Question

1)

What role do piRNAs play?

A) Serve as a template for transposon silencing.

B) Serve as a guide to mRNA degradation enzymes.

C) Structural component of some ribozymes.

D) Antisense RNA involved in RNA processing

E) Silences the second X chromosome in human females.

2) Which RNA is incorrectly paired with its function?

A) snRNA - RNA processing

B) circRNA - transcriptional regulation

C) piRNA - RNA processing

D) Xist - chromosomal structure

E) IncRNA - transcriptional regulation

Answer 1

1 Serve as a template for transposon silencing- pi RNA is a small intearcting RNA involved in silencing of genes especially acts as antisense to transposons .

so other options are not applicable.

2 piRNA - RNA processing

snRNA - RNA processing- small nuclear RNA are involved in splicing process, remove introns and joins the exons of RNA in different formats for differenent protein expression. so it matches with the function.

B) circRNA - transcriptional regulation - circular RNAs acts as gene regulators involved in regulating transcription.

C) piRNA - RNA processing it is not involved in RNA processing instead it is involved in silencing of transposons. so it is the one does not matches with the function.

D) Xist - chromosomal structure - X inactive specific transcript is an RNA gene is a non coding RNA located in X chromosome involved in X inactivation process.so it matches with the function.

E) IncRNA - transcriptional regulation- long non coding RNA important for regulating gene expression. so it matches with the function.