Topic 8.2 Cellular Respiration (AHL)

How does this work?

Anaerobic Respiration Depending on the presence of oxygen, the process of respiration can continue in one of two ways – Anaerobic or Aerobic Glucose NO O2 With O2 Glycolysis Anaerobic Respiration Cytoplasm Aerobic Respiration Mitochondria Pyruvate 2 ATP Animals: Lactic Acid Plants: Ethanol and CO2 CO2 and H2O 36-38 ATP Oxygen acts as a “key” molecule during the next stage, the link reaction. Without oxygen present, we can not enter the mitochondria.

Anaerobic respiration produces ethanol and carbon dioxide in yeast (and many other organisms.) This can go on to be processed into biofuel or alcoholic beverages. Anaerobic respiration produces Lactic Acid in humans, rather than ethanol. The production of lactic acid can build up in the blood of people as they work, leading to acidification of the blood and cramping.

This respirometer measures the amount of oxygen consumed by the seeds. Respirometers provide a way to measure the amount of cellular respiration occurring in a scenario. This respirometer measures the amount of oxygen consumed by the seeds. Use of oxygen and production of CO2 leads to no change in volume, but the CO2 is absorbed by the alkali, so the volume of gas in the respirometer decreases. The liquid plug prevents CO2 from moving between chambers, and pressure changes will lead to movement of the oil towards the chamber that has less pressure. Seeds performing respiration Potassium Hydroxide solution absorbs carbon dioxide in the atmosphere.

Fermentation Inquiry Research one of the following types of popular foods and understand the role of fermentation in the creation of said food: Key Components: Starting Raw Material – Reactants of Respiration General Process Length of Time in Production Named Bacteria End Products of Respiration Potential Foods: Tempeh Chocolate Kimchi Kombucha Yogurt Kefir Natto Masato