Cells: Metabolism and Protein Synthesis. Mitochondria: Cell Power Energy => Work O2 required to completely capture food energy into ATP Small amounts.

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Presentation transcript:

Cells: Metabolism and Protein Synthesis

Mitochondria: Cell Power Energy => Work O2 required to completely capture food energy into ATP Small amounts of ATP formed in cytoplasm, but mostly in mitochondria

Cytoplasm vs. Mitochondria Anaerobic Glycolysis 2 ATP / Glucose Lactic Acid Aerobic Oxidative Phos ATP / Glucose CO2 & H2O

O 2, CO 2, and H 2 O revisited O2 “receives” H+ --> H2O CO2 and H2O is produced O2 is consumed THAT’S LIFE

Protein Synthesis: The Root of Regulation Enzymes Regulate Bio - Chemistry Enzymes are Proteins Protein Synthesis is Directed by DNA

Cast of Characters Nucleus: DNA & RNA transcription Ribosomes: mRNA & tRNA & Translation

Supporting Cast Rough Endoplasmic Reticulum: Where proteins associated with membranes are made Golgi Apparatus: Where proteins are modified and packaged

RER and Golgi:

Proteins Synthesis: The Map Transcription: mRNA “copy” of DNA “code” in the nucleus Translation: assemble protein outside the nucleus

Cracking the Code Proteins are chains of amino acids in specific sequences DNA is arranged in 3-base pair “codons” Each codon “spells” either a specific amino acid, START or STOP.

Protein “Assembly” Ribosomes arrange mRNA tRNA carries specific amino acids match mRNA codons = amino acids

READ Pages 58-60: Answer: Content Review: # 20 Develop Your Reasoning Sills: #3-5