Top Banner
Chapter 4 Cellular Respiration GCA Mr. Cobb
33

Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Jan 03, 2016

Download

Documents

Kelly Randall
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Chapter 4Cellular Respiration

GCAMr. Cobb

Page 2: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Cellular respirationFood (glucose) into ATP

Not “breathing”

It can be either aerobic or anaerobic

Aerobic – require oxygen

Anaerobic – does not require oxygen

Page 3: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

3 Stages of 3 Stages of Aerobic Cellular RespirationAerobic Cellular Respiration

Glycolysis

Preparation Step &

Citric Acid Cycle (Kreb’s Cycle)

Electron Transport

Page 4: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Glycolysis1st step in aerobic or anaerobic

Location: cytoplasm of cell

Glucose 2 Pyruvic Acid molecules

This process does not require Oxygen.

Total energy made is 4 ATP, but 2 is needed to start the rxn. 2 ATP is extra.

What is made? 2 NADPH, 2 ATP, 2 Pyruvic Acids

Page 5: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Glycolysis

glucose pyruvate

Page 6: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.
Page 7: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Glycolysis

Glucose Pyruvic acid

Pyruvic Acid

Page 8: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

AerobicO2 required

Release H2O and CO2 and energy

Remember that cellular respiration is the opposite of photosynthesis.

C6H1206 + 6 O2 6 CO2 + 6 H2O + ATP

Page 9: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Aerobic RespirationGlycolysis is 1st step and in both aerobic or

anaerobic respiration

2 Steps in Aerobic Respiration:

2. Citric Acid Cycle or Krebs Cycle

3. Hydrogen and Electron Transport System

Page 10: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Cellular Respiration Flowchart (aerobic)

Glucose(C6H1206)

+Oxygen

(02)

Glycolysis KrebsCycle

ElectronTransport

Chain

Carbon Dioxide

(CO2)+

Water(H2O)

+ATP

Page 11: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Citric Acid Cycle (Krebs)2 Pyruvic acids from glycolysis diffuses into the

mitochondria.

Pyruvic acid is turned into acetyl CoA and CO2 is released.

One glucose molecule makes the cycle turn twice

Chemical rxns in Mitochondria

Products: 6 NADH, 2 FADH2, 2 ATP and 4 CO2

Page 12: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Krebs cyclepyruvate acetyl CoA & CO2

Page 13: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Citric Acid Production

 The Krebs Cycle

Section 9-2

Mitochondrion

Page 14: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

H+ and e- transport molecules:

1) NADH

2) FADH2

Page 15: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Electron Transport NADH and FADH2 from Krebs Cycle are pumped

by electron energy across the inner membrane (cristae) and creates a concentration difference.

The H ions come back across through the ATP synthase and create ATP.

Oxygen (from what we breathe in) comes in and binds to the H ions to make water.

Page 16: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Electron Transport32 ATP

Water is made from the Hydrogen and Oxygen.

Page 17: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.
Page 18: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.
Page 19: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Electron TransportElectron Transport

Mitochondria * two membranes

- outer - inner (folded)

Page 20: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Animationhttp://www.science.smith.edu/departments/

Biology/Bio231/krebs.html

Page 21: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

ELECTRON TRANSPORT

CHAIN

Page 22: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

matrix

HH++

HH++

HH++

HH++

HH++

HH++

MitochondriaMitochondria

HH++

HH++

NADH

HH++

FADH2

e-

HH++

HH++ e-

HH++

Page 23: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Electrons

* passed across inner membrane

* their energy gradually decreases

* energy used to transport HH++

into the intermembrane space.

OxygenOxygen * the final electron acceptor * joins with HH++ to produce HH22O.O.

If there is no oxygen,the electron chain stops

because there is no way to release electrons . .

electrons

Page 24: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

matrix

HH++

HH++

HH++

HH++

HH++

HH++

MitochondriaMitochondria

HH++

HH++

NADH

HH++

FADH2

e-

HH++

HH++ e-

HH++

Page 25: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

What happens when there is no oxygen

to accept the electrons?

* glycolysis done

* then fermentation in cytoplasm

2 kinds

1)lactic acid

2)ethanol

Page 26: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

26

Products of Fermentation

Page 27: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

fermentation

0 ATP

Just takes e-& H+ off NADH

so glycolysis can continue

Page 28: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Alcoholic FermentationAlcoholic Fermentation

After glucose broken down to pyruvate,

then pyruvate broken down

to CO2 and ETHANOL.

Page 29: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.
Page 30: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Alcoholic FermentationAlcoholic Fermentation

by bacteria & yeast

used to make bread, alcohol,

Page 31: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.
Page 32: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

Lactic Acid fermentation

By human muscle cells& bacteria

Used to make cheese, yogurt, sour kraut

Page 33: Chapter 4 Cellular Respiration GCA Mr. Cobb Cellular respiration Food (glucose) into ATP Not “breathing” It can be either aerobic or anaerobic Aerobic.

If you work anaerobically,

fermentation occurs in your muscles

lactic acid builds up

results in results in muscle sorenessmuscle soreness