Download Cellular Respiration Overview

 The
process in which organisms take
molecules broken down from food and
release the chemical energy stored in the
chemical bonds of those molecules
• Remember, food is NOT the direct source of
energy!
 Heterotrophs
 Only
and Autotrophs
Autotrophs undergo
PHOTOSYNTHESIS
Goal: break
down glucose to form
two pyruvates
Who: ALL life on Earth performs
Glycolysis
Where: The Cytoplasm
Glycolysis produces 4 ATP’s and 2
NADH
• Uses 2 ATP’s in the process for a NET of 2
ATP’s and 2 NADH
 Goal: Take
Pyruvate and produce NADH &
FADH2
 Where: The inner mitochondrial matrix
 Net yield:
•
•
•
•
8 NADH
2 FADH2
2 ATP
6 CO2
 Goal: Break
down NADH and FADH2 by
pumping H+ into the outer compartment
of the mitochondria
 Where: The mitochondria
 A gradient is created to produce ATP
• Electrons continue down the energy gradient
until they meet the ultimate electron acceptor
(Oxygen!)
 Produces 32 ATP
• ATP is generated as H+ moves down its
concentration gradient through a special
enzyme called ATP Synthase
Cellular Respiration
 C6H12O6
 What
+ 6O2 → 6CO2 + 6H2O
do you notice about this equation?
Have you seen bits of it before??
 Working
in small groups (2-3) complete
the Case Study on my website
 Answer the Questions at the end of the
section on a separate sheet of paper
• Label each part clearly!