Gr.10 Ribosomes and Protein Synthesis Quiz

What is the genetic code read in?

• One letter at a time

• Two letters at a time

• Three letters at a time

• Four letters at a time

What is the first step in decoding genetic messages?

• Translating RNA to DNA

• Forming polypeptides

• Transcribing DNA to RNA

• Reading amino acids

How many different amino acids are commonly found in polypeptides?

• 10

• 15

• 20

• 25

What does RNA contain?

• Adenine, guanine, thymine, and uracil

• Adenine, cytosine, guanine, and thymine

• Adenine, cytosine, guanine, and uracil

• Adenine, cytosine, thymine, and uracil

What is a codon?

• A single amino acid

• A three-letter word in mRNA

• A type of protein

• A nucleotide base

How many possible three-base codons are there?

• 128

• 64

• 32

• 16

What is the start codon for protein synthesis?

• UGG

• UUC

• UAA

• AUG

What do ribosomes use to assemble amino acids?

• Polypeptide chains

• Codons in mRNA

• tRNA sequence

• DNA sequence

What is the process of decoding mRNA into a protein called?

• Mutation

• Replication

• Translation

• Transcription

Where does translation begin?

• In the mitochondria

• In the ribosome

• In the cytoplasm

• In the nucleus