Nucleic acids are molecules that are essential to, and characteristic of, life on Earth. There are two basic types of nucleic acid, DNA (oligonucleotide acid) and RNA (nucleic acid). This exercise will focus on DNA, although ways in which it differs from RNA will also be presented. DNA is found in all organisms from the smallest bacteria to humans. DNA has the same composition and structure in all organisms!DNA has two important functions.1 - it is the genetic material that is passed from one generation to the next.2 - it is the coded information that tells cells how to make proteins.
Answer: C. Ii & III are correct
II. reduced intracellular ATP.
III. apoptosis or necrosis.
Explanation:
Cytochrome c oxidase controls the last step of food oxidation. Cytochrome c oxidase is an enzyme responsible for electron transfer in the electron transport chain (ETC), it inhibit in slowing down or stopping the ETC.
Consequently, ATP production would be gradually reduced, as the ETC is responsible for the majority of ATP production. This shows option II is correct.
The question starts by stating that cyanide is highly toxic, so this match up with the fact that a large dose would also cause cell death (apoptosis or necrosis). Therefore, option III is also accurate.
Option I: Inhibiting the ETC is consequential as it reduces oxygen demand because electrons would not flow to oxygen, the final electron acceptor.
The given statement is true.
Fibrocartilage comprises an amalgamation of cartilaginous tissue and white fibrous tissue in various extents. It exhibits toughness and flexibility due to the presence of the former constituent, and the property of elasticity due to the latter. It is only cartilage, which comprises both the type I and II collagen.
Fibrocartilage is found on the pubic symphysis, and on the soft tissue to bone attachments. Fibrocartilage is a dense, tough, and fibrous component, which assists in filling the torn part of the cartilage.
