Photosynthesis ALL CELLS NEED ENERGY ENERGY Living Things

Photosynthesis

ALL CELLS NEED ENERGY! ENERGY

Living Things Use Energy • How do you get energy? • What about plants?

What is photosynthesis? • Process by which plants use sunlight to make their own food • Photo = “light” • Synth= “to make” • Photosynthesis = to make from light.

Plant Cell Structure It all starts w/ a leaf…. which have chloroplasts… made of plant cells…. filled with chlorophyll.

Plant Cell Structure chloroplasts Plant organelle in which photosynthesis occurs. Chlorophyll • Green pigment (what makes leaves green) • Inside chloroplasts. • Absorbs light energy from sunlight.

The chlorophyll absorbs the sunlight.

Photosynthesis CO 2 Carbon Dioxide (air) IN O 2 Oxygen UT O Energy IN OU T IN H 2 O (Water) C 6 H 12 O 6 (Glucose) (Sugar)

EQUATION FOR PHOTOSYNTHESIS CARBON DIOXIDE WATER CO 2 + H 2 O + GLUCOSE ENERGY C 6 H 12 O 6 + • Plant food. • Used for growth or reproduction • OR stored for later. OXYGEN O 2 Waste

Awesome Miss. Eades. . . I could care less. Tell me one reason why I should even care. What does this have to do with me?

Well, it applies to you if you want to keep…. – Breathing…. . – Eating…. . – Living…. .

Plants and animals need each other to survive.

ALL CELLS NEED ENERGY! ENERGY

Respiration Process by which animal cells release energy from food.

RESPIRATION O 2 Oxygen C 6 H 12 O 6 (Glucose) (Sugar) CO 2 IN T U O IN OU Carbon Dioxide (air) T H 2 O (Water)

EQUATION FOR RESPIRATION C 6 H 12 O 6 + GLUCOSE In our food O 2 OXYGEN CO 2 + H 2 O + CARBON DIOXIDE WATER • Toxic Waste ENERGY Energy released from food for our bodies to use.

PHOTOSYNTHESIS CO 2 + H 2 O + C 6 H 12 O 6 + O 2 ENERGY C 6 H 12 O 6 + O 2 CO 2 + H 2 O + RESPIRATION ENERGY

In Summary…

In summary, • Plants need the CO 2 we release… • We need the O 2 plants release… • Plants/Animals depend upon each other for survival. • Plants use photosynthesis • Animals use respiration