True or false: Plant cells need centrioles in mitosis.

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.

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the:

Omg substrates with the same size and shape as the active site will bind to the enzyme. why is the key labeled the “bad” substrate?