PBS - 2.2.2 - A Protein Problem

Front

What is the role of mRNA in protein synthesis?

Back

mRNA (messenger RNA) is responsible for copying the genetic information from DNA and transporting it from the nucleus to the ribosome, where proteins are synthesized.

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 amino acid does the codon UGG code for?

Back

Tryptophan.

Front

What is the function of tRNA in translation?

Back

tRNA (transfer RNA) brings the appropriate amino acids to the ribosome during protein synthesis, matching its anticodon with the mRNA codon.

Front

What is the start codon and its significance?

Back

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

Front

What is the difference between transcription and translation?

Back

Transcription is the process of copying DNA into mRNA, while translation is the process of decoding mRNA to synthesize proteins.

Front

What is the site of protein synthesis in the cell?

Back

The ribosome is the site of protein synthesis, where mRNA is translated into a polypeptide chain.

Front

What is the role of ribosomes in protein synthesis?

Back

Ribosomes facilitate the binding of mRNA and tRNA, allowing for the assembly of amino acids into proteins.

Front

What is the significance of the genetic code?

Back

The genetic code is a set of rules that defines how the sequence of nucleotides in DNA and RNA is translated into the amino acid sequence of proteins.

Front

What is the function of rRNA?

Back

rRNA (ribosomal RNA) is a component of ribosomes and plays a crucial role in the synthesis of proteins by facilitating the binding of mRNA and tRNA.