Replication, Transcription and Translation - Test Review

Front

What is transcription in the context of DNA and mRNA?

Back

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

Front

What is the complementary mRNA sequence for the DNA sequence GAT CCT?

Back

The complementary mRNA sequence is CUA GGA.

Front

What amino acid corresponds to the codon AGA?

Back

The amino acid that pairs with the codon AGA is Arg (Arginine).

Front

What is the central dogma of molecular biology?

Back

The central dogma describes the flow of genetic information from DNA to RNA (transcription) and then to protein (translation).

Front

What is the correct order of events in protein synthesis?

Back

The correct order is: 1) DNA unwinds, 2) mRNA is synthesized, 3) mRNA is processed, 4) mRNA is translated at the ribosome, 5) Protein is formed.

Front

What are the components of a nucleotide?

Back

A nucleotide is composed of a phosphate group, a sugar (deoxyribose in DNA or ribose in RNA), and a nitrogenous base.

Front

What is translation in the context of protein synthesis?

Back

Translation is the process where the mRNA sequence is read by the ribosome to synthesize a polypeptide (protein) by linking amino acids together.

Front

What is the start codon and its significance?

Back

The start codon is AUG, which signals the beginning of translation and codes for the amino acid Methionine.

Front

What is a codon?

Back

A codon is a sequence of three nucleotides in mRNA that specifies a particular amino acid.

Front

How many amino acids are coded by the mRNA sequence 5' AUG GUU AAA 3'?

Back

The mRNA sequence codes for three amino acids: Met (Methionine), Val (Valine), and Lys (Lysine).