DNA, RNA, and Protein Synthesis Quick Review

Front

What is the function of tRNA in protein synthesis?

Back

tRNA (transfer RNA) carries amino acids to the ribosome, where they are added to the growing polypeptide chain according to the sequence of codons in mRNA.

Front

What is the role of mRNA in protein synthesis?

Back

mRNA (messenger RNA) is transcribed from DNA and carries the genetic information from the nucleus to the ribosome, where it serves as a template for protein synthesis.

Front

Define mutation in the context of genetics.

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

Front

What is an anticodon?

Back

An anticodon is a sequence of three nucleotides in tRNA that pairs with a complementary codon in mRNA during protein synthesis.

Front

What is the first step of protein synthesis?

Back

The first step of protein synthesis is transcription, where mRNA is synthesized from a DNA template in the nucleus.

Tags

NGSS.HS-LS1-1

Front

What is the complementary RNA sequence for the DNA sequence -ACGAT-?

Back

The complementary RNA sequence is -UGCUA-.

Front

What are codons?

Back

Codons are sequences of three nucleotides in mRNA that correspond to specific amino acids or stop signals during protein synthesis.

Tags

NGSS.HS-LS1-6

Front

Explain the process of translation in protein synthesis.

Back

Translation is the process where the ribosome reads the sequence of codons in mRNA and assembles the corresponding amino acids into a polypeptide chain.

Front

What is the significance of the start codon AUG?

Back

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

Front

What happens during the elongation phase of translation?

Back

During elongation, the ribosome moves along the mRNA, and tRNA molecules bring amino acids to the ribosome, forming peptide bonds between them.