Name________________________________________
Period__________
Respiration and Photosynthesis
Rearrange the following items to create the equation for Photosynthesis:
Oxygen, Carbon dioxide, Water, Glucose (sugar), Sunlight
Carbon dioxide
+
Water
sunlight
glucose (sugar) + oxygen
What happens in stage one of photosynthesis?
Capturing energy from sun
Where in the cell does stage one take place? Chloroplast
(leaves/chlorophyll)
What happens in stage two of photosynthesis? Plant uses energy to
make food (glucose/sugar)
Where in the cell does stage two take place? Chloroplast
In what part of the leaf does most photosynthesis take place? Why?
Top of leaf (upper layer)—where sunlight hits
During photosynthesis, what role does the stoma/stomata play?
Tiny holes in leaves where gases (carbon dioxide) enter and oxygen get
released
In which type of organism, autotroph or heterotroph, does photosynthesis
occur?
Rearrange the following items to create the equation for Cellular Respiration;
Oxygen, carbon dioxide, water, Glucose (sugar), ATP
Glucose + oxygen
carbon dioxide + water + ATP (energy)
What happens in stage one of cellular respiration?
 Molecules of glucose are broken down into smaller molecules
 Oxygen not involved
 Little energy is released
Where in the cell does stage one take place? cytoplasm
What happens in stage two of cellular respiration?
 Small molecules broken down further
 Requires oxygen
 Releases much energy (ATP)
Where in the cell does stage two take place? Mitochondria
Why is ATP important? ? It is an energy storage molecule
In which type of organism, autotroph or heterotroph, does cellular respiration
occur? Explain. Both have to use it to convert the glucose into a usable
form of energy (ATP)
Compare and Contrast
Photosynthesis
Both
Chloroplast
Cellular Respiration
Mitochondria
ATP energy
Products: sugar & oxygen
Energy involved
Heterotrophs
Raw materials: water
and carbon dioxide
autotrophs/plants
raw materials:
oxygen and sugar
products: water
and carbon dioxide
converts food to energy
converts energy to food
ongoing cycle-keeps
occurs in chloroplasts levels of oxygen and CO2
constant
uses sunlight
occurs in cytoplasm and
mitochondria