Experiment 1.Obtain a tube of water and a straw. 2.Exhale deeply through the straw into the water. 3.Make observations. 4.Why might your observations be different than the people near you? pH Indicator Bromothymol Blue acidic basic pH scale pH = -log [H+] a [H+]= [H+]= Example pH = -log [H+] What would be the pH of 0.01M solution of HCl (like your stomach acid)? pH = -log [H+] pH = - -2 pH = 2 Buffers Cellular Respiration (Glucose )C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O Inside the cell Figure 3.2 Secretion being released from cell by exocytosis Peroxisome Ribosomes Rough endoplasmic reticulum Nucleus Nuclear envelope Chromatin Golgi apparatus Nucleolus Smooth endoplasmic reticulum Cytosol Lysosome Mitochondrion Centrioles Centrosome matrix Microtubule Microvilli Microfilament Intermediate filaments Plasma membrane Location for Cellular Respiration What happens to CO 2 in blood? CO 2 + H 2 O HCO H + What happens to CO 2 in water? CO 2 + H 2 O HCO H + Carbonic Anhydrase Gas Exchange