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CELLULAR ENERGIES
Where is energy created in a
eukaryotic cell?
What about in
prokaryotic
cells?
What is energy in biology?
ATP
Adenosine TriPhosphate
Whoa!
HOT stuff!
2007-2008
ATP: energy molecule
What is energy?
Calorie = Energy
A calorie is a heat
unit of energy
ATP CYCLE
How do we define Cellular
Respiration?
Release energy from
food to make ATP
Who does
Respiration?
All Living
Organisms!
Aerobic Resp
Req. OXYGEN
Makes a LOT ATP
Anaerobic Resp.
NO OXYGEN
Makes a LITTLE ATP
Aerobic or Anaerobic?
BACTERIA
PROTIST
PLANTS
ANIMALS
FUNGUS (YEAST)
ANAEROBIC
1st Step: Glycolysis – Splitting of Glucose
EXERGONIC
(energy releasing)
Phosphorylation
NAD
CYTOPLASM
Where does
glycolysis occur?
Flow Chart
FERMENTATION
Respiration with
NO oxygen
Chapter 23
Bacteria and Yeast in Food Production
What happens to the pyruvate?
FERMENTATION: yeast & bacteria
Fermentation in Humans
Build up
of Lactic
Acid in
Muscles
Lack of
Oxygen
IN HUMANS
Choose your own adventure!
AEROBIC RESPIRATION
Where does
it occur in a
cell?
Why the
extra
layers?
Increase
Surface Area
MITOCHONDRIA
AEROBIC RESPIRATION
If O2 is present!
STEP 1: Glycolysis
Glucose
STEP 2: Kreb Cycle
STEP 3: Electron Transport
Chain (ETC)
Pyruvate
Pyruvate
From Food To ATP
ATP released for cellular work
Glucose
many tiny steps
CO2 + H2O
All organic
molecules!
Who does photosynthesis?
Chemoautotrophs
CHLOROPLAST
Increase Surface
Area
CHLOROPHYLL
• green pigment
• converts solar energy
into chemical energy
(ATP)
The World of Plants: Photosynthesis
US
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