6mRNARepresents the sequence of codons (mRNA language) from the DNA strand.Brings the sequence to the ribosomes (site of protein synthesis) in the cytoplasm.Provides the sequence for the synthesis of specific protein from the amino acids (found in cytoplasm).mRNA = messenger RNA
7rRNArRNA = ribosomal RNAFunction:forms a complex with various proteins and make a structure called ribosome, and this complex reads the coded sequence in mRNA to link amino acids together into particular proteins.
8tRNA brings the amino acids to the ribosomes Transfer RNAtRNA brings the amino acids to the ribosomes
17Why Three Bases per Codon? A one base code: 41 = 4 combinationsA two base code: 42 = 16 combinationsA three base code: 43 = 64 combinationsThere are twenty amino acids, so a three-base code is the minimum required.
18tRNAFunction: Transports amino acids floating in the cytoplasm to ribosomes for protein synthesisOne end of the strand has guanine, while the other end carries the CCA combination of nitrogen bases. A triplet of nitrogen bases called anticodon is present on one of the loops. The anticodon pairs with the complementary codon on the mRNA molecule.tRNA strand is folded upon itself forming hydrogen bonded loops. It results in either a clover leaf pattern or hair pin patterntRNA = transfer RNAHydrogen bonds
19Making a proteinmRNA from nucleus travels through the cytoplasm to the ribosomeOn the mRNA, a start codon: AUG signals the beginning of a proteintRNA delivers specific amino acids and creates a polypeptide chainA release factor endsthe process