Multiple Choice
Which of the following base pairs are found in RNA?
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15. Gene Expression
Introduction to Types of RNA
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which structural features are common to all tRNAs?
A
A single-stranded loop and a 5' cap
B
A double helix structure and a poly-A tail
C
A cloverleaf structure and an anticodon loop
D
A ribosomal binding site and a promoter region
Verified step by step guidance1
Understand that tRNA, or transfer RNA, is a type of RNA molecule that helps decode a messenger RNA (mRNA) sequence into a protein during translation.
Recognize that all tRNAs have a similar structure, which is crucial for their function in protein synthesis.
Identify the cloverleaf structure: tRNAs have a characteristic three-dimensional shape that resembles a cloverleaf when drawn in two dimensions. This structure is formed by the folding of the single RNA strand into four distinct regions or arms.
Focus on the anticodon loop: One of the key features of tRNA is the anticodon loop, which contains a sequence of three nucleotides complementary to the mRNA codon. This allows the tRNA to bring the correct amino acid to the ribosome during protein synthesis.
Note that tRNAs do not have a 5' cap or a poly-A tail, which are features associated with mRNA, nor do they have a ribosomal binding site or promoter region, which are involved in transcription and translation initiation.
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