Understanding Non-Coding RNAs

What is the primary characteristic of non-coding RNAs?

• They encode proteins.

• They are only found in humans.

• They do not encode proteins.

• They are not transcribed.

What was the initial belief about the non-coding regions of the genome?

• They were thought to be junk DNA.

• They were considered essential.

• They were known to encode proteins.

• They were believed to be non-existent.

What role does tRNA play in the cell?

• It encodes proteins.

• It brings amino acids to the ribosome.

• It modifies DNA.

• It silences genes.

Which non-coding RNA is a component of ribosomes?

• miRNA

• snRNA

• rRNA

• tRNA

What is the function of snRNA?

• It is involved in splicing.

• It encodes proteins.

• It silences genes.

• It modifies DNA.

What is the primary function of snoRNA?

• Gene silencing

• Protein synthesis

• RNA modification

• DNA replication

What is the role of siRNA in the cell?

• It encodes proteins.

• It is a component of ribosomes.

• It is involved in gene silencing.

• It modifies DNA.

Which enzyme processes siRNA and miRNA?

• Dicer

• Helicase

• Polymerase

• Ligase

What is a key feature of long non-coding RNAs?

• They are shorter than 20 nucleotides.

• They are involved in protein synthesis.

• They are over 200 nucleotides long.

• They are not transcribed.

What is a known function of the Xist RNA?

• Protein synthesis

• X chromosome inactivation

• DNA replication

• Gene silencing