All living things need All living things need energyenergy to to carry out their life processescarry out their life processes

All Living ThingsNeed ENERGY

PhotosynthesisCellular

Respiration

Only in Plants

Need Sunlight

Plants at Night

Animals24/7

ENERGYENERGYThe ability to do work or The ability to do work or cause changecause change

How do living things get energy?How do living things get energy?

By burning fuelBy burning fuel Cars burn gasoline (non-living)Cars burn gasoline (non-living)

How do living organisms get How do living organisms get energy?energy?

Living organisms “burn” glucose (simple Living organisms “burn” glucose (simple sugar)sugar)

This is called CELLULAR RESPIRATIONThis is called CELLULAR RESPIRATION

Where does glucose come from?Where does glucose come from?

Animals ingest foodAnimals ingest food CarbohydratesCarbohydrates

Where does glucose come from?Where does glucose come from?

Plants are differentPlants are different Plants make their own food in a process Plants make their own food in a process

called PHOTOSYNTHESIScalled PHOTOSYNTHESIS

PHOTOSYNTHESISPHOTOSYNTHESIS

Food making process in Food making process in plants and other organisms plants and other organisms that use sunlightthat use sunlight

PHOTOSYNTHESISPHOTOSYNTHESIS

Only in plantsOnly in plantsOnly occurs when light is Only occurs when light is

shining on the plantshining on the plantAt night, plants use cellular At night, plants use cellular

respiration for energyrespiration for energy

Glucose

Photosynthesis VideoPhotosynthesis Video

http://www.teachersdomain.org/resources/tdc02/sci/life/stru/photosynth/index.html

Photosynthesis MoviePhotosynthesis Movie

Photosynthesis EquationPhotosynthesis Equation

Glucose

Illuminating PhotosynthesisIlluminating Photosynthesis

http://www.teachersdomain.org/resources/tdc02/sci/life/stru/methusweb/index.html

Chloroplasts and Chloroplasts and PhotosynthesisPhotosynthesis

1. Photosynthesis takes place in the (leaves / root) of a plant.

2. (Sunlight / Water) supplies the energy a plant needs to make sugar.

3.3. Carbon dioxide enters the plant through the Carbon dioxide enters the plant through the (xylem / stomata).(xylem / stomata).

4.4. The cell parts of green plants where The cell parts of green plants where photosynthesis takes place are (mesophyll / photosynthesis takes place are (mesophyll / chloroplasts).chloroplasts).

5.5. A plant gives off (oxygen / carbon dioxide) as A plant gives off (oxygen / carbon dioxide) as a byproduct during photosynthesis.a byproduct during photosynthesis.

6. Water is taken into a plant through the (roots / veins).

7.7. An organism that gets food by eating other An organism that gets food by eating other organisms is (an autotroph / a heterotroph).organisms is (an autotroph / a heterotroph).

Cellular RespirationCellular Respiration

A chemical reaction that takes place in the A chemical reaction that takes place in the mitochondria mitochondria

This reaction releases energy for the cell This reaction releases energy for the cell to useto use

Mitochondria MovieMitochondria Movie

OxygenGlucose

Carbon dioxide WaterEnergy

Cellular Respiration EquationCellular Respiration Equation

C6H12O6

CC66HH1212OO66 + 6O+ 6O22 6CO 6CO22 + 6H + 6H22O O + ENERGY + ENERGY

Glucose Glucose + Oxygen + Oxygen Carbon dioxide + Carbon dioxide + Water + ENERGYWater + ENERGY

1.1. What are the byproducts of cellular What are the byproducts of cellular respiration? respiration?

AnswerAnswer: Carbon dioxide, water and : Carbon dioxide, water and ENERGY!ENERGY!

2.2. What sugar is used for cellular What sugar is used for cellular respiration?respiration?

AnswerAnswer: glucose: glucose

CC66HH1212OO66 + 6O+ 6O22 6CO 6CO22 + 6H + 6H22O O + ENERGY + ENERGY

Glucose Glucose + Oxygen + Oxygen Carbon dioxide + Carbon dioxide + Water + ENERGYWater + ENERGY

3.3. Why does the body carry out cellular Why does the body carry out cellular respiration? respiration?

AnswerAnswer: to produce energy: to produce energy4.4. What substances does the body need to What substances does the body need to

carry out cellular respiration? carry out cellular respiration? AnswerAnswer: oxygen and glucose: oxygen and glucose

Photosynthesis and Respiration Photosynthesis and Respiration reactionsreactions

Oxygen and Glucose

Carbon dioxide and Water

Photosynthesis