Sorry but the only thing i know is the first one which is cell membrane
Answer:
preventing viruses from replicating
Explanation:
Answer:
Adrian's adaptive immune system remembered the antigens from the virus. so he becomes immune to it.
Explanation:
What do you mean by responsible? Do you want to know the genetics behind it, what the surface markers do, or why they are metically important? I think I can help.
Answer:
Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth. It is an attraction that exists between all objects, everywhere in the universe.
or just mass.
The Law of Universal Gravitation states that the force of gravity acts between all objects in the universe that have mass.