Protein Synthesis. What are genes?. Gene: coded DNA instructions that control the production of protein in the cell. We can’t do anything without proteins. Instructions for telling our bodies what to do!. Genes = Instructions. What are genes?. DNA. ONLY found in the nucleus.
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We can’t do anything without proteins.
Instructions for telling our bodies what to do!
Genes = Instructions
RNA CAN move out of the nucleus to other parts of the cell
Decode DNA into RNA
3 Types of RNA involved in synthesizing proteins
1. mRNA (messenger RNA)
From nucleus to cytoplasm
2. rRNA (ribosomal RNA)
Sits in ribosome and decodes mRNA into amino acids (proteins)
3. tRNA (transfer RNA)
RNA polymerase attaches
to area of DNA molecule.
RNA poly “opens” DNA molecule.
3. RNA poly synthesizes
Base Pairing Rules
Nucleotides in DNA:
A T C G
Nucleotides in RNA:
A U C G
TRANSLATING RNA sequence into protein sequence
Occurs on the ribosome
Uses all 3 RNAs
mRNA in cytoplasm attaches to ribosome.
2. mRNA codon moves through ribosome.
3. tRNA (anticodon) brings matching AA.