Unit 5: Protein Synthesis - Transcription/ Translation and Mutations

Front

What is the process of transcription in protein synthesis?

Back

Transcription is the process by which the genetic information in DNA is copied into messenger RNA (mRNA). This occurs in the nucleus of the cell.

Front

What is the role of mRNA in protein synthesis?

Back

mRNA carries the genetic message from DNA in the nucleus to the ribosomes, where proteins are synthesized.

Front

What is a codon?

Back

A codon is a sequence of three nucleotides in mRNA that corresponds to a specific amino acid or stop signal during protein synthesis.

Front

What is an anti-codon?

Back

An anti-codon is a sequence of three nucleotides in transfer RNA (tRNA) that is complementary to a codon in mRNA.

Front

What is the function of ribosomes in translation?

Back

Ribosomes are the sites where amino acid chains are assembled from the information in mRNA during the process of translation.

Front

What are the main steps of translation?

Back

The main steps of translation include initiation, elongation, and termination, where the ribosome assembles amino acids into a polypeptide chain based on the mRNA sequence.

Front

What is the significance of the start codon?

Back

The start codon (AUG) signals the beginning of translation and codes for the amino acid methionine.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in the amino acid sequence of a protein, potentially affecting its function.

Front

How can mutations affect protein synthesis?

Back

Mutations can lead to the production of nonfunctional proteins, altered proteins, or no protein at all, depending on the nature of the mutation.

Front

What is the difference between a silent mutation and a missense mutation?

Back

A silent mutation does not change the amino acid sequence of a protein, while a missense mutation results in a different amino acid being incorporated into the protein.