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Page 1: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside
Page 2: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Cellular Respiration Cellular Respiration: metabolic

reactions that convert stored chemical energy into usable chemical energy (ATP).

Where? inside cells of organisms

Two Major Types Aerobic Respiration- oxygen (electron

acceptor) is required to generate ATP Anaerobic Respiration- talk about this later.

Page 3: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Food is ingested

Food is modified- broken down

Fermentation• Lactate• Ethanol + CO2

i. Kreb’s Cycleii. Electron Transport

Chain

Is Oxygen Present to accept electrons?

YES! NO!Aerobic Respiration

Anaerobic Respiration

Cellular

Respiration

Page 4: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Food is ingested

Food is modified- broken down into

monomers

Fermentation• Lactate• Ethanol + CO2

i. Kreb’s Cycleii. Electron Transport

Chain

Is Oxygen Present to accept electrons?

YES! NO!Aerobic Respiration

Anaerobic Respiration

Cellular

Respiration

Page 5: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Stage 1 of Cellular Respiration

Most Common Example: Glycolysis

Glycolysis: breaking down of glucose

Glucose pyruvate + ATP

Pyruvate = 3 Carbon sugar

Page 6: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

O2

Page 7: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Steps of Glycolysis 1. Phosphates from two ATP molecules are

transferred to a single glucose molecule to make a 6- C- PP compound (takes three reactions)

2. The 6-C-PP compound is broken down into two 3- C- P compounds (takes two reactions)

3. Another phosphate is is added to the two 3- C- P compounds to make two 3- C- PP compounds

4. Each 3- C- PP compound is converted into pyruvate, producing four 3-C pyruvates (takes four reactions)

Page 8: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside
Page 9: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Food is ingested

Food is modified- broken down

Fermentation• Lactate• Ethanol + CO2

i. Kreb’s Cycleii. Electron Transport

Chain

Is Oxygen Present to accept electrons?

YES! NO!Aerobic Respiration

Anaerobic Respiration

Cellular

Respiration

Page 10: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Inner Compartme

nt Electron Transport Chain

Inside of Cell

Page 11: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside
Page 12: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Aerobic Respiration Summary

Goal: To make lots of ATP = usable chemical energy for the cell

Krebs Cycle

Uses pyruvate to free electrons

Electron Carriers: NADH, FADH2

Electron Transport Chain

Electrons used to create a H+ gradient to leave via ATP synthase to make ATP.

Page 13: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Pre- Krebs Cycle Pyruvate enters a mitochondrion and is

converted into a 2-C compound

By product is a 2-C acetyl molecule (different 2-C compound)

Acetyl binds to a molecule called coenzyme A (CoA) to make acetyl-CoA.

Page 14: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Krebs Cycle1. Acetyl-CoA binds to a 4-C compound, to make a

6-C compound and releases coenzyme A

2. CO2 is released from 6-C compound, to make a 5-C compound. Electrons are transferred to NAD+, to make NADH

3. CO2 is released from the 5-C compound, to make a 4-C compound. ATP is made and NADH are made

4. 4-C compound is converted into a different 4-C compound. Electrons are transferred to FAD, to make FADH2

5. New 4-C compound is converted to original 4-C compound to continue cycle. NADH is made.

Page 15: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Electron Transport Chain1. Electrons from electron carriers NADH and

FADH2 pass through the ETC located in the inner mitochondria membrane

2. Energy from the electrons is used to pump H+ ions outside the inner mitochondria compartment

3. Since there is a higher concentration of H+ ions outside, they are transported back inside through carrier protein ATP Synthase

4. ATP Synthase uses the H+ ion gradient to combine ADP & P to make ATP

5. The used electrons and H+ ions bind with oxygen to form water.

Page 16: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside
Page 17: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

Aerobic Respiration Movie

Topic- Glycolysis, Krebs Cycle, ETC

Tools- camera, large dry erase board and dry erase markers.

Rubric- max 5 pts each

Accuracy

Easy to See/ Hear

Intriguing/ Creative

Vincent and Gavin

Gaby and Kira

Luke and Alivia

Claire and Grant

Alvaro and Thomas

Andrew and Maddie

Shruti and Dominic

Page 18: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside
Page 19: Cellular Respiration  Cellular Respiration : metabolic reactions that convert stored chemical energy into usable chemical energy (ATP).  Where? inside

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