Aim How are inorganic molecules turned into organic




















- Slides: 20

Aim: How are inorganic molecules turned into organic molecules during photosynthesis? Do Now: Name two things plants need in order to survive.

Agenda • Review (5 min) • Quiz (30 min) • Photosynthesis (20) Announcements QUIZ TOMORROW!!!

• The SUN is the source of energy for all life on the planet. • Plants can turn sunlight into food, which animals can then eat.

Plants can make their own food from sunlight (they don’t need to eat). Organisms that can produce (create) their own food are called: In Greek, auto = self and trophe = nutrition Autotrophs are also sometimes called producers. What are some examples of autotrophs?

Organisms that need to eat for nutrition are called: In Greek, hetero = another and trophe = nutrition Heterotrophs are also sometimes called consumers because they consume the food that producers create. What are some examples of heterotrophs?

How living things get energy (Know this information!) Energy source Name Example Not from food/eating Pine trees from the sun From food/ eating Deer eat grass, lions eat zebra

But HOW do plants get their energy from the sun?

Photosynthesis (definition): Photosynthesis is the chemical reaction that uses the energy from the sunlight to convert water and carbon dioxide into oxygen and high energy sugars (glucose). Use: Water Carbon dioxide Sunlight Get out: Oxygen Glucose

Time for the four key things that plants need to do photosynthesis…

• From the sun! (these are redwoods, the tallest trees in the world!)


In which organelles does this process take place? • Light hits the chloroplasts in green leaves. • That’s where photosynthesis happens. • In chloroplasts, chlorophyll is the green pigment that absorbs sunlight.

• From the soil, up through a plant’s roots • Or from rain Water in


• From the air, through small holes in leaves called stomata ( The world’s oldest tree is 4800 years old! It’s in California. )


• New vocab!!! • In chloroplasts, chlorophyll is the green pigment that absorbs sunlight and turns it into energy.

Chemical equation for Photosynthesis: Use: Get out: Sunlight Oxygen Water Glucose (food!!) Carbon dioxide Chemical equation: light + 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 light + carbon dioxide + water glucose + oxygen

MEMORIZE THIS EQUATION!!!! It is your homework for tonight light + 6 CO 2 + 6 H 2 O C 6 H 12 O 6 + 6 O 2 light + carbon dioxide + water glucose + oxygen Trick for remembering photosynthesis: Plants. . . Every child will get one. Photosynthesis: energy + carbon dioxide + water glucose + oxygen

In your notebooks, for participation credit… • Draw your own tree that is doing photosynthesis • Label what the tree is using and what the tree is producing • Be creative!