Cellular Respiration

November 16

Do Now• Collect returned assignments (in hanging

folders)• Pick up a new tracker• Begin working on today’s warm-up:

What is aerobic exercise?

Upcoming assessments• Individual! Quizlet on Tuesday/Wednesday – Food webs & Energy flow– Photosynthesis

• Individual! Quest on Monday/Tuesday– Food webs & Energy Flow– Photosynthesis– Cellular Respiration– Carbon Cycle– 1 question recycled from Quiz 1

Photosynthesis & Energy Flow Concept Check

Photosynthesis & Energy Flow Concept Check

• Where do plants get their energy?

Photosynthesis & Energy Flow Concept Check

• Where do plants get their energy?

Photosynthesis & Energy Flow Concept Check

• What is the equation for photosynthesis?

Photosynthesis & Energy Flow Concept Check

• What is the equation for photosynthesis?

+ + +

Water + Carbon Dioxide + Energy Sugar + Oxygen

Photosynthesis & Energy Flow Concept Check

• Where do consumers (heterotrophs) get their energy?

Photosynthesis & Energy Flow Concept Check

• Where do consumers (heterotrophs) get their energy?– From the food

they eat!

Photosynthesis & Energy Flow Concept Check

• What happens to the energy available to an organism?

Photosynthesis & Energy Flow Concept Check

• What happens to the energy available to an organism?– MOST of the energy they use– SOME of the energy moves into the atmosphere

as heat– 10% of the energy is stored in plant tissues

Photosynthesis: Storing energy from the sun in sugar

Photosynthesis: Releasing energy in sugar to power life

Cellular respiration:: Releasing energy in sugar to power life

Objective

• Compare and contrast photosynthesis and cellular respiration.

By the end of class, students will be able to:

Cellular respiration takes place in mitochondria

Inputs of cellular respiration: sugar

Inputs of cellular respiration: sugar

Return to the warm-up• What is aerobic exercise?

Inputs of cellular respiration: oxygen

Outputs of cellular respiration: energy

Outputs of cellular respiration: carbon dioxide

CarbonOxygen

Oxygen

Outputs of cellular respiration: water

Oxygen

HydrogenHydrogen

Equation of cellular respiration

Sugar + Oxygen Energy + Carbon Dioxide + Water

+ + +

INPUTS OUTPUTS

What is the relationship between the equations for photosynthesis and cellular respiration?

Who uses cellular respiration?

Who uses cellular respiration?• Every organism with access to oxygen– Animals AND Plants

• Fermentation is less efficient– (less energy per molecule of sugar)

Organisms without access to oxygen break down sugar for energy by fermentation

Fermentation results in alcohol or lactic acid

Humans can use fermentation during anaerobic exercise

Lactic acid in your muscles makes you sore

Muscles specialized for aerobic and anaerobic activity explain dark and light meat in turkey.

http://www.slate.com/articles/life/the_spectator/2010/11/the_unbearable_whiteness_of_white_meat.html

Compare and contrast photosynthesis and cellular respiration

Exit ticket• How are the outputs (products) of

photosynthesis related to the inputs (reactants) of cellular respiration?