WARM-UP 1.Using the chemical formulas written on slips of paper in the envelop at your desk, arrange...
25
WARM-UP 1. Using the chemical formulas written on slips of paper in the envelop at your desk, arrange them into the correct formula for photosynthesis. What happens to the glucose that’s been formed? 2. Now rearrange them into the correct formula for cellular respiration. What happens to the carbon dioxide that’s been formed?
WARM-UP 1.Using the chemical formulas written on slips of paper in the envelop at your desk, arrange them into the correct formula for photosynthesis
WARM-UP 1.Using the chemical formulas written on slips of paper
in the envelop at your desk, arrange them into the correct formula
for photosynthesis. What happens to the glucose thats been formed?
2.Now rearrange them into the correct formula for cellular
respiration. What happens to the carbon dioxide thats been
formed?
Slide 3
What happens to matter as organisms use nutrients?
Slide 4
Matter is cycled! Molecules are simply rearranged as they are
made & broken down.
Remember when we said species are interdependent? a.k.a.
Symbiosis Lion & the gazelle Strangler fig & the Oak Flower
& the bee Orchid & the tree
Slide 8
Biotic and Abiotic Factors Are Also Interdependent 1.Living
factors depend on non-living factors as a source of nutrients.
2.Non-living factors depend on living factors to cycle matter.
Slide 9
Organisms Cannot Exist Without Matter All living things are
made of the same matter as non-living things (carbon, hydrogen,
nitrogen, phosphorus, oxygen). Organisms use matter to assemble
& break down essential nutrients for life.
Slide 10
Water Cycle Water exists in the environment as: Surface water
(ponds, lakes, oceans) Run-off Precipitation Vapor
Slide 11
Water Cycle Water enters the biotic world through the action
of: Absorption by plants (roots) Osmosis Drinking (no
slurping!)
Slide 12
Water Cycle Water returns to the environment from the biotic
world by: Evaporation Transpiration (plant stomata) Respiration
(all organisms!)
Slide 13
Slide 14
Carbon Cycle Carbon exists in the environment as: carbon
dioxide (CO 2 ) in the atmosphere and water deposits of coal,
petroleum, and natural gas derived from once-living things dead
organic matter
Slide 15
Carbon Cycle Carbon enters the biotic world through the action
of: Photosynthesis (plants, plant-like) Chemosynthesis (bacteria)
Heterotrophy (food chain) Assimilation (organisms take in nutrient
for building their tissues)
Slide 16
Carbon Cycle Carbon returns to the atmosphere and water from
the biotic world by: Respiration (producing CO 2 ) Burning
(producing CO) Decomposition (producing CO 2 if oxygen is present,
methane (CH 4 ) if it is not)
Slide 17
Slide 18
Nitrogen Cycle Nitrogen exists in the environment as: Nitrogen
gas (N 2 ) in air Nitrates (fertilizers) Ammonia
Slide 19
Nitrogen Cycle Nitrogen enters the biotic world through the
action of: Nitrogen fixation (bacteria convert N 2 to a fixed form)
Eutrophication (too much fertilizer washes with runoff)
Assimilation
Slide 20
Nitrogen Cycle Nitrogen returns to the atmosphere or
environment by: Decomposition (bacteria, fungi) Denitrification
(bacteria) Ammonification (all organisms excrete waste)
Slide 21
Slide 22
Phosphorus Cycle Phosphorus exists in the environment as: A
phosphate ion (PO 4 - ) Salts & rock sediments
Slide 23
Phosphorus Cycle Phosphorus enters the biotic world through the
action of: Absorption (plants) Heterotrophy (food chain)
Assimilation
Slide 24
Phosphorus Cycle Phosphorus returns to the atmosphere or
environment from the biotic world by: Decomposition (bacteria,
fungi)
Slide 25
Slide 26
T.O.T.D. 1.How is water used by organisms? Whats it used for?
2.How is carbon used by organisms? Whats it used for? 3.How is
nitrogen used by organisms? Whats it used for? 4.How is phosphorus
used by organisms? Whats it used for?