Answer:
<em>supports the plant</em>
<em>makes up the majority of a plant</em>
The correct answer is A
The scientist can determine that this nucleic acid is a DNA molecule, because it contains Thymine, which does not occure in the RNA molecule. The RNA molecule contains Adenine, Guanine and Cytosine just like the DNA, but unlike the DNA it contains Uracil, not Thymine.
Secondly, the scientist can say with certainty that this DNA molecule is surrounded by a nucleus based on the structure of the nucleic acid described. Only eukaryotic cells have ladder structure. The prokaryotic cells have circular DNA and do not have any organelles, like the nucleus. Therefore, from the ladder structure of the DNA the scientist can see that the cell has a nucleus.
<h2>Multiple sclerosis</h2>
Explanation:
- Brittany has experienced progressively increasing difficulty moving, speaking, and swallowing due to the deterioration of the myelin sheaths within her nervous system. Brittany most clearly suffers from <u>Multiple sclerosis.</u>
Multiple slerosis is a autoimmune disease in which a person's immune system responds against its own Central Nervous System (CNS). The immune response destroys the myelin sheath of the nerves.
As a result, the transmission of nerve impulse is disrupted. Damage to the nervous tissue is the cause of many neurological symptoms like speaking difficulty, loss of control on voluntary muscle etc. As a whole in multiple sclerosis the patient's brain loses control on his body.
