Multiple Choice
Ribosomes move relative to which of the following types of RNA during protein synthesis?
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15. Gene Expression
Introduction to Types of RNA
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Which of the following best describes the primary role of RNA in cells?
A
RNA acts as a messenger carrying genetic information from DNA to the ribosome for protein synthesis.
B
RNA forms the structural framework of the cell membrane.
C
RNA stores genetic information for long-term inheritance.
D
RNA catalyzes the replication of DNA during cell division.
Verified step by step guidance1
Understand the role of RNA in cells: RNA is a nucleic acid that plays a crucial role in gene expression and protein synthesis. It acts as an intermediary between DNA and the ribosome.
Recall the central dogma of molecular biology: DNA is transcribed into RNA, and RNA is translated into proteins. RNA serves as the messenger molecule in this process.
Eliminate incorrect options: RNA does not form the structural framework of the cell membrane (this is primarily the role of lipids and proteins). RNA does not store genetic information for long-term inheritance (this is the role of DNA). RNA does not catalyze the replication of DNA during cell division (this is performed by enzymes like DNA polymerase).
Focus on the correct function: RNA carries genetic information from DNA to the ribosome, where it is used to synthesize proteins. This is the primary role of RNA in cells.
Conclude that the correct answer is: 'RNA acts as a messenger carrying genetic information from DNA to the ribosome for protein synthesis.'
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