BIOL 1011 Lab 7
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19 Terms
Cellular Respiration
The process of converting the chemical energy of organic molecules into a form immediately usable by organisms. The primary aim of Cellular Respiration is to make ATP and NADH within the organism.
Aerobic Respiration
O2 is consumed while CO2 is released. Oxygen is the terminal electron receptor.
Anaerobic Respiration
Little to no O2 is present to be used by the organism, so other things must be used for energy. An inorganic molecule other than oxygen is the terminal electron acceptor. This may be carbonate, nitrate, or sulfate for example.
Fermentation
The process of adding carbohydrates (sugars) to the yeast in order to produce ethanol and CO2. An organic molecule is the terminal electron acceptor.
Energy molecule of the cell
ATP
How many molecules of ATP are produced from one molecule of glucose in aerobic respiration?
36-38 ATP
How many molecules of ATP are generated from one molecule of glucose in fermentation?
2 ATP
What type of organism performs aerobic respiration?
Eukaryotes
What type of organism performs anaerobic respiration?
Some bacteria, archaea, and yeast
What type of organisms perform fermentation?
Bacteria, yeasts, and human muscle cells
What is the order/process of aerobic/anaerobic respiration?
Glycolysis, Pyruvate Oxidation, Krebs Cycle, Electron Transport, Chemiosmosis ATP!
What is the job of NADH?
It feeds into the electron transport chain.
Pyruvate
Used in fermentation. Does something depending on the enzyme.
What did we measure?
CO2 levels
How to calculate slope?
Change in CO2 ppm/ change in time
What is the equation for aerobic respiration?
C6H12O6 + 602 → 6CO2 + 6H2O
glucose + oxygen → carbon dioxide + water
What does glycolysis make?
Pyruvate
Why would temperature affect the rate of fermentation?
A slight change in temperature would affect the rate of fermentation depending on the enzyme.
What were the different types of sugars tested?
Sucrose (table sugar), fructose (fruit sugar), lactose (milk sugar), maltose (disaccharide amylase makes from cutting down starch), dextrose (glucose)