Transcript Life Science Big Ideas

Mark Watrin : Science Coordinator ESD112
What every student should learn
about Life Science
• What does it mean to be and stay alive?
• What role does each living organism play in
the environment?
• How do we know if organisms are related? or
• What is the evidence that all living organisms use a
common genetic information system?
ORDER + A
The Scientific Rules for being considered
Living
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•
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•
What does it mean to be
and stay alive?
O= Organized by Cells
R = Respond to stimuli from the environment
D= Develop and Grow
E= Obtain energy from the environment
R= Reproduce
(the population if not the individual)
+
• A = Adapt to changes in the environment
How do Living organisms fit into
their Environment?
The Environment Super Store
O2 CO2
• Aisle 1 Gas Exchange
• Caution 70% of this aisle is underwater
• Aisle 2 Building Materials
• Aisle 3 Energy
• Aisle 4 Variety
Light
C, O, H, N,
Chemical
Ca, Mg, Fe, K, P, ……..
Energy Flows though the
Environment
Light Energy
Chemical Energy
Plants (producers)
Heat
Animals (consumers)
Bacteria (decomposers)
Plants
(speeds up energy flow)
(consume what they produce)
Matter Cycles in the Environment
How do we know if organisms are
related?
Structural Similarities
Plants
• Spores
• Cones
• Flowers
Animals
no skeleton
exoskeleton
inside skeleton
• Needles
• Broad Leaves
•
Scales
Feather
Fur
Genetic Similarities
Genetic Similarities