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  • What does phosphorylation do to a molecule? - Socratic
    Phosphorylation is the addition of a phosphoryl group (PO_3^(2-)) to a molecule Enzymes are needed for this to happen This happens in proteins, some lipids, and su
  • What are mitochondria? + Example - Socratic
    Mitochondria are site of oxidative phosphorylation, i e production of ATPs utilizing energy liberated in exothermic chemical reactions Mitochondria are cell organelle concerned with cellular respiration Cellular respiration occurs in 2 steps; for example, Glycolysis and Kreb's Cycle or Citric Acid Cycle Glycolysis occurs in cytoplasm, where as Kreb's cycle occurs in mitochondria The
  • Why do many signal transduction pathways involve the protein kinase . . .
    Protein kinase is like a switch It can "turn on" (or off) a protein They do this by changing the molecular configuration of the protein when the phosphate group is added to specific phosphorylation sites This can expose (or close) sites that are active for specific reaction making the protein active (active-site cleft) It is possible to change conformation of protein by adding phosphoryl


















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