Central Dogma of Biology

Front

What is the Central Dogma of Biology?

Back

The Central Dogma of Biology describes the flow of genetic information from DNA to RNA to protein, outlining the processes of transcription and translation.

Front

What is transcription in the context of the Central Dogma?

Back

Transcription is the process by which the information in a segment of DNA is copied into messenger RNA (mRNA).

Front

What is translation in the context of the Central Dogma?

Back

Translation is the process by which the sequence of nucleotides in mRNA is read by ribosomes to synthesize a corresponding polypeptide (protein).

Front

What role do ribosomes play in translation?

Back

Ribosomes are the cellular machinery that facilitate the translation of mRNA into proteins by reading the mRNA sequence and assembling the corresponding amino acids.

Front

What is an amino acid?

Back

An amino acid is a building block of proteins, consisting of a central carbon atom, an amino group, a carboxyl group, and a variable side chain (R group).

Front

How many standard amino acids are there?

Back

There are 20 standard amino acids that are used to build proteins in living organisms.

Front

What is a codon?

Back

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

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 stop codon?

Back

A stop codon is a codon that signals the termination of translation, indicating that the protein synthesis is complete.

Front

What is the relationship between DNA, RNA, and proteins?

Back

DNA contains the genetic blueprint, RNA serves as the intermediary that carries the information from DNA to the ribosomes, and proteins are the functional products synthesized based on that information.