Which of the following elements is NOT correctly matched with its cellular function? a. Phosphorus b. Magnesium and potassium c.nitrogen d.phosphorus e.sulfur
The correct answer and explanation is:
The correct answer is b. Magnesium and potassium.
Explanation:
- Phosphorus (a) is correctly matched with its function in the cell. It is an essential component of nucleic acids (DNA and RNA) and plays a critical role in energy transfer through molecules like ATP (adenosine triphosphate). Phosphorus is also a key element in the formation of phospholipids, which make up the cell membrane.
- Magnesium and potassium (b) are not correctly matched as one. Magnesium is a key cofactor for many enzymes, especially in the process of DNA replication and protein synthesis. Potassium, on the other hand, is critical for maintaining proper cell function, particularly in nerve impulse transmission and maintaining cellular fluid balance. However, these two elements are not typically associated with a shared cellular function but rather function individually in different cellular processes.
- Nitrogen (c) is correctly matched. Nitrogen is a vital element in the structure of amino acids, which are the building blocks of proteins. It is also a major component of nucleic acids, such as DNA and RNA. Nitrogen is involved in the synthesis of amino groups in cellular metabolism.
- Phosphorus (d) has already been explained in the first point, where it is crucial for energy storage and transfer within cells.
- Sulfur (e) is correctly matched as well. It is an essential element in the structure of certain amino acids (like cysteine and methionine), which are crucial for protein structure and function. Sulfur also plays a role in the formation of vitamins, such as biotin and thiamine.
In conclusion, magnesium and potassium are both important for cellular functions but are not typically grouped together for a specific function in the same way as the other elements listed.