Answer:
white blood cells destroy body cells infected by a virus or bacteria.
Answer:
Nothing
Explanation:
A. Control variables generally entail little or no system change. To see if the method worked, the researchers required a positive control in which the heat-killed virulent bacteria invariably transformed the non-virulent microorganisms. This positive control involves adding "nothing" to both the heat-killed virulent bacteria before mixing them with the non-virulent bacteria.
The process that uses the function of chloroplasts to initiate a reaction between carbon dioxide and water is Photosynthesis, which creates energy for the plant via the production of sugars and expels oxygen as a byproduct.
Answer:
B
Explanation:
Electrons from photosystem II go through the ECT in the chloroplast, so water is split to replace those electrons.
