James was observing cells under a microscope. he observed some cells which had a layer outside the plasma membrane. what is this layer called?

What kind of action is a cause of air pollution

How does a lytic infection differ from a lysogenic infection?

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half