protein synthesis

What is the first step in protein synthesis?

• Transcription
• Translocation
• Translation
• Replication

Which enzyme is responsible for synthesizing mRNA during transcription?

• RNA polymerase
• DNA polymerase
• DNA ligase
• Ribosome

Where does mRNA migrate after being synthesized?

• To the ribosome
• To the lysosome
• To the nucleus
• To the mitochondria

Which nucleotide in RNA replaces thymine found in DNA?

• Uracil
• Guanine
• Adenine
• Cytosine

What are ribosomes made of?

• Proteins and RNA
• Only proteins
• DNA and lipids
• Only RNA

What initiates the binding of ribosomes to mRNA during translation?

• Start codon
• Stop codon
• Promoter
• Anticodon

What is a codon?

• A sequence of three nucleotides
• A type of RNA
• A single nucleotide
• An amino acid

How do tRNA molecules bind to the mRNA?

• By forming complementary base pairings
• By magnetic attraction
• Through hydrogen bonding
• By ionic bonds

What dictates the order of amino acids in a protein?

• mRNA sequences
• tRNA sequences
• Ribosome structure
• DNA sequences

What happens at the end of the translation process?

• A release factor binds to the stop codon
• The ribosome breaks apart
• The mRNA is destroyed
• The protein is instantly folded