Compléter Protein Synthesis (D)Version en ligne Students have to fill in the blanks about protein synthesis par Jennifer Jennings 1 transcription acid amino connected adenine helicase polymerase codon building thymine nucleus three mRNA block deoxyribonucleic Proteins ribosome translation nucleotides cytosine nucleus RNA acid DNA uracil are vital to every cell ; they help accomplish jobs to help the cell survive . All proteins are coded for by DNA , - . However , due to the fact that DNA cannot leave the safety of the , there are two major steps that must be accomplished before proteins are made . The first step in decoding genetic messages is , during which a nucleotide sequence is copied from DNA to . This process occurs in the . First , an enzyme called - will open the DNA molecule . Once open , the enzyme - will join to the DNA strand . However , is not a part of RNA , instead , binds with Uracil . The base - paring rules are the following ; adenine = , and guanine = . The next step of protein synthesis is . This occurs in the . The mRNA molecule travels to the ribosome where it is read nucleotides at a time , called a . Each codon codes for one . An amino acid is the small of proteins . The amino acids are to form a protein .
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