What powers a cell?
• Photosynthesis experiments showed
us that Light is used by plants as the
energy to synthesize Glucose.
• And we know ATP the source of
energy (the little rechargeable
battery) used to by all cells to do work
Our guiding question
• The energy source for nearly all ecosystems is the sun
• The energy source for nearly all cellular processes is ATP
• How is energy from the sun
transformed and stored in molecules
of ATP to be used for cellular work?
P P P
Sun
ATP
Matter cycles as energy is transformed
P P P
Glucose
ATP
CHEMICAL
ENERGY
LIGHT
ENERGY
ENERGY
FOR CELLULAR
WORK
P P
Carbon dioxide
ADP + P
P
Trace how the energy is transformed
Photosynthesis
Cellular respiration
P P P
Glucose
ATP
CHEMICAL
ENERGY
LIGHT
ENERGY
P P
P
Carbon dioxide
Light
energy
Photosynthesis
Energy stored
in glucose
Cellular respiration
Energy stored
in ATP
How is energy from the sun
transformed and stored in ATP?
P P P
ATP
Sun
Light
energy
Photosynthesis
Energy
stored
in glucose
Cellular respiration
Energy
stored
in ATP
The goal:
We will learn the inputs and outputs of
cellular respiration and where it takes
place.
Light
energy
Photosynthesis
Energy
stored
in glucose
Cellular
respiration
Energy
stored
in ATP
Cellular respiration
• Glucose is broken into carbon dioxide and
water to gain energy to build ATP
• Oxygen is required as an input
• Most of the process occurs in
mitochondria
INPUTS
OUTPUTS
•Glucose
•Oxygen
•(ADP + P)
•Carbon dioxide
•Water
•ATP
Cellular respiration
INPUTS
OUTPUTS
C6H12O6
6 O2
6 CO2
6 H 2O
Glucose
Oxygen
Carbon
dioxide
Water