Difficulty: Hard

Average Score: 44%

Why is DNA crucial for the metabolic activities of the cell?

Rationale

It controls the synthesis of enzymes.

DNA serves as the blueprint for all cellular processes, including the synthesis of enzymes, which are critical for regulating metabolic activities. Through the process of transcription and translation, DNA encodes the information necessary for producing enzymes that catalyze biochemical reactions essential for life.

A (It initiates cellular mitosis.) YOUR ANSWER

While DNA is involved in the process of mitosis by ensuring proper replication and distribution of genetic material, its primary role is not to initiate mitosis itself. Mitosis is a complex process regulated by various proteins and signaling pathways, with DNA simply providing the genetic instructions needed for cellular division.

B (It provides cell wall stability.) YOUR ANSWER

DNA does not contribute to the physical structure of the cell wall. Instead, cell wall stability in organisms like plants and bacteria is primarily due to polysaccharides and proteins. While DNA is crucial for coding genes that may produce proteins involved in cell wall synthesis, it does not directly provide stability to the cell wall itself.

C (It increases glucose absorption.) YOUR ANSWER

DNA does not directly influence glucose absorption. Instead, glucose uptake by cells is primarily regulated by proteins such as glucose transporters, which are encoded by genes in the DNA. While DNA plays a role in the overall metabolism of glucose through these proteins, it is not responsible for the absorption process itself.

Conclusion

DNA is fundamental to cellular metabolism because it controls the synthesis of enzymes that facilitate biochemical reactions. While other choices mention important cellular functions, they do not directly correlate with DNA's primary role. The accurate understanding of DNA's involvement in metabolic activities highlights its importance in cellular function and life processes.

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