aim: how do mitochondria make atp energy for cells?
Post on 17-Jan-2018
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AIM: How do mitochondria make ATP energy for cells?
DO NOW:1. Where would we find more
mitochondria: muscle cells or skin cells? Why?
2. Where can we find mitochondria?
Cellular Respiration
• Process that takes energy from sugar molecules (organic molecules) & places it into molecules of ATP
• Glucose (sugar) energy is converted into ATP energy
• ATP is the usable form of energy for all living things
• Requires oxygen aerobic respiration• Takes place in mitochondria of both animal &
plant cells
Mitochondrion
Let’s Look at the Reaction!Glucose & Oxygen Carbon Dioxide & Water & ATP
WORD EQUATION
C6H 12O6 & O2 CO2 & H2O & ATPCHEMICAL EQUATION
Question: What are the reactants / substrates in the reaction?
Question: What are the products of the reaction?
Question
• What kind of organic catalysts are involved in cellular respiration? Hint: They speed up the rate of this reaction, making it more efficient!
Answer:___________________
ATP Breakdown
• ATP energy, which has 3 phosphate groups, is released, when it is broken down into a molecule called ADP, which has 2 phosphate groups
Common Misconceptions
• Cellular respiration is breathing it’s not! It is a chemical form of respiration
• Typical respiration is a physical process & involves the exchange of gases which are needed for cellular respiration
• Inhaling & exhaling does not give you ATP energy
Humans & Anaerobic Respiration
• At times, humans may be forced to get energy by way of Anaerobic Respiration (without using oxygen) we produce LACTIC ACID, during these times, which accumulates in our muscles, & causes the “burn” & pain that you feel
• Ex. strenous exercise• Less efficient or less ATP made
Q: What will build up in this girl’s muscles?
Brain-Pop Video
• https://www.brainpop.com/science/cellularlifeandgenetics/cellularrespiration/
Homework
• Read textbook pages 220-221 & on page 221, answer questions 1, 3, and 4
• Write out questions & answers
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