<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.
Answer:
D. Nucleic acids attach to the bases in the DNA.
Explanation:
Transcription begins when an enzyme called RNA polymerase is added to the DNA template and begins a new chain a new chain to produce complementary RNA.
During the RNA synthesis transcription takes place, then the cap and tail is added and then splicing occurs.
RNA polymerase moves from the 3' end to the template strand creating the RNA-DNA double helix or similar the base sequences. This makes a chain with each sugar by the set of bonds called phosphodiaster linkage. Then, the enzyme unwind the DNA and begins the synthesis of RNA.
Therefore, D. Nucleic acids attach to the bases in the DNA.
Answer:
A. A biofilm
Explanation:
Biofilms have high bacterial density near to 10000000 CFU/ml bacteria. Due to such high densities, these biofilms becomes resistant to the antibiotics. These biofilms are basically community of microorganisms which stick itself to some kind of surface be it living or non-living. The bacteria’s which get attached to these biofilm and grow in an environment in which they possess both tolerance and resistance towards any bactericidal agent. Due to this functional mechanism of bacterias with in the biofilm, they become resistant to antibiotics.
B. Is the correct answer.
Answer:
Inorganic portion of matrix:
The inorganic component of extracellular matrix consists of inorganic salts namely calcium and potassium. This salts are present in the crystal of hydroxyapatite. This component provide rigidity and makes the bone as the strongest component of the body.
Organic portion of matrix:
The organic portion of the bone is known as osteoids. They consists of glycosaminolycans, glycoproteins and proteoglycans. The collagen fibers of bones resist torsion of the bones.
The cellular mechanism of the breakdown of the matrix is known as osteoregenreation. The bone cell involved in this process is known as osteoclast that are involved in the process of bone resorption. The bone organic and inorganic component are broken down and reconstruct the extracellular bone matrix.