Answer:
In autoimmune diseases, such as lupus, multiple sclerosis and rheumatoid arthritis, people produce antibodies that stick to their body's own proteins and attack healthy cells.
Explanation:
Answer: An exoskeleton is the external skeleton that supports and protects an animal's body, in contrast to the internal skeleton of, for example, a human. i think its B
Explanation: hope this helps!
Answer:
A synapse.
Explanation:
This is where signals are transmitted through the brain, but cannot connect two neurons. The space is called a synapse.
I think the answer is recognition proteins!
