Answer:
Clonal selection can be defined as methods or processes that shows(describes) tthe way lymphocytes do react or respond to the various different types of antigens present in a particular body. Clonal selection is of the notion that lymphocytes are taken during antigen presentation .
Explanation:
Clonal selection is important as it is sometimes used during negative selection during T cell maturation. it is believe to be a major cause mutations of antigen-binding affinity in memory cells during clonal expansion .
A gland that secretes externally through a duct. exocrine, exocrine gland. gland, secreter, secretor, secretory organ - any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream.
Answer: Steep, high velocity, no silting. The high water speed picks up silt from the bottom instead of letting it settle to the bottom. When the land gets level like often happens at the mouth of rivers where the water spreads out and slows down, silt settles to the bottom and you could get a wide, shallow delta.
(Put in own words this is from online hope it helps)
Answer:
False
Explanation:
The autonomic nervous system supplies the organs of the body such as intestine, kidney etc and also controls the body functions.
It comprises of the sympathetic and parasympathetic nervous system.
SOME and not all visceral organs receive dual innervation(nerve supply) from both the sympathetic and parasympathetic divisions of the autonomic system and it’s dependent on the functions of the organ.
Answer:
The correct answer is - partially negatively charged oxygen atom of the hydroxyl group.
Explanation:
In ethanol and water, there is a hydrogen bond present in which is the strongest intermolecular bond or interaction between molecules. Water molecules contain two hydrogen atoms and one oxygen atom with the same hydrogen bond.
The oxygen atom is partially negative which is attracted to the partially positive hydrogen atom. This same attraction found between the oxygen atom of the hydroxyl group of the ethanol.
Thus, the correct answer is - partially negatively charged oxygen atom of the hydroxyl group.