Respiration (cellular)

Respiration (cellular)Respiration (cellular) Process in which cells use oxygen to break down Process in which cells use oxygen to break down

food molecules to release energy (ATP)food molecules to release energy (ATP)

Aerobic RespirationAerobic Respiration With oxygenWith oxygen

Chemical Equation-Chemical Equation-

CC66HH1212OO66 + O + O22 CO CO2 2 + H+ H22O + energy O + energy (ATP) (ATP)

Reactants Reactants

Glucose Glucose (C(C66HH1212OO66))• Organisms receive from carbohydrates taken Organisms receive from carbohydrates taken

inin• Product of photosynthesisProduct of photosynthesis

ReactantsReactants

Oxygen Oxygen (O(O22))• Organisms receive from their environment, Organisms receive from their environment,

air, water, soilair, water, soil• Product of photosynthesisProduct of photosynthesis

Products-Products-

Carbon dioxideCarbon dioxide (CO(CO22))

• Released from the Released from the organism into organism into their environment, their environment, air, water, soil air, water, soil (breathing/gas (breathing/gas exchange)exchange)

Products-Products- Water (HWater (H22O)O)

• Also released from Also released from the organism into the organism into their environment their environment

Energy (ATP)Energy (ATP)

Aerobic respiration produces a total of 38 Aerobic respiration produces a total of 38 ATP for every molecule of glucose ATP for every molecule of glucose

OrganelleOrganelle

Cytoplasm Cytoplasm Mitochondria Mitochondria

Aerobic RespirationAerobic Respiration 2 step process 2 step process Step 1-Step 1- glycolysisglycolysis

Step 2- respiration Step 2- respiration

Step 1 Cytoplasm

Step 2Mitochondria

Krebs Cycle

Step 1-Step 1- GlycolysisGlycolysis

• Occurs in the cytoplasm of a cellOccurs in the cytoplasm of a cell• Does not use oxygenDoes not use oxygen• Uses 2 molecules of ATP Uses 2 molecules of ATP • Produces 4 molecules of ATP Produces 4 molecules of ATP • Net gain of 2 molecules ATPNet gain of 2 molecules ATP• Glucose broken down to produce Pyruvic Glucose broken down to produce Pyruvic

AcidAcid

Step 2- RespirationStep 2- Respiration RespirationRespiration

• Occurs in the mitochondria of the cellOccurs in the mitochondria of the cell• Involves the Krebs cycleInvolves the Krebs cycle• Involves an electron transport chainInvolves an electron transport chain• Uses oxygenUses oxygen• Produces 34 molecules of ATPProduces 34 molecules of ATP

Aerobic Respiration SummaryAerobic Respiration Summary Total process Total process

produces 38 ATPproduces 38 ATP Requires 2 ATPRequires 2 ATP Net gain of 36 Net gain of 36

ATPATP

Anaerobic Anaerobic Respiration/FermentationRespiration/Fermentation

Respiration Respiration without oxygenwithout oxygen

Anaerobic Anaerobic Respiration/FermentationRespiration/Fermentation

Requires 2 molecules of ATPRequires 2 molecules of ATP Produces 4 molecules of ATPProduces 4 molecules of ATP Net gain of 2 molecules of ATPNet gain of 2 molecules of ATP

2 Types2 Types Alcohol Alcohol

fermentation-fermentation- bakers & brewers- bakers & brewers- products are carbon products are carbon dioxide and alcoholdioxide and alcohol

Lactic acid Lactic acid fermentation-fermentation- in in muscle cells, causes muscle cells, causes soreness and fatigue soreness and fatigue in musclein muscle

Step 1 Cytoplasm GLYCOLYSIS

Step 2MitochondriaRESPIRATION

Krebs Cycle

C6H12O6

2 ATP 4 ATP

Pyruvic Acid

O2 34 ATP

H2O CO2

All Images- Clip ArtAll Images- Clip Art