Modern genetics Flashcards
How many types of RNA is there
3
mRNA
Carries genetic information from DNA in the nucleus to direct the process of protein synthesis in the cytoplasm
mRNA is the starting point to
mRNA is the starting point to make proteins
What are the 3 types of RNA
rRNA mRNA and tRNA
rRNA is the
ribosomal
rRNA
is just a structure of the ribosomes
tRNA
Transports amino acids to the ribosomes
where does tTRNA hand around
the tRNA just hangs around the ribosomes
How do you use a DNA molecule to make a protein?
Transcription🡪Translation🡪Protein Synthesis
All mRNA strands are made up of
codons
combination of 3 nucleotides
codons
mRNA Transcription occurs in the
nucleus
Translation is also called
protein synthesis
protein synthesis involves
the mRNA and the tRNA
The ribosome has
2 parts
The bottom half is the small subunit, top half is the large subunit
In the large subunit of the ribosome there are 3 sites:
A site, P site and the E site
what is on the bottom end of the ribosome Trna molecule
anticodon (the triplet codon)
what is on the top of the ribosome trna molecule
an amino acid
AUG is the
start codon
.The amino acids are attached by a strong bond known as a
peptide bond
polypeptide just means
a whole bunch of amino acids together
how is an mRNA strand made?
the RNA polymerase attaches to the end of the DNA template strand and base pairs with the DNA to make an mRNA strand
In the RNA base pairing rule under Trna T goes to A and A goes to
T
In the RNA base pairing rule under Mrna T goes to A and A goes to
U
