Download Structure-and-Functions-of

(3) GENE EXPRESSION
(A) What is
Gene
Expression?
(B) Structure
and Functions
of RNA
Gene
Expression
(C)
Transcription
(E) Splicing
and posttranslational
modification
(D)
Translation
GENE EXPRESSION (B)
Describe
the structure of a
RNA nucleotide
State 3 differences between
DNA and RNA
State 3 types of RNA and the
main function of each type
STRUCTURE OF RNA NUCLEOTIDES
 Each



RNA nucleotides contains:
A phosphate molecule
A ribose sugar
A base
RNA BASES
 Cytosine
 Guanine
 Adenine
 Uracil
----------- Guanine
----------- cytosine
----------- uracil
----------- adenine
No more Thymine!
DNA VS. RNA
DNA
Number of
strands present
in one molecule
Complementary
base partner of
Adenine
Sugar present
in the
nucleotide
RNA
3 TYPES OF RNA MOLECULES
 Messenger
RNA (mRNA) carries a copy
of the DNA code from the nucleus to
the ribosome.
 Ribosomal
RNA (rRNA) and proteins
form the ribosome.
 Each
transfer RNA (tRNA) carries a
specific amino acid to a ribosome
GENE EXPRESSION (B)
Describe
the structure of a
RNA nucleotide
State 3 differences between
DNA and RNA
State 3 types of RNA and the
main function of each type