At cell is a type of white blood cell that has surface receptors that recognize antigens. does an individual t cell have the ability to recognize more than one type of antigen? explain your answer.

Which process of living things produces water that enters the water cycle

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer