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Cell Processes
Photosynthesis and Cellular Respiration
Metabolism
Sum of all the chemical reactions in a cell Includes reactions that break down food to
get energy for the cell Includes reactions that take molecules and
build bigger compounds to help the cell function
Sum of all the chemical reactions in a cell Includes reactions that break down food to
get energy for the cell Includes reactions that take molecules and
build bigger compounds to help the cell function
Producers
What is a producer?An autotrophic organism
Autotrophic means the organism makes its own food from raw materials
Example: plantsPlants make their own food (sugars aka
glucose, starch, cellulose aka carbohydrates!)
Plants create their own energy by making their own food
What is a producer?An autotrophic organism
Autotrophic means the organism makes its own food from raw materials
Example: plantsPlants make their own food (sugars aka
glucose, starch, cellulose aka carbohydrates!)
Plants create their own energy by making their own food
http://www.units.muohio.edu/dragonfly/itc/blackwal.gif
http://www.hawaiianmagic.net/images/plantsampler.jpeg
Cellular Process: Photosynthesis
Carried out by producers (autotrophs) Inputs: carbon dioxide, water, energy from
the sunOutputs: glucose (sugar) and oxygenChemical equation:6 CO2 + 12 H2O + light energy --> C6H12O6 +
6 O2 + 6 H2OPhotosynthesis: photo = light; synthesis =
putting simple things together to make something complex
Carried out by producers (autotrophs) Inputs: carbon dioxide, water, energy from
the sunOutputs: glucose (sugar) and oxygenChemical equation:6 CO2 + 12 H2O + light energy --> C6H12O6 +
6 O2 + 6 H2OPhotosynthesis: photo = light; synthesis =
putting simple things together to make something complex
Cellular Process: Photosynthesis
Photosynthesis: the process a plant (or other autotroph) goes through to convert sunlight and raw materials into food (sugar) for the plant
Photosynthesis: the process a plant (or other autotroph) goes through to convert sunlight and raw materials into food (sugar) for the plant
Inputs
Green plant(autotroph) Outputs
CO2
H2O
Sunlight
Glucose (C6H12O6)
O2
Consumers
Organisms that get their food by eating other organisms and raw materials
Consumers are HETEROTROPHIC organisms: they cannot make their own food, they do not do the process of photosynthesis
Organisms that get their food by eating other organisms and raw materials
Consumers are HETEROTROPHIC organisms: they cannot make their own food, they do not do the process of photosynthesis
Cellular Process: Cellular Respiration
Plant and animal cells do cellular respiration to get energy from their food to fuel all other cellular processes and reactions
Cellular respiration: series of reactions that use oxygen to break down the energy from food (glucose and other macromolecules) to get energy for the cell to use in other reactions and processes
Plant and animal cells do cellular respiration to get energy from their food to fuel all other cellular processes and reactions
Cellular respiration: series of reactions that use oxygen to break down the energy from food (glucose and other macromolecules) to get energy for the cell to use in other reactions and processes
Cellular Process: Cellular Respiration
Inputs OutputsConsumer
Glucose
oxygen
Carbon dioxide
water
Energy (ATP)
Cellular Process: Cellular Respiration
Glucose + oxygen --> carbon dioxide + water + ATP (energy for the cell)
Glucose + oxygen --> carbon dioxide + water + ATP (energy for the cell)
C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O + ATP (energy)
http://www.biology.lsu.edu/introbio/Link2/glucose.gif http://www.ebi.ac.uk/chebi/displayImage.do?defaultImage=true&imageIndex=0&chebiId=16526
http://www.eou.edu/chemweb/molmodel/images/h2ofc.gif http://www.bristol.ac.uk/Depts/Chemistry/MOTM/atp/atp.gif
Photosynthesis & Cellular Respiration
They are interrelated!Outputs (products) of photosynthesis are
the inputs (reactants) of cellular respiration
They are interrelated!Outputs (products) of photosynthesis are
the inputs (reactants) of cellular respiration
InputsGreen plant(autotroph) Outputs
CO2
H2O
SunlightO2
InputsOutputsConsumer
H2O
Energy (ATP)
Glucose (C6H12O6)
CO2
Outputs of cellular respiration are the inputs of photosynthesis
Cellular Process: Cellular Respiration
Consumers undergo cellular respiration in every cell 24/7
Producers do the process of photosynthesis only during sunlight hours
Producers undergo cellular respiration at night--> the sugar the plant made during the day gets broken down at night to give the plant cell energy to perform other processes
Consumers undergo cellular respiration in every cell 24/7
Producers do the process of photosynthesis only during sunlight hours
Producers undergo cellular respiration at night--> the sugar the plant made during the day gets broken down at night to give the plant cell energy to perform other processes
