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Multiple Choice
Which of the following is a primary function of RNA in cells?
A
Carrying genetic information from DNA to ribosomes for protein synthesis
B
Transporting oxygen throughout the body
C
Storing genetic information for long-term inheritance
D
Catalyzing the breakdown of glucose during glycolysis
Verified step by step guidance
1
Understand the role of RNA in cells: RNA (ribonucleic acid) is a nucleic acid that plays a crucial role in the flow of genetic information from DNA to proteins, a process known as the central dogma of molecular biology.
Eliminate incorrect options: RNA does not transport oxygen (this is the role of hemoglobin in red blood cells) and does not store genetic information for long-term inheritance (this is the role of DNA).
Focus on the correct function: RNA is involved in protein synthesis. Specifically, messenger RNA (mRNA) carries genetic information transcribed from DNA to ribosomes, where proteins are synthesized.
Consider the role of other types of RNA: Transfer RNA (tRNA) helps bring amino acids to the ribosome, and ribosomal RNA (rRNA) is a structural and functional component of ribosomes, but these are not directly related to the question's focus on carrying genetic information.
Conclude that the primary function of RNA in this context is to carry genetic information from DNA to ribosomes for protein synthesis, which aligns with the central dogma of molecular biology.