Learning Goal 9.4 – 9.8.15

Students will understand that aerobic respiration requires oxygen and gives a large yield of ATP from glucose that is immediately available as a source of energy for the cell .
https://www.youtube.com/watch?v=EfGlznwfu9U

Topic 2.8
Respiration

What is Respiration?

Cellular respiration is the controlled release of energy from organic compounds to produce ATP.
(Understanding 1)

What is Respiration?

ATP from cell respiration is immediately available as a source of energy in the cell.
(Understanding 2)

Respiration

Respiration can occur in the presence or absence of oxygen.

Respiration that occurs in the presence of oxygen is called aerobic respiration.

Respiration



The release of energy that is stored in the bonds between organic molecules.
The energy is then used for life processes.
ATP transfers the energy from the reactions where it is released to the reactions where it is used.

Energy Coupling

ATP Hydrolysis

Aerobic Respiration Overview https://www.youtube.com/watch?v=-Gb2EzF_XqA
A catabolic process – molecule is broken down, energy is released.

Glycolysis



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Takes place in the cytosol
Requires an energy investment
Common to all life on Earth
Ancient process – virtually unchanged through life history http://www.sumanasinc.com/webconten t/animations/content/cellularrespiration.h
tml

Glycolysis

2 ATP molecules needed to start the process
6 carbons 3 carbons
4 ATP molecules are produced, but there were two to begin with, so the net gain is 2 ATP molecules.

Glycolysis
Input
Glucose (1)
ATP (2)
ADP (4); P i
(4)
2NAD +
Output
Pyruvate (2)
ATP (4)
Substrate – level phosphorylation ( net of 2 when you subtract the investment of 2)
2NADH

Substrate Level Phosphorylation

Linking Reaction

Linking Reaction

Linking Reaction
Input
Pyruvate (1)
NAD +
Co-enzyme A
Output
CO
2
NADH
Acetyl Co-A

Linking
Reaction
2 more
ATP
Also known as the
Kreb cycle.
Occurs twice for each glucose molecule.

Krebs Cycle (Citric Acid Cycle)

Krebs Cycle (Citric Acid Cycle)
Input
Acetyl Co-A
NAD (3)
FAD
ADP + Pi
Output
Coenzyme A; CO
2
NADH (3) + H + (3)
(2)
FADH
2
ATP

Oxygen is required!
32 – 34 ATP

Electron Transport Chain https://www.youtube.co
m/watch?v=KGjCm566-
MY

Electron Transport Chain
Input
NADH
FADH
2
½ O
2
Output
NAD
FAD
H
2
O

https://www.youtube.com/watch?v=VER6xW_r1vc

Chemiosmosis https://www.youtu
be.com/watch?v=
3y1dO4nNaKY

Chemisomosis
Input
ADP; P i
H+
Output
ATP
H+

Learning Goal Assessment

Summarize the inputs and outputs of cellular respiration.

Works Cited


 http://wps.aw.com/bc_campbell_biology
_7/26/6656/1704000.cw/index.html
http://wps.aw.com/bc_campbell_biology
_7/26/6656/1704094.cw/index.html
http://kids.nationalgeographic.com/kids/ photos/awesome-athletes/#/ethiopianrunners-rtrvx0m_13891_600x450.jpg