Transcription and Translation

Front

What is the start codon in mRNA?

Back

The start codon is the first codon of a messenger RNA (mRNA) transcript that is translated by a ribosome. It is typically AUG, which codes for the amino acid Methionine.

Front

What enzyme is responsible for unzipping the DNA during replication?

Back

Helicase is the enzyme that unwinds and separates the two strands of DNA by breaking the hydrogen bonds between the base pairs.

Front

If a DNA molecule has 29% Guanine, what percentage of Cytosine does it have?

Back

29%. According to Chargaff's rules, the amount of Guanine equals the amount of Cytosine in a DNA molecule.

Front

What is the structure of a DNA molecule?

Back

A DNA molecule is structured as a double helix, consisting of two strands that wind around each other.

Front

Which nitrogen base pairs with Adenine (A) in mRNA?

Back

Uracil (U) pairs with Adenine (A) in mRNA.

Front

What is transcription in the context of genetics?

Back

Transcription is the process of copying a segment of DNA into RNA, specifically messenger RNA (mRNA), which carries the genetic information to the ribosome.

Front

What is translation in the context of protein synthesis?

Back

Translation is the process by which ribosomes synthesize proteins using the information carried by mRNA.

Front

What is the role of tRNA in protein synthesis?

Back

Transfer RNA (tRNA) transports amino acids to the ribosome during translation, matching its anticodon with the corresponding codon on the mRNA.

Front

What is the function of ribosomes in cells?

Back

Ribosomes are the cellular machinery that facilitate the translation of mRNA into proteins.

Front

What are the three main types of RNA involved in protein synthesis?

Back

The three main types of RNA are messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA).