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Cellular Respiration

Flash Cards for Biology

What is the formula for Cellular Respiration? C6H12O6+O6 -> 6CO2+6H2O+energy Sugar+Oxygen -> Carbon Dioxide+Water+Energy
What is a calorie? A calorie is the amount of energy needed to raise the temperature of 1 gram of water 1 Celsius degree.
How many calories make up 1 Calorie? 1000 (kilo-calorie)
Cellular Respiration begins with what pathway? Glycolysis
Does glycolysis release a lot of energy? No, only 2 ATP
What is Cellular Respiration? The process that releases energy by breaking down food molecules in the presence of oxygen.
What would be the problem if cellular respiration took place in just one step? All energy from glucose would be released at once and most would be lost in the form of light and heat.
What are the three stages of glycolysis in order? Glycolysis, The Krebs Cycle, Electron Transport Chain
Where does Glycolysis take place? In the cytoplasm of a cell
Where do the Krebs Cycle and Electron Transport Chain take place? In the mitochondria(powerhouse) of a cell
What is Glycolysis? The process in which one molecule of glucose is broken in half producing 2 molecules of pyruvic acid and 3 carbon compound.
How does the cell get glycolysis going? The cell invests 2 ATP molecules to gain 4, a net gain of 2.
If the cell uses 2 ATP molecule at the beginning of glycolysis, how does it end up with a net gain of 2 ATP molcules? The glucose invests 2 ATP in the beginning of glycolysis, at the end of glycolysis it gains 4 ATP molecules, when you take the amount invested out of the amount gained you have a total of 2.
What is NAD+? An electron carrier.
What is the function of NAD+ in glycolysis? The function of NAD+ in glycolysis is to help pass energy from glucose to other parts of the cell.
Why can glycolysis supply energy to cells when oxygen is not available? It doesn't require oxygen.
What problem does a cell have when it generates large amounts of ATP from glycolysis? In just a few seconds all of the cells available in NAD+ are filled with electrons.
What is fermentation? The process that releases energy from food molecules in the absence of oxygen, pathway does not require O2.
How does Fermentation allow glycolysis to continue? It converts NADH back into NAD+.
Is fermentation aerobic(with oxygen)or anaerobic(without oxygen)? Aerobic.
What are the two main types of fermentation? Alcoholic and Lactic Acid.
What organisms use alcoholic fermentation? Yeasts and a few other microorganisms.
What is the equation for alcoholic fermentation after glycolysis? pyruvic acid+NADH -> Lactic Acid+NAD+
What happens to the small amount of alcohol produced in the alcoholic fermentation during the baking of bread? It evaporates.
What does lactic acid fermentation convert into lactic acid? Glucose.
Created by: 2170212cl