PLEASE HELP ME Which of the following are single displacement reactions??

Which type of neuroglia is found outside of the brain?

Cells destroy body cells infected by a virus or bacteria.

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.