The subunits of Nucleic Acids are called Nucleotides.
Answer:
The correct answer is option a. "Transcription would not occur at high levels in either the presence or absence of arabinose".
Explanation:
The ara operon, also known as the L-arabinose operon, is a series of related genes that are transcribed within the same transcript and are all related to the metabolism of L-arabinose. Among the proteins translated from the ara operon, the AraC protein that binds to RNA Polymerase is the one that recognizes L-arabinose and enhances ara operon transcription in its presence. Therefore, if a mutation removes the gene that encodes for the AraC protein, transcription would not occur at high levels in either the presence or absence of arabinose.
The correct answer is A. Thyroid
Explanation:
In biology, a gland refers to a type of structure composed by cells whose main function is to synthesize substances especially hormones. This includes the thymus gland that is composed of two lobes and is located near the heart; the anterior/posterior pituitary gland that is located at the base of the brain and it is one of the smallest glands; the pancreas that is located in the abdomen and the thyroid that as the thymos is composed of two lobes, secrets different hormones and it is located in the neck/throat. Considering this, the gland described is the Thyroid because this is the only one located in the throat and also this is composed of two loves.
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.