RNA and protein synthesis
- Created by: Margaret Hobart
- Created on: 15-05-21 15:35
View mindmap
- RNA and protein synthesis
- protein synthesis
- stage 1: transcription
- 1. RNA polymerase attaches to DNA double helix and breaks H bonds (unzips)
- 2. mRNA makes a copy
- 3. RNA polymerase lines up free RNA nucleotides alongside exposed bases on the template strand
- complementary base pairing
- 4. joined up by RNA polymerase forming an mRNA molecule
- 5. H bonds reform and strands coil into a double helix
- 6. stop signal stops more RNA being made
- 7. mRNA moves out of nuclear pores and attaches to the ribosome in the cytoplasm
- 6. stop signal stops more RNA being made
- 5. H bonds reform and strands coil into a double helix
- 3. RNA polymerase lines up free RNA nucleotides alongside exposed bases on the template strand
- 2. mRNA makes a copy
- in eukaryotes transcription results in the production of pre-mRNA.
- splicing removes introns and joins exons
- stage 2: translation
- 1. mRNA attaches to ribosome and tRNA carries amino acids to it
- 2. tRNA with an anticodon that's complementary to the first codon on the mRNA attaches itself by complementary base pairing
- 3. a second tRNA molecule attaches itself to the next codon
- 4. two amino acids attached to the tRNA are joined by peptide bonds
- 3. a second tRNA molecule attaches itself to the next codon
- 2. tRNA with an anticodon that's complementary to the first codon on the mRNA attaches itself by complementary base pairing
- 1. mRNA attaches to ribosome and tRNA carries amino acids to it
- 1. RNA polymerase attaches to DNA double helix and breaks H bonds (unzips)
- stage 1: transcription
- RNA molecules
- messenger RNA
- made during transcription
- carries genetic code from DNA to ribosomes where it's used to make a protein during translation
- single polynucleotide strand
- groups of three bases are called codons
- transfer RNA
- involved in translation. carries amino acids to ransoms
- single polynucletidestrand that's folded into a clover
- H bonds between specific bas pairs hold it in shape
- every sequence of 3 bases at one end is called an anticodon and an amino acid binding site at the other end
- messenger RNA
- genome
- complete set of all genes in an organism
- proteome
- compleet set of all proteins an organism can produce
- protein synthesis
Comments
No comments have yet been made