Download Cellular Respiration and Photosynthesis

Cellular Respiration and
Photosynthesis
Warm up
• What is the purpose of the
mitochondria and chloroplasts in
cells?
If you were preparing for a
marathon, which of these
would you need to take in
the most?
• Oxygen
• Sunlight
• Carbon dioxide
• food
ODIP
All cells use cellular
respiration
• Breaks down
macromolecules
(carbohydrates and
Phosphate
lipids) to make energy Adenine
groups
for the cell
• ATP (Adenosine
Triphosphate) =
energy in the cell
Ribose sugar
• Energy is released
when a phosphate
bond is broken
Cellular Respiration
(oxygen)
C6H12O6 + 6O2
(glucose)
(water)
6CO2 + 6H2O + ATP
(carbon dioxide)
3 Phases
• Glycolysis
• Kreb’s Cycle
• Electron transport chain (ETC)
Where respiration occurs
Glycolysis occurs in
the cytoplasm
Krebs Cycle and ETC
occur in the
mitochondria
Making Energy
Glycolysis
• Breaks down
glucose
• Makes 2 ATP per
glucose molecule
• Doesn’t need
oxygen
Kreb’s Cycle and ETC
• Continue the
breakdown of
glucose
• Makes 34 ATP per
glucose molecule
• Needs oxygen
The Mitochondrion is the
power station of the cell
•Only found in
eukaryotic cells
•Made of 2
membranes (inner
and outer
membrane)
•Has its own DNA!
One = mitochondrion, more than one = mitochondria
What happens if you don’t
have mitochondria?
• You can only do glycolysis
What happens if there isn’t
any oxygen?
Fermentation: a process that
occurs in the absence of
oxygen, produces alcohol or
lactic acid (causes
cramping in muscles)
Aerobic: oxygen present
Anaerobic: oxygen absent
Still does glycolysis, but no
Krebs or ETC