module 7 lec 5

Question 1

What directs amino acid incorporation during translation?

Answer 1

Base pairing between an mRNA codon and a tRNA anticodon directs amino acid incorporation.

Question 2

What is the role of mRNA in translation?

Answer 2

mRNA carries the genetic message from DNA to the ribosome for translation into protein.

Question 3

What is the role of tRNA in translation?

Answer 3

tRNA mediates the translation of mRNA codons into amino acids by matching codons with the correct amino acid.

Question 4

What is the function of ribosomes in translation?

Answer 4

Ribosomes are the “factories” where translation occurs, facilitating the assembly of amino acids into a polypeptide chain.

Question 5

How does translation begin?

Answer 5

Translation begins when the ribosome binds to the mRNA and matches tRNA anticodons with mRNA codons to build the polypeptide.

Question 6

When does translation begin?

Answer 6

Translation begins when the ribosome binds to mRNA and matches tRNA anticodons with mRNA codons.

Question 7

What is the role of the ribosome in translation?

Answer 7

The ribosome reads mRNA and matches tRNA anticodons to codons to build the polypeptide

Question 8

What happens after the ribosome matches tRNA anticodons with mRNA codons?

Answer 8

The ribosome incorporates the corresponding amino acids into the growing polypeptide chain.

Question 9

How are tRNA anticodons involved in translation?

Answer 9

tRNA anticodons bind to complementary mRNA codons to add the correct amino acid to the polypeptide.

Question 10

What is the outcome of translation?

Answer 10

Translation produces a polypeptide chain that folds into a functional protein.

Question 11

What determines where amino acid incorporation occurs during translation?

Answer 11

Base pairing between the mRNA codon and the tRNA anticodon determines where amino acid incorporation occurs.

Question 12

What is the role of tRNA in translation?

Answer 12

tRNA matches its anticodon to the mRNA codon to bring the correct amino acid to the ribosome.

Question 13

How does tRNA pair with mRNA?

Answer 13

tRNA has an anticodon that is complementary to the mRNA codon, enabling it to align with the correct codon during translation.

Question 14

What happens after the tRNA anticodon pairs with the mRNA codon?

Answer 14

The corresponding amino acid is added to the growing polypeptide chain.

Question 15

What is wobble in tRNAs?

Answer 15

Wobble refers to the ability of some tRNAs to recognize more than one mRNA codon for the same amino acid.

Question 16

How does wobble affect tRNA and codon-anticodon pairing?

Answer 16

Wobble allows the third base of the codon to pair loosely with the anticodon, enabling flexibility in pairing.

Question 17

Why is wobble important in translation?

Answer 17

Wobble increases the efficiency of translation by allowing tRNAs to pair with multiple codons for the same amino acid.

Question 18

Does wobble occur at all positions in the codon-anticodon pairing?

Answer 18

No, wobble primarily occurs at the third position of the mRNA codon and the first position of the tRNA anticodon.

Question 19

Can a single tRNA recognize multiple codons?

Answer 19

Yes, due to wobble, a single tRNA can recognize and bind to more than one codon that codes for the same amino acid.