EOC Review #4: Protein Synthesis and Mutations

Front

What is the process of translation in protein synthesis?

Back

Translation is the process by which ribosomes synthesize proteins using mRNA as a template, translating the sequence of nucleotides into a sequence of amino acids.

Front

What is the role of RNA in protein synthesis?

Back

RNA, specifically messenger RNA (mRNA), carries the genetic information from DNA to the ribosome, where it is translated into a protein.

Front

What is a mutation in the context of DNA?

Back

A mutation is a change in the nucleotide sequence of DNA, which can lead to changes in the structure and function of proteins.

Front

What are the types of mutations that can occur in DNA?

Back

The main types of mutations are substitution, insertion, and deletion.

Front

What is an insertion mutation?

Back

An insertion mutation occurs when one or more nucleotide bases are added to the DNA sequence, potentially altering the reading frame.

Front

How does a chemical that prevents RNA formation affect protein synthesis?

Back

If RNA formation is prevented, protein synthesis cannot occur because mRNA is not produced to carry the genetic code to the ribosome.

Front

What percentage of adenine in DNA corresponds to uracil in mRNA?

Back

If 30% of a DNA strand is adenine, then 30% of the corresponding mRNA will be uracil, as uracil pairs with adenine during transcription.

Front

What is the significance of the start codon AUG in mRNA?

Back

AUG is the start codon that signals the beginning of translation and codes for the amino acid methionine.

Front

What is the 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.

Front

What is the role of ribosomes in protein synthesis?

Back

Ribosomes are the cellular machinery that facilitate the translation of mRNA into a polypeptide chain, linking amino acids together.