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Title: AQA AS BIOLOGY STRUCTURE OF RNA
Description: Detailed first year (AS) biology notes to aid key revision of topics and enhance knowledge.
Description: Detailed first year (AS) biology notes to aid key revision of topics and enhance knowledge.
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Transferring the coded information:
mRNA:
The sequence of nucleotide bases in DNA determines the sequence
mRNA is a long strand arranged in a single helix
...
In eukaryotic cells DNA
The base sequence of mRNA is determined by
is largely confined to the nucleus
...
transcription
...
There a number of different types, cytoplasm where it associates with the ribothe one that transfers the DNA code from the nucleus to the cytosomes
...
This is small enough to
There it acts as a template for protein synthesis
...
This deterof amino acids in the proteins which are synthesised there
...
a single amino acid
...
RNA Structure:
RNA is a polymer made up of repeating mononucleotide sub
-units
...
the pentose sugar ribose
2
...
A phosphate group
tRNA:
A single-stranded chain folded into a clover leaf
shape, with one end of the chain extending beyond the other
...
There are
many types of tRNA which binds to a specific
amino acid
...
Each tRNA is specific to one amino acid and has
an anticodon that is specific to that amino acid
Title: AQA AS BIOLOGY STRUCTURE OF RNA
Description: Detailed first year (AS) biology notes to aid key revision of topics and enhance knowledge.
Description: Detailed first year (AS) biology notes to aid key revision of topics and enhance knowledge.