35. Why is DNA important for metabolic activities of the cell?
Answer: D
DNA controls the synthesis of enzymes, making it vital for metabolic activities of the cell.
DNA plays a crucial role in regulating the synthesis of enzymes, which are essential for various metabolic processes within the cell. By encoding the instructions for enzyme production, DNA directly influences metabolic pathways and cellular function.
A) It initiates cellular mitosis.
While DNA is indeed necessary for cellular mitosis, this process is not directly related to the metabolic activities of the cell. Mitosis primarily concerns cell division and replication rather than the biochemical processes that occur within the cell.
B) It provides cell wall stability.
DNA does not contribute to the structural integrity of the cell wall. Instead, cell wall stability is typically provided by polysaccharides and proteins. Therefore, this option is incorrect in the context of DNA's role in metabolism.
C) It increases glucose absorption.
DNA itself does not directly increase glucose absorption. Glucose absorption is primarily managed by transport proteins and cellular mechanisms that do not involve the genetic material. Thus, this option does not accurately reflect the importance of DNA in metabolic activities.
D) It controls the synthesis of enzymes.
This option is correct as DNA contains the genetic instructions necessary for the synthesis of enzymes. Enzymes are critical for facilitating metabolic reactions, thus making DNA fundamental to the metabolic activities within cells.
Conclusion
The correct answer is D because DNA is essential for controlling enzyme synthesis, which directly impacts cellular metabolism. Options A, B, and C do not accurately represent the metabolic role of DNA, as they focus on different cellular functions unrelated to metabolic processes. Understanding this connection underscores DNA's critical role in maintaining cellular metabolism.