Quiz 6
How is breathing related to Cellular Respiration?
In Breathing, CO2 & O2 are exchanged between your lungs and the air. In Cellular Respiration cells use the O2 obtained through the breathing to breakdown fuel, releasing CO2 as a waste product.
What are the reactants and products of Cellular Respiration?
Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.
Cellular Respiration Equation
Sugars + oxygen = CO2 + water + ATP
ATP Uses
The human body uses energy from ATP for all of its activities and body maintenance. Assures a continual supply of energy needed to run energy-consuming reactions.
ATP
a free floating molecule in cells that temporarily stores energy that can be used for cellular work in animals, plants, fungi, protists and bacteria. ATP
Calories
a way of measuring the amount of energy needed to perform work
What is the impact of heat production on cellular respiration efficiency?
cellular respiration results in heat more than half of the energy released in cellular respiration becomes heat
Why is Fermentation used in organisms?
process by which the living cell is able to obtain energy through the breakdown of glucose and other simple sugar molecules without requiring oxygen.
Fermentation
Anaerobic harvesting of energy. extraction of energy from sugars without the use of oxygen. No O2 is needed and get 2 ATPs which isn't as good as 32 but better than nothing
Cellular Respiration
Aerobic harvesting of energy. Oxygen is consumed during the breakdown of Glucose to CO2 & H2O and energy is released. Photosynthesis and cellular respiration provide energy for life
Compare fermentation efficiency to cellular respiration efficiency?
Anaerobic cell respiration (glycolysis + fermentation) produces 2 ATP/glucose consumed. Aerobic cell respiration (glycolysis + the Krebs cycle + respiratory electron transport) produces 36 ATP/glucose consumed and is roughly 18 times more efficient than fermentation. Your cells require a lot of energy and are dependent on the high efficiency of aerobic respiration. Cell respiration converts about 40% of the available energy of glucose into ATP. The remaining 60% is lost as heat and helps to generate your relatively high body temperature.
Where does Cellular Respiration takes?
Mitochondria.
