10 Questions
What is the function of the three codons that do not specify any amino acid?
To specify the end of a protein-coding sequence
What is the typical pattern of codons that specify the same amino acid?
They vary at the third position, and contain the same nucleotides at the first and second positions
What is the role of the anticodon in tRNA?
To pair with the complementary codon in an mRNA molecule
What is the function of the AUG codon?
It acts as an initiation codon, signaling the start of a protein-coding sequence
What is the length of a typical tRNA molecule?
About 80 nucleotides
What is the role of tRNA molecules in protein synthesis?
To act as an adaptor molecule, recognizing and binding both to the codon and the amino acid
What is the convention for writing codons?
The 5`-terminal nucleotide is written to the left
What is the relationship between the codons that specify the same amino acid?
They have the same nucleotides at the first and second positions, and vary at the third position
What is the function of the initiation codon?
It signals the start of a protein-coding sequence
What is the shape of a tRNA molecule?
An L-shaped molecule
Learn about the unique genetic makeup of eukaryotic cells, including nuclear DNA, mitochondrial DNA, and chloroplast DNA. Discover how these genomes originated from ancestral bacteria and how they have evolved over time.
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