Download Section 13.1

Section 13.1
RNA and Transcription
I. Structure of RNA
1.
RNA: (Ribonucleic Acid) will carry
genetic info from DNA in nucleus to the
cytosol
a)
2.
Helps __________________________
3 components:
I. Structure of RNA
3.
Nitrogen base Thymine is replaced with
a new base- Uracil ( U )
a) Uracil :
b) Guanine : Cytosine
RNA
A) Types of RNA
1.
3 types of RNA
a)
Messenger RNA (mRNA):
b) Transfer RNA (tRNA):
c)
Ribosomal RNA (rRNA):
II. Transcription
1.
Transcription: process where genetic
info is copied from DNA into RNA
a)
“__________________”
A. Steps of Transcription
RNA polymerase binds to a ________
to break 2 strands of DNA apart
1.
a)
RNA polymerase: enzyme that
b)
Promoter: location where
A. Steps of Transcription
2.
3.
4.
RNA polymerase will bind to 1st
nucleotide of DNA
Complementary RNA nitrogen bases
will attach to one DNA strand
Transcription will stop when:
A. Steps of Transcription
5.
RNA polymerase will separate from
DNA and RNA
B. Products of Transcription
1.
End products
a) mRNA, ______, rRNA
2.
Only mRNA will move the message
from the nucleus to the ___________