Protein Synthesis

What is the first step of protein synthesis?

• Mitosis

• Transcription

• Translation

• Replication

Where does transcription occur in a eukaryotic cell?

• endoplasmic reticulum

• mitochondria

• nucleus

• cytoplasm

What is the function of mRNA in protein synthesis?

• mRNA decodes proteins directly

• mRNA carries genetic information from DNA to ribosomes for protein synthesis.

• mRNA transports proteins out of the cell

• mRNA regulates gene expression

What is the role of tRNA in protein synthesis?

• tRNA regulates gene expression during protein synthesis

• tRNA stores genetic information for protein synthesis

• tRNA acts as a catalyst in protein synthesis

• tRNA carries amino acids to the ribosome and pairs them with the mRNA codon

What is the genetic code used in protein synthesis?

• Quadruplet code

• Binary code

• Triplet code

• Doublet code

What is the final product of translation in protein synthesis?

• polypeptide chain or protein

• lipid

• amino acid

• DNA

What is the significance of the start codon in protein synthesis?

• The start codon terminates protein synthesis

• The start codon initiates protein synthesis and codes for the amino acid methionine.

• The start codon has no role in protein synthesis

• The start codon codes for the amino acid lysine

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

• sRNA

• dRNA

• mRNA, tRNA, rRNA

• pRNA

Explain the process of elongation in protein synthesis.

• The process of elongation in protein synthesis involves codon recognition, peptide bond formation, and translocation to add amino acids to the growing polypeptide chain.

• The process of elongation involves DNA replication

• Codon recognition is not part of the elongation process

• Elongation occurs after termination in protein synthesis

What is the role of ribosomes in protein synthesis?

• Ribosomes break down proteins during synthesis

• Ribosomes regulate cell division during protein synthesis

• Ribosomes play a crucial role in protein synthesis by translating mRNA into proteins.

• Ribosomes store genetic information for protein synthesis