Transcription and Translation

Front

What is the role of tRNA in protein synthesis?

Back

tRNA (transfer RNA) brings amino acids to the ribosome during translation, matching them to the appropriate codons on the mRNA.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in the protein produced, potentially causing diseases.

Front

What is the DNA complement of the sequence TAATCGGCCA?

Back

The DNA complement is ATTAGCCGGT.

Front

What is the significance of start codons in protein synthesis?

Back

Start codons signal the beginning of translation; without them, protein synthesis would not occur.

Front

What enzyme unzips the DNA during replication?

Back

Helicase is the enzyme that unzips the DNA double helix to prepare for replication.

Front

What is mRNA and its role in protein synthesis?

Back

mRNA (messenger RNA) carries the genetic information from DNA to the ribosome, where it serves as a template for protein synthesis.

Front

Define transcription in the context of genetics.

Back

Transcription is the process of copying a segment of DNA into RNA, specifically mRNA, which then carries the genetic information to the ribosome.

Front

What is the function of ribosomes in protein synthesis?

Back

Ribosomes are the cellular structures where translation occurs, facilitating the assembly of amino acids into polypeptide chains.

Front

What are codons?

Back

Codons are sequences of three nucleotides in mRNA that correspond to specific amino acids or stop signals during protein synthesis.

Front

Explain the term 'genetic code'.

Back

The genetic code is the set of rules by which information encoded in mRNA is translated into proteins, consisting of codons that specify amino acids.