When you move your fingers to type a text message, you are using motor neurons of the • somatic nervous system • sensory nervous system • autonomic nervous system** • central nervous system

What type of cell is produced after fertilization occurs and the gametes combines ?

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water