Answer:
The correct option is C. <u>Damage to myelination.</u>
Explanation:
Multiple sclerosis can be described as a disease in which a person's body destroys his/her own myelin sheath. Myelin sheath is a protective sheath that covers the nerves. Hence, the nerves are not able to conduct signals. As the body's own cells destroy the myelin sheath, hence multiple sclerosis is an autoimmune disease. Multiple sclerosis remains a deadly disease as the proper cure to it has not yet been found.
Answer:
The answer is C. its sequence of amino acids.
The protein's shape is influenced by its sequence of amino acids or primary structure.
Explanation:
The primary structure of a protein molecule is dependent on the amino acid chain sequence it has. The amino acid chain's <u>linear</u> structure is composed of <u>covalently bonded</u> amino acids via peptide bonds. This serves as the <u>overall backbone </u>of the protein.
<h3>Additional notes: </h3>
Secondary structure of protein
It defines the 3-dimensional shape of the<u> locally folded polypeptide</u>. They come in two forms, the alpha helices and beta sheets. During the formation of the primary structure, acidic and basic amino residues may cause kinks and turns, re-configuring the 3-D shape of the local polypeptide.
Tertiary structure of protein
This determines the overall 3-dimensional structure of the protein. The structure is due to the <u>linking of the R groups</u> of the related amino acids, <u>hydrophobic bonds</u>, and <u>disulfide bonds</u>. These bonds are <u>highly stable</u> and are not easily changed or destroyed.
Quaternary structure of protein
It is a structure that consists of multiple folded polypeptide chains or subunits. This allows the protein to have m<u>ultiple functions</u>. <u>Non-covalent forces</u> keep these structures together, making it <u>prone to rapid conformational changes.</u>
The answer is internal energy.
Answer:
Anomalous expansion
Explanation:
Anomalous expansion of water is the abnormal way water expands when exposed to low temperature.
At 4 degree Celsius , the density at the top layer is usually at the Maximum which makes the water sinks down and then the water in the lower layer rises up.
When the temperature drops below 4 degree Celsius, the water molecules at the top then freezes leaving the denser molecules at the bottom which doesn’t freeze as a result of their high density.
This way, organisms can survive in the water due to the lower layer not freezing.