Replication, Transcription and Translation - Test Review

Front

What is the Central Dogma of Molecular Biology?

Back

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

Front

What is the process of DNA replication?

Back

DNA replication is the process by which a DNA molecule makes a copy of itself, resulting in two identical DNA strands.

Front

What is transcription in protein synthesis?

Back

Transcription is the process of synthesizing RNA from a DNA template, where the DNA sequence is converted into a complementary RNA sequence.

Front

What is translation in protein synthesis?

Back

Translation is the process where ribosomes synthesize proteins by decoding the mRNA sequence into a chain of amino acids.

Front

What is a codon?

Back

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

Front

What is the role of mRNA 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

What are the complementary base pairs in DNA?

Back

In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).

Front

What is the significance of the start codon AUG?

Back

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

Front

What is a stop codon?

Back

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

Front

How do mutations affect protein synthesis?

Back

Mutations can alter the DNA sequence, potentially leading to changes in the mRNA and resulting in different or nonfunctional proteins.