On solving the equation
volume of large sphere=27 * volume of small sphere
Hence