Ch 7

Cellular Respiration

7.1

Glycolysis & Fermentation

MMMMmmm....

You eat lunch…

Digest its macromolecules...into

How do you get the ENERGY out?

Cellular Respiration

Linked to Photosynthesis--

Equation:

3 Main Processes

Glucose

Glycolysis Krebs

cycle

Electron

transport

Fermentation

(without oxygen)

Alcohol or

lactic acid

Aerobic Respiration

Anaerobic Respiration

Glycolysis

Glycolysis

Glycolysis

2. Aerobic Respiration

3. Anaerobic Respiration

Fermentation

Fermentation (Anaerobic Respiration)

Pyruvic Acid

NADH + H+ NAD+ + 2 H+ + 2 e-

Lactic Acid

Pyruvic Acid

NADH + H+ NAD+ + 2 H+ + 2 e-

Ethyl

Alcohol

(Ethanol)

Lactic Acid Fermentation

Alcoholic Fermentation

To Glycolysis

What’s the

difference?

Similarities?

Uses of Fermentation?

HW Check! p. 136 #1-3,7

Opener, Tuesday: 3/13

Summarize glycolysis.

7.2 Aerobic Respiration

2. Aerobic Respiration

Mitochondria...Draw It!

Structure of Mitochondrion

Aerobic Respiration

3 Main Steps:

NADH + H+ NAD+

CoA

CoA

NAD+

NAD+

NADH + H+

NAD+

NADH + H+

NADH + H+

FAD

FADH2

ATP ADP

+ P

CO2 C

Pyruvic

Acid C C C

Acetyl-CoA C C

Citric Acid

C C C C C C

CO2 C

Ketoglutaric

Acid

C C C C C

Succinic

Acid C C C C

CO2 C

Malic

Acid C C C C

Oxaloacetic

Acid C C C C

Hans!

(Krebs)

2 2

8 NADH

2 FADH2

2 NADH

6C

4C

4C

4C

Pair-Share…

Summarize the Krebs Cycle

3. Electron Transport Chain

Electron Transport

Hydrogen Ion Movement

ATP Production

ATP synthase

Channel

Inner Membrane

Matrix

Intermembrane Space

Electron Transport Chain

Energy Yield

Cell Resp Summary

p.139

p. 144 1-6,8

p.146 1,5,7,9,11,12,16,18,20

p. 147

P.147

chloroplast

sunlight

WATER

Thylakoid

chlorophyll

oxygen

Energy-carrying molecules transferred to light-independent reactions

CO2 from atmosphere

Light-indep. Rxns (Calvin Cycle)

6-C sugar (glucose)

WHY do your cells need Oxygen?

• oxygen must accept

the final e-

• If not, it stops the

ETC!

Summary of Cell Respiration

• 1ST STEP?

• Glycolysis- converts glucose to pyruvic

acid, only makes a little ATP

• Aerobic-

– pyruvic acid CO2 & H2O

– ONLY in presence of oxygen

– Creates A LOT of ATP

Comparing

Photosynthesis & Cell Resp.

• graphic organizer

Chemical Equation

C6H12O6 + 602 6CO2 + 6H2O + ATP

Light reactions and

Calvin Cycle

Harvesting Chemical Energy

• Cell Respiration

– Process in which

cells make ATP by

breaking down

organic compounds

– This is done in both

heterotrophs and

autotrophs