Answer:
is a way for a cell to give information about its activities.
Explanation:
Antigen-presenting cells (APC) such as dendritic cells, macrophages, and B cells are present where antigens are most likely to penetrate the body. Ingestion of antigens by these cells is followed by digestion of antigen into peptide fragments and their association with MHC molecules.
The antigen-MHC complex is then inserted into the plasma membrane of APCs. The antigens present on the surface of APCs are recognized by the T cells to trigger the adaptive immune response. Antigen processing and antigen presentation by antigen-presenting cells are required to inform the T cells of the immune system about the presence of antigen in the body and immune responses of APCs.
Archaea and bacteria reproduce with binary fission (you could list any eukaryotic organisms)
Answer:
They are identical to their parent cell!
Explanation:
The correct answer is a semi-permeable membrane.
A semipermeable membrane refers to a layer, which only allows some of the molecules to pass through. A semipermeable membrane can be both artificial and biological. The speed of passage relies on the concentration, pressure, and temperature of the solutes or molecules on either side, as well as the permeability of the membrane to each solute.
On the basis of the solute and the membrane, permeability may depend on the size of the solute, properties, solubility, or chemistry. A semipermeable membrane illustrates a membrane, which permits some of the constituents to go through, while the selectively permeable membrane opts for the substances that pass through.
