Answer:
Superantigens produce intense immune responses by stimulating lymphocytes to produce cytokines.
Explanation:
Superantigens are a group of bifunctional proteins that interact with at least two receptors expressed on different cells. The superantigen´s receptors in lymphocyte T is located in the same place where the lymphocyte interacts with a conventional antigen, RCT. The capability of these superantigens to join their receptors in many T cells, shoots a series of processes that conduce to cellular activation, differentiation, proliferation, and great production and release of cytokine.
Superantigens constitute the most potent natural immunostimulators known.
Answer:
I believe they are called a population, tell me if I'm wrong.
I’m not positive but: having 2 nutrients on one side of the membrane, and 6 on the other side. 2 of the 6 cross over to make 4 and 4. It’s not using energy since it’s going with the concentration, so it’s passive transport.
Ecosystems have trouble adjusting to short-term changes - This is false.
Eco system changes can be long term and short term. Few short-term environmental changes that can change an eco system are - drought, smog, volcanic eruptions, floods etc. An ecosystem can easily adapt to short-term changes. For example, after a forest fire plants can re-grow from their roots. Many species have features to help them cope with natural, short-term environmental changes.
Answer:
when the offspring born, they have a low survival rate during first year but as they reaches maturity, their survival rate increases.
this type of survivorship is Type III
Explanation:
