Photosynthesis
and
Cellular
Respiration
Review Questions: Label the parts of the atom
What happens when an electron gets excited?
Energy is stored in each chemical bond.
What are some different forms of energy?
Light
Heat
Kinetic
Electrical
Sound
Chemical
Sometimes to make a chemical reaction take
place you have to add energy.
Fire is a chemical reaction, but you have to
add heat for the reaction to begin.
3P4 + 10 KClO3 + O2 + Heat
3P4O10 + 10 KCl + CO2+ Light Energy
Exergonic Chemical Reactions give off energy
Exergonic chemical reactions give off energy.
Endergonic chemical reactions require that
energy be add to take place.
ALL CELLS NEED ENERGY
Why?
Cells need energy to carry out all the processes
that allow them to LIVE, GROW and REPRODUCE
Metabolism: The sum total of all the chemical
reactions that take place within the cell
All living organisms can be divided into 2 groups.
Producers/ Autotrophs: use photosynthesis to store their
own energy as sugar, (glucose).
Consumers/ Heterotrophs: must eat green plants or
something that ate a green plant to get the plant’s
stored energy.
Cells need and use energy to perform everyday
activities.
This energy is stored in the chemical bonds of a
special molecule.
ATP
Adenosine Triphosphate
Photosynthesis
The process by which plants use light energy from
the sun to change carbon dioxide gas and water
into sugar(glucose).
Energy is stored in each of the chemical
bonds of glucose.
Glucose Molecule.
Cellular Respiration
The process by which energy stored in food/
glucose is broken down into a form that your
body can use.
What is the purpose of Photosynthesis?
What is the purpose of Cellular Respiration?
Do plants undergo Cellular Respiration?
Organic Chemistry
Carbon C, Hydrogen H, and Oxygen O are apart of
the molecules found in living organisms.
Carbohydrates are used by the body for
Energy: glucose >> ATP
Structural Support: the cell wall in plant
cells, exoskeleton in insects
Carbohydrates are made up of smaller sub-units called
simple sugars or monosaccharaides.
C6H12O6
C6H12O6
C6H12O6
Monosaccharaides can combine for form disaccharides.
C6H12O6
C12H22O12
C6H12O6