Gene Expression

What is the sugar found in RNA?

• Ribose

• Glucose

• Deoxyribose

• Fructose

Which base is replaced by uracil in RNA

• Adenine

• Thymine

• Cytosine

• Guanine

Which enzyme is responsible for synthesizing RNA during transcription

• DNA polymerase

• Helicase

• RNA Polymerase

• Ligase

Tags

NGSS.HS-LS1-1

What is the purpose of the cap and tail added to mRNA after transcription?

• To help mRNA leave the nucleus and protect it from degrading

• To prevent translation

• To enable DNA replication

• To bind to RNA polymerase

What happens during the elongation phase of translation?

• mRNA is produced

• Amino acids are joined together to form a polypeptide

• The ribosome reaches a stop codon

• Introns are removed

How is tRNA involved in translation?

• It carries the genetic code to the ribosome

• It catalyzes peptide bond formation

• It delivers the correct amino acids to the ribosome based on the mRNA codon

• It assists in splicing exons and sewing the introns back together

What is the consequence of a nonsense mutation?

• No change in the polypeptide

• Change in one amino acid

• Premature termination of the polypeptide chain

• Addition of a new amino acid

Tags

NGSS.HS-LS3-2

what is the function of rRNA during translation

• To deliver amino acids to the ribosome

• To catalyze the formation of peptide bonds between amino acids

• To transport mRNA out of the nucleus

• To bind tRNA to mRNA

What does mRNA stand for?

• Mobile RNA

• Messenger RNA

• Mitochondrial RNA

• Matrix RNA

Which of the following is NOT a type of mutation?

• Substitution

• Deletion

• Frameshift

• Recombination

Tags

NGSS.HS-LS3-2