Download Cellular Respiration

Warm-up
1. Define Cellular Respiration
2. Write-out the equation for Cellular
Respiration
3. In what organelle does Cellular
Respiration occur?
4. What organisms do it?
What do Carbohydrates (glucose, simple
sugars) do for organism such as you and
me?
They are the primary source of energy!
Cellular Respiration
Cellular Respiration
During photosynthesis, plants make and
store carbohydrates such as glucose.
Plants must then break down glucose in
order to release and use the energy it
contains. This happens in a process called
respiration.
1. What is it?
The turning of FOOD into ENERGY
2. Why do we need cell
respiration?
Does FOOD = ENERGY
NO!!!
ATP= Energy
How do they do this?
Cellular Respiration
• Respiration takes
place in cell parts
called the
mitochondrion.
Cellular Respiration
• Respiration is not
unique to plant cells.
• ALL living things meet
their energy needs
through respiration
Humans must turn the food they eat into
ATP (energy) …. We do that through the
process of cell respiration.
“Respiration”?
Many people use the word respiration to
mean “breathing.” When we breathe air
into our lungs, oxygen in the air enters our
blood and is delivered to body cells. It is in
cells that respiration actually takes place.
Respiration Equation
C6H12O6 + 6O2 = 6CO2 + 6H2O + energy
Glucose + Oxygen =Carbon + water + energy
dioxide
Cellular Respiration vs.
Photosynthesis
• Respiration can be thought of as the
opposite of photosynthesis.
Photosynthesis:
6CO2 + 6H2O + sunlight = C6H12O6 + 6O2
Carbon + water + energy =Glucose + Oxygen
dioxide
***Remember***
Photosynthesis:
6CO2 + 6H2O + sunlight = C6H12O6 + 6O2
Carbon + water + energy =Glucose + Oxygen
Dioxide
Respiration:
C6H12O6 + 6O2 = 6CO2 + 6H2O + energy
Glucose + Oxygen =Carbon + water + energy
dioxide
There are two types of cellular
respiration:
1. Aerobic
2. Anaerobic
1. Aerobic- with oxygen
C6H12O6 + O2 = CO2 + H2O + ATP
Glucose +Oxygen =Carbon + water + energy
dioxide
2. Anaerobic- WITHOUT oxygen
C6H12O6 = CO2 + H2O + ATP
Glucose = Carbon + water + Energy
dioxide
Two types of anaerobic
1. Humans
2. Yeast
Lactic Acid
Fermentation
Alcoholic Fermentation
Yeast ‘eat’ the sugars
Lactic Acid builds up in
and turn them into
the muscles, causing
alcohol
you to ‘feel the burn’.
Respiration
- Is the cellular process that uses oxygen to
break down glucose into carbon dioxide
and water, which releases energy.
So if respiration “undoes”
photosynthesis, what is the
point?
Why can’t a plant just use the energy
from the Sun directly without going
through these two complex processes?
The point.
The light energy from the Sun first must be
converted to a usable form- chemical
energy. This stored energy allows a plant
to grow and stay alive even at night and
on cloudy days, when not enough sunlight
is available for the plant to keep making
carbohydrates.