Select the correct statement about the immune system. a. All antigen receptors produced by a single B cell or T cell are identical and bind to the same epitope. b. Antibodies are secreted by T cells. c. Adaptive immunity is characteristic of invertebrates and vertebrates.

for the points

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

cell/ tissue/ organ/ organ system/ body

registered nurse (rn): the rn is responsible for carrying out both the medical plan of care prescribed by the physician as well as the nursing care plan developed by the nursing staff. the rn assesses each resident and modifies the nursing care as needed to meet the patient's needs.