Respiration

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Zusammenfassung der Ressource

Frage Antworten
Where does cellular respiration occur? In the cells of all living things.
What is cellular respiration? It is a series of energy releasing reactions that break down organic compounds to release chemical energy and transfers it to ATP.
Why is energy required in cells? It is used for movement, making new materials for growth and repair, maintaining internal environments within a narrow range, and detecting and responding to environmental changes.
When glucose is broken down in cells the chemical energy in the glucose is lost, how much is harvested as ATP 40%
When glucose is broken down in cells the chemical energy in the glucose is lost, how much is lost as heat energy? 60%
Comparison between Anaerobic and Aerobic Respiration
When is ATP formed? When ADP reacts with inorganic phosphorus (Pi)
Aerobic Respiration Stage 1 Glycolysis -Occurs in the cytosol of cells -Glucose break down -One glucose molecule is broken down into two pyruvate molecules
Aerobic Respiration Stage 1 Glycolysis Cont. -2 ATP is formed from the release of the energy -Hydrogen atom is removed for the glucose -2 NAD (acceptor molecules) collect the Hydrogen atoms
Inputs in Stage 1 Aerobic Glucose 2 ADP + Pi 2 NAD
Outputs in Stage 1 Aerobic 2 ATP 2 NADH 2 Pyruvate
Aerobic Respiration Stage 2 Krebs Cycle -Occurs in the cell organelles known as mitochondria -2 pyruvate (3 Carbon compound) enters the mitochondria
Word Equation Chemical Equation
Aerobic Respiration Stage 2 Krebs Cycle Cont. -6CO2 (baby 2) formed, and 10 loaded acceptor molecules (8 NADH and 2FADH2 (baby 2)) - 2 ATP is formed -Energy released from this process is used to make ATP and loaded acceptor molecules.
Inputs Stage 2 Aerobic 2 Pyruvate
Outputs Stage 2 Aerobic 6CO2 8NADH 2FADH2 2ATP
Aerobic Respiration Stage 3 Electron Transport -Oxygen essential -Reactions of the loaded acceptor molecules -Occurs in the cristae where cytochromes are found. -Electrons are transferred along cytochromes until accepted by oxygen
Aerobic Respiration Stage 3 Electron Transport Cont. Electrons from NADH and FADH2 combine with oxygen to make the oxygen negative. This allows them to react with the hydrogen to form water. 32 ATP is formed
Inputs Stage 3 Aerobic 8 NADH 2FADH2
Outputs Stage 3 Aerobic Water Heat Energy 32 ATP
Anaerobic Respiration Stage 1 Glycolysis Humans -Pyruvate produced -Enzyme in muscle tissue converts pyruvate to lactate molecules -loaded acceptor molecules (NADH) drives the conversion of pyruvate to lactate -2 ATP produced
Inputs Glycolysis in Humans (Anaerobic) Glucose
Outputs Glycolysis in Humans (Anaerobic) Lactic Acid (muscle tissues) Heat Energy Water
Inputs Glycolysis in Bread and Beer (Anaerobic) Glucose 2ADP + Pi 2NADH 2 Pyruvate 2 Lactate
Outputs Glycolysis in Bread/Beer (Anaerobic) 2 Ethanol 2CO2 2 Pyruvate 2ATP 2NAD Water
Anaerobic Respiration Stage 1 Glycolysis Bread and Beer -Fermentation -Pyruvate is broken down into carbon dioxide and ethanol -Energy is ATP -2 ATP is produced
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