transcription

Question 1

Ribosomal RNA (rRNA)

Answer 1

80%. Form the core of ribosome and catalyze protein synthesis

Question 2

Transfer RNA (tRNA)

Answer 2

15%. Form adaptors that select and hold amino acids during protein synthesis

Question 3

Messenger RNA (mRNA)

Answer 3

1-5%. Short lived, directly involved in protein synthesis. Coding RNAs.

Question 4

Small nuclear RNA (snRNA)

Answer 4

direct the splicing of pre-mRNA to form mRNA (remove introns)

Question 5

Small interfering RNA (siRNA)

Answer 5

regulate eukaryotic gene expression by degrading select mRNA

Question 6

Micro RNA (miRNA)

Answer 6

regulate gene expression by blocking translation of selective mRNA

Question 7

RNA polymerase 1

Answer 7

rRNA

Question 8

RNA polymerase 2

Answer 8

mRNA

Question 9

RNA polymerase 3

Answer 9

tRNA

Question 10

Aberrant methylation. Fragile X Mental Retardation (FMR1)

Answer 10

FMR1 gene encodes for a protein of neurological function. expansion of CGG repeat makes it susceptible to methylation of cytosine. Turns of transcription and gene becomes silent