RNA Transcription And Processing Flashcards Preview

Biochemestry Genetics > RNA Transcription And Processing > Flashcards

Flashcards in RNA Transcription And Processing Deck (15):
1

In what direction is RNA synthesized and Read?

Synthesis : 5’ ———-> 3’
Read: 3——————> 5’

2

How mans DNA strands are required for RNA synthesis?

1 DNA strand

3

These are the start and stop signals for DNA transcription?

1. Promoters
2. Terminators

4

This is the most abundant RNA molecule and when it binds to protein it creates this important organelle ?

1. rRNA!!!

rRNA + Proteins= ribosome

5

tRNA’s main duty?

1. Transfer amino acids to the ribosome

6

What is the heterogeneous nuclear RNA (hnRNA)?

1. Pre-mRNA
(Posttranscriptional RNA)
2. Found in nucleus

7

What is microRNA for?

1. Splices mRNA introns !

8

This drugs inhibits the only prokaryotic RNA polymerase?

1. Rifampin
2. Actinomycin D (also eukaryotes)

9

RNA polymerase 1 (RNAP1) in eukaryotes synthesizes the following?

1. rRNA (nucleolus)

EXCEPT 5S RNA!!

10

RNAP2 synthesizes the following ?

1. hnRNA
2. mRNA
3. Some microRNA

11

RNAP3 synthesizes the following?

1. tRNA
2. 5S rRNA

12

RNAP2 is inhibited by this toxin?

1. alpha-amanitin (dead cap mushroom)

13

This drug inhibits RNA polymerases in both eukaryotes and prokaryotes?

1. Actinomycin D

14

These 2 DNA/RNA strands are identical to each other, with the exception of Thymine to Uracil?

1. DNA Coding Strand (antitemplate)
2. mRNA

15

These 2 DNA/RNA strands are anti parallel and complementary to each other ?

1. DNA template strand
2. mRNA