Bacteria and viruses : pathogens :: a.
cytotoxic T cells and macrophages : pathogens

b.
cytotoxic T cells and B cells : white blood cells

c.
B cells and T cells : mucous membrane cells

d.
helper T cells and cytotoxic T cells : skin cells

Explain why the plants cortex would serve as the best food source for animals

In the water cycle , when does water undergo a chemical change

Which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements.which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements.the framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center.because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane.the diverse proteins found in and attached to membranes perform many important functions.the kinky tails of some proteins keep the membrane fluid by preventing the component molecules from packing solidly together.membranes include a mosaic, or mix, of carbohydrates embedded in a phospholipid bilayer.