CELLULAR RESPIRATION
&
PHOTOSYNTHESIS
HOW CELLS OBTAIN ENERGY
WHAT IS CELLULAR RESPIRATION?
• Cellular respiration is the process by which glucose
(C6H12O6) is broken down to release energy for making
ATP, another form of chemical energy.
• The goal of cellular respiration is to make
ATP ENERGY
• https://www.brainpop.com/science/cellularlifeandgenetics/cellularrespiration/
WHERE DOES CELLULAR
RESPIRATION HAPPEN?
• The first stage of
cellular respiration,
Glycolysis, occurs in
the cytoplasm of the
cell.
WHERE DOES CELLULAR RESPIRATION HAPPEN?
The second
reaction in
cellular
respiration
occurs within
the cells
Mitochondria
Apollo 13 clip
https://www.youtube.co
m/watch?v=C2YZnTL596Q
BREAK DOWN THE WORDS!
• What does Glycolysis mean?
• Glyco =
• Lysis=
• In table team research the meaning of both word parts.
Write it in your iNB page 29.
WHAT IS GLUCOSE?
• Glucose is a form of sugar used by cells to make energy.
• The chemical formula for glucose is C6H12O6
• So what does the C, H and O stand for?
Discuss the possible answers in your table teams
C=
H=
O=
CHEMICAL FORMULAS
•
•
•
•
•
•
All reactions have a chemical formula.
Chemical formulas are written as reactants that change to products.
The changes that happens in a chemical reaction is
represented by an arrow.
What is a reactant?
What is a product?
• In table teams research what each word means,
write your answers on page 29 iNB.
CHEMICAL FORMULAS
• We can represent the reaction that occurs in cellular respiration as
a chemical formula as well.
• The chemical formula for cellular respiration is:
• Aerobic Cellular Respiration:
C6H12O6 + 6 O2 → 6 H2O + 6 CO2 + energy (ATP)
CELLULAR RESPIRATIONS CHEMICAL FORMULA
• So what does this mean? Lets break it down…
C6H12O6 + 6 O2 → 6 H2O + 6 CO2 + energy (ATP)
CELLULAR RESPIRATION
• Cellular respiration occurs only in Eukaryotic cell.
• Explain
• why prokaryotic cells do not use cellular respiration.
• Write your answer on pg 29 iNB.
CELLULAR RESPIRATION
• On iNB page 30
• Write a summary 4-6 lines explaining the steps of cellular
respiration using related vocabulary.
PHOTOSYNTHESIS
• What is photosynthesis?
• A series of chemical reactions that convert Light Energy, Water
and CO2 (carbon dioxide) into the food-energy molecule
glucose and give off oxygen as a product.
PHOTOSYNTHESIS
• The process of photosynthesis takes place in the chloroplast of
plant cells.
• Autotrophs are organisms that use energy to make their
own food.
• What is an example?
• Heterotrophs are organisms that obtain energy from food
they eat.
• What is an example?
PHOTOSYNTHESIS
• Photosynthesis is the cellular process of using sunlight to produce
energy
• Plants take in carbon dioxide and water to convert it to
carbohydrates (sugars and starches)
PHOTOSYNTHESIS
• On page 33 in iNB create an accurate drawing how
photosynthesis works.
CELLULAR RESPIRATION VS. PHOTOSYNTHESIS
On pg 34 iNB write the chemical formulas for both cellular respiration and
photosynthesis (see textbook page 74)
What do you notice about the reactants and products of each process?