Rabies vaccines in dogs: a. Are always given yearly b. Can treat the disease c. Are legally required in the United States d. Are voluntary in all states

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.

Which is one example of a phenotypic change that is not genetic

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots