Do Now: Do Now:

1.Why is photosynthesis important to the intertidal zone?

• http://www.youtube.com/watch?http://www.youtube.com/watch?v=8SgnnV8nV9gv=8SgnnV8nV9g

• 3.5 till 3.5 till http://www.youtube.com/watch?http://www.youtube.com/watch?v=7hUNBhRiKCIv=7hUNBhRiKCI

• Origin of UNIVERSE: Big Bang Theory:

• Origin of EARTH (4.5 Billion Years Ago) ACCRETION of Dust/Debris into suns, planets, moons etc. 

http://www.youtube.com/watch?v=zDQzKTedGNE

•Origin of OCEAN: Water in Volcanic Gases spewing out – When Earth was cool enough, it began to accumulate into 5 interconnected BASINS on earth’s crust (Pacific, Atlantic, Indian, Arctic, Southern)

• Name OCEAN – Means “Big River”

•Origin of ATMOSPHERE: Fossil Evidence of CYANOBACTERIA 3.5bya “Black Scum” on rocks, even at shoreline today. – Photosynthetic bacteria – Generated oxygen that is in our

atmosphere today

850 mya

 stromatolite, produced by the activity of ancient cyanobacteria

Photosynthesis: process of Photosynthesis: process of making food making food

• Sunlight + 6 COSunlight + 6 CO22 + 6 H + 6 H22O O C C66HH1212OO66 (sugar) + 6 O(sugar) + 6 O22

• http://www.youtube.com/watch?http://www.youtube.com/watch?v=pE82qtKSSH4v=pE82qtKSSH4

Cellular respiration Cellular respiration

•“Burning” of food to release sun’s energy trapped in it.

• CC66HH1212OO66 (sugar) + 6 O (sugar) + 6 O22 6 CO 6 CO22 + 6 H + 6 H22O + Energy.O + Energy.

AlgaeAlgae

Kingdom Protista Kingdom Protista

• mostly unicellular organisms that do not fit mostly unicellular organisms that do not fit into the other kingdoms.into the other kingdoms.

• Characteristics of ProtistsCharacteristics of Protists– mostly unicellular, some are mostly unicellular, some are multicellular (algae)multicellular (algae)– can be heterotrophic or autotrophic (may or may can be heterotrophic or autotrophic (may or may

not use sunlight to produce food)not use sunlight to produce food)– most live in water (though some live in moist most live in water (though some live in moist

soil or even the human body)soil or even the human body)– ALL are eukaryotic (ALL are eukaryotic (have a nucleushave a nucleus))

• A protist is any organism that is not a A protist is any organism that is not a plant, animal or fungusplant, animal or fungus

5. What happens during 5. What happens during photosynthesis?photosynthesis?

Diversity of AlgaeDiversity of Algae

• Millions of algae species but weMillions of algae species but we’’ll ll focus on thesefocus on these– DiatomsDiatoms– Dinoflagallates Dinoflagallates – Red AlgaeRed Algae– Kelp or brown algaeKelp or brown algae– Green algaeGreen algae

zooflagellateszooflagellates

Brown AlgaeBrown Algae• 1500 species1500 species of of

Brown algaeBrown algae

• Mostly marine and Mostly marine and include seaweed and include seaweed and kelpkelp

• All are multicellular All are multicellular and large and large

• Used in cosmetics, Used in cosmetics, pudding, toothpaste, pudding, toothpaste, ice creamsice creams

Reg AlgaeReg Algae

• 4000 species4000 species of of RED AlgaeRED Algae

• Most are marineMost are marine

• Smaller than brown algaeSmaller than brown algae and are and are often found at a depth of 200 often found at a depth of 200 meters.meters.

• used in cosmetics, gelatin capsules used in cosmetics, gelatin capsules and some cheesesand some cheeses

Green algaeGreen algae• 7000 diverse species7000 diverse species

• Biologist reason that green algae Biologist reason that green algae give rise to land plants.give rise to land plants.

DinoflagellatesDinoflagellates• Unicellular/flagella to help them move Unicellular/flagella to help them move

through the water.through the water.

• They are the They are the cause of Red Tidecause of Red Tide, when , when there is an outburst in population and in there is an outburst in population and in turn water becomes red/brown in color.turn water becomes red/brown in color.

• can produce toxins. Which cause memory can produce toxins. Which cause memory loss and other impaired brain functions in loss and other impaired brain functions in humanshumans

• One dinoflagellate that has gotten One dinoflagellate that has gotten out of control is out of control is Pfiesteria.  Pfiesteria.  PfiesteriaPfiesteria grows in fertilizer and raw  grows in fertilizer and raw sewage. It has killed a billion fish sewage. It has killed a billion fish along the costs of North Carolina, along the costs of North Carolina, Maryland, and Virginia since 1991.Maryland, and Virginia since 1991.

DiatomsDiatoms• group of algae group of algae

• secrete glass shells they make from secrete glass shells they make from dissolved silica in water. dissolved silica in water.

• Approx. 100,000 species. Approx. 100,000 species.