Slides in this set
The structure of ribonucleic acid
Describe the structure of ribonucleic acid (RNA)
Describe the structure and role of messenger
Describe the structure and role of transfer RNA
RNA = ribonucleic acid
RNA is a single -stranded polymer
Each RNA nucleotide consists of:
A pentose sugar (ribose)
A phosphate group
A base adenine, cytosine, guanine,
uracil (instead of thymine)
RNA used in protein synthesis is
messenger RNA (mRNA) or transfer
RNA (tRNA).…read more
Messenger RNA (mRNA)
mRNA is used to transfer the DNA code from the
nucleus to the cytoplasm.
mRNA is complementary to the DNA code.
mRNA is small enough to leave the nuclear pores.
Once in the cytoplasm, mRNA associates with the
mRNA is used to determine the sequence of amino
acids during protein synthesis.
mRNA is easily broken down and only exists whilst it
is needed to manufacture a protein.
The sequence of nucleotides in the mRNA is
referred to as the genetic code.…read more