dna transcription Flashcards Preview

bisc 110 > dna transcription > Flashcards

Flashcards in dna transcription Deck (15)
Loading flashcards...
1
Q

ssRNA

A

RNA is single stranded

2
Q

differences between RNA and DNa

A

RNA is more than info storage

there are many types of rna

rna is single stranded

3
Q

transcription

A

dna is used as a template to make a complementary RNA

4
Q

RNA polymerase

A

adds nt to the 3’ end

adds nt 5’ to 3’

5
Q

v similar to replication what are differences

A

fewer players

RNA transcript does not stay hydrogen bonded to template DNa

transcribe single genes

6
Q

how is transcription initiated

A

by signals within the dna.. Promoter and Terminator sequences

7
Q

what type of RNa goes on to be translated into protein

A

mRNA/ messenger RNA

8
Q

mRNA

A

messenger rna is the rna that goes on to be protein

9
Q

poly-A tail

A

helps stabilize RNA molecule

important in transporting mRNA across the nuclear envelope

10
Q

intron

A

a segment of a DNA or RNA molecule which does not code for proteins and interrupts the sequence of genes.

11
Q

exon

A

any part of a gene that will encode a part of the final mature RNA produced by that gene after introns have been removed by RNA splicing

12
Q

RNA splicing

A

removes introns, keeps and connects exons

performed by spliceosome

13
Q

Spliceosome

A

The spliceosome removes introns from a transcribed pre-mRNA, a type of primary transcript

is made up of snRNA and proteins

14
Q

where does central dogma take place in prokaryotes

A

Crytosol: replication, stranscription, translation

15
Q

where does central dogma take place in eukaryotes

A

nucleus: replication, transcription
cytosol: translation

mRNA is transported across the nuclear envelope