Is plant response to contact with a solid object.

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

Which law represents a balanced chemical equation?

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.