Codons and Anticodons in Translation

The video tutorial explains the concepts of codons and anticodons in gene expression, focusing on their roles in mRNA and tRNA. Codons are three-base sequences on mRNA that code for specific amino acids, while anticodons are complementary sequences on tRNA that ensure the correct amino acid is added during protein synthesis. The tutorial covers the interaction between codons and anticodons during translation, the process of amino acid activation, and the significance of stop codons in terminating protein synthesis.

What is the primary role of a codon in gene expression?

• To bind with ribosomes

• To terminate RNA transcription

• To code for a specific amino acid

• To initiate DNA replication

Which of the following is a characteristic of a codon?

• It is a single nucleotide

• It is a three-base sequence

• It is found on tRNA

• It is a protein

What is the function of an anticodon?

• To carry amino acids to the ribosome

• To initiate DNA synthesis

• To code for proteins

• To terminate protein synthesis

Where is the anticodon located?

• On ribosomes

• On tRNA

• On DNA

• On mRNA

What is the significance of the anticodon loop in tRNA?

• It initiates protein synthesis

• It matches with the mRNA codon

• It carries the amino acid

• It binds to DNA

How do codons and anticodons interact during translation?

• They initiate transcription

• They match complementary sequences

• They form a double helix

• They bind to DNA

What is the role of tRNA in protein synthesis?

• To carry amino acids to the ribosome

• To synthesize DNA

• To terminate translation

• To code for mRNA

What happens when a stop codon is encountered during translation?

• DNA replication begins

• Protein synthesis continues

• A new amino acid is added

• Translation is terminated

Why do stop codons terminate protein synthesis?

• They bind to ribosomes

• They lack a corresponding tRNA

• They initiate transcription

• They have a complementary anticodon

Which of the following is NOT a stop codon?

• UGA

• AUG

• UAG

• UAA