Explanation:
im pretty sure its They ward off disease-causing organisms by competing for space and nutrients on and inside the body. ... Scientists and doctors can even utilize prokaryotes to help the human body. The two key components of ecosystem stability are resilience and resistanc
Answer: okay what's your problem
Answer:
Chronic hepatitis B and hepatitis D
If a scientist observes an enzyme polypeptide chain arranged in spiral turns that rise upward and are held in place by hydrogen bonds he/she is looking at a tertiary structural arrangement.
Answer:
They are stimulated by an antigen.
Explanation:
Natural killer cells are cytotoxic cells that help our body in innate immune response. These are an critical and important component of the innate immune system of our body. These natural killer cells provide a rapid response towards the virus infected cells. These cells have capability to detect MHC that are present on the infected cells. Natural killer cells do not require activation for killing those cells which are missing MHC I. Due to this feature, they are named as the Natural killer cells. These cells can directly induce the death of tumor cells and play an important role in immunosurveillance.
