Mary Beth Bielicki
Giana Iannacone
Conor Gammond
Food is a Source of Energy and Building
Materials for Organisms (from a forest)
 Building Materials let organisms grow
 Energy helps us to do everyday activities
 Organisms get food from other organisms
PPT clipart: acorn
http://www.bulkfoods.c
om/pictures/1267.jpg
PPT clipart: elk
Plants are the Source of Energy and
Building Materials for All Living Things
 Plants get energy and building materials from the sun
 All organisms rely on plants for nutrients
 Organisms eat plants
 A chain reaction occurs
PPT clipart:
domino
PPT clipart:
domino
Needs of Organisms and Cells are Related
 Cells and organisms need energy and building
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materials to function
They need energy to do their daily jobs
They need building materials to grow
Organisms are made up of cells.
The needs of cells and organisms are the same
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Needs of Organisms are Related to
Age and Health
 As you grow, your body has different nutritional needs
 If you get a broken bone or a wound, the organism
needs protein for it to heal.
PPT clipart: grandma
(scroll)
PPT clipart: broken arm (scroll)
PPT clipart: sick (scroll)
Energy and Building Materials Pass from
One Thing to the Next
 A food web is a
way to display
what eats what
 A food web has
many options of
what eats what
 Organisms
depend on each
other
http://carrier.p
bworks.com/f/
FOODWEB.gif
Self-Sustaining: What does it mean?
 Self-sustaining systems don’t need anything added to
continue to live
 Everything that is in a self-sustaining ecosystem is all
that’s in it
 For it to be self-sustaining, all animals need to be able
to get enough energy and protein.
PPT clipart: bubbles (scroll down)
Mary Beth Bielicki
Giana Iannacone
Conor Gammond