Multiple Choice
Which of the following is NOT one of the three main types of RNA involved in protein synthesis?
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15. Gene Expression
Introduction to Types of RNA
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Which of the following is a major difference between DNA and RNA?
A
DNA is found only in the cytoplasm, while RNA is found only in the nucleus.
B
DNA is single-stranded, while RNA is double-stranded.
C
DNA has ribose sugar, while RNA has deoxyribose sugar.
D
DNA contains thymine, while RNA contains uracil.
Verified step by step guidance1
Begin by understanding the basic structures of DNA and RNA. DNA stands for deoxyribonucleic acid, and RNA stands for ribonucleic acid. Both are nucleic acids that play crucial roles in genetics and cellular functions.
Examine the sugar component of each molecule. DNA contains deoxyribose sugar, while RNA contains ribose sugar. This difference is fundamental to their structure and function.
Consider the strand structure of each molecule. DNA is typically double-stranded, forming a double helix, whereas RNA is usually single-stranded. This structural difference affects their roles in the cell.
Identify the nitrogenous bases present in each molecule. DNA contains adenine, guanine, cytosine, and thymine. RNA contains adenine, guanine, cytosine, and uracil. The presence of thymine in DNA and uracil in RNA is a key difference.
Reflect on the location and function of each molecule within the cell. DNA is primarily located in the nucleus and serves as the genetic blueprint. RNA is found in both the nucleus and cytoplasm and is involved in protein synthesis and other cellular processes.
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