Algae

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Oxygen

Sea

Algae Photosynthesis Lab Report Research Question: How would light intensity affect photosynthesis on marine algae N. Oculata? Null Hypothesis: Light intensity will not affect the rate of photosynthesis in marine algae N. Oculata. #1 Alternative Hypothesis: If light intensity increases then the rate of photosynthesis will increase in marine algae N. Oculata. #2 Alternative Hypothesis: If light intensity increases then the rate of photosynthesis will decrease in marine algae N. Oculata. Independent Variable: Light Intensity Experimental Group: (100 watt bulb) (20 cm, 40 cm, 60 cm) Control Group: There is not control group, because there isn?t a part being tested with no light intensity Dependent Variable: The amount of dissolved oxygen Constants:

Rawle Plants

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plants

Green algae

Rhynia

Charophyta

Huaca Prieta

This week?s Bio seminar Friday, Feb. 13, DV2082?at 12pm Jarturo Alvarez-Buylla,?University of California. Embryonic origins of adult neural stem cells 1 Lecture 12: From water to land Ancient plants From water to land but how? Putting life cycles into a phylogenetic context Was water always that important? 2 When did you have popcorn the last time? 3 Corn is ancient Evolved from Teosinte 4 http://hila.webcentre.ca/research/teosinte/ Pop corn is ancient too 5 Huaca Prieta, Peru Grobman, A. & Bonavia, D. 2012. Preceramic maize from Paredones and Huaca Prieta, Peru. Proceedings of the National Academy of Sciences, It all began with green algae 6 http://www.astrobio.net/images/galleryimages_images/Gallery_Image_7263.jpg Green algae 725 mya

Chp 25 Bio

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Plastid

Chapter 25: The Origin and Diversification of Eukaryotes Overview: Shape Changers Because eukaryotes have internal membranes, they can perform a wide variety of tasks that prokaryotes are unable to perform. An example is a Didinium eating a larger Paramecium The cytoskeleton allows the Didinium to change its shape enough to engulf the Paramecium Concept 25.1 Eukaryotes arose by endosymbiosis more than 1.8 billion years ago Endosymbiosis in Eukaryotic Evolution There is now considerable evidence that much protist diversity has its origins in endosymbiosis Endosymbiosis is the process in which a unicellular organism engulfs another cell, which becomes an endosymbiont and then organelle in the host cell Mitochondria evolved by endosymbiosis of an aerobic prokaryote

algaefungi

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Multicellular organism

Volvox

Asexual reproduction

Isogamy

Bio104 Laboratory ? Student?s Guide John Jay College, C.U.N.Y Lab #5 ? Page 1 Lab #5: Green Algae, Fungi, and Lichens I. More Protista a. Continuing from last week, this will lab will explore the Domain of Eukarya. Remember that the group of organisms commonly called ?protists? is not an actual taxon ? it?s a collection of many phyla. b. Some of the protists that we will examine today are the green algae. These single-celled organisms have a common ancestor with plants, and present-day algae share many features with the ancestor of plants. All green algae are technically unicellular organisms, but some form colonies with an impressive degree of organization.

microbio slide

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Unikont

Cyanobacteria

Plasmodium

health

ESTIMATING SIZE OF OBJECTS AND MAKING A WET MOUNT Oscillatoria, 10X Oscillatoria, 20X Oscillatoria, 40X Nucleus A cyanobacterium; prokaryote; photosynthetic; contains chlorophyll and a blue pigment, phycocyanin; long unbranched filaments of cells; no flagella, but can move by means of a sliding motion. Wet Mount. Human cheek cell smear, stained with methylene blue. BACTERIA Cyanobacteria, Nostoc, 40X Cyanobacteria, Gloecapsa, 40X

algeafungi

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Multicellular organism

Volvox

Asexual reproduction

Isogamy

Bio104 Laboratory ? Student?s Guide John Jay College, C.U.N.Y Lab #5 ? Page 1 Lab #5: Green Algae, Fungi, and Lichens I. More Protista a. Continuing from last week, this will lab will explore the Domain of Eukarya. Remember that the group of organisms commonly called ?protists? is not an actual taxon ? it?s a collection of many phyla. b. Some of the protists that we will examine today are the green algae. These single-celled organisms have a common ancestor with plants, and present-day algae share many features with the ancestor of plants. All green algae are technically unicellular organisms, but some form colonies with an impressive degree of organization.

AP Environmental Science - FRQ and MI for Ch.1

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Environmental Science

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water

Aquatic ecology

Biological oceanography

Lawn

Plant

Christian Boujaoude August 17, 2014 AP Environmental Science Pd. 10 Daly FRQ Chapter 1 1. a.) A feasible explanation for the algal bloom in the pond could be that there was too much fertilizer applied to the lawn. Some of the run-off from the rain flowed down the lawn and went into the pond. This would then increase the nutrient supply in the pond and resulted in the algal bloom a few weeks later.

Protist Notes

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Ciliate

Euglena

Disaster

Protist Notes Protists Protists belong to the Kingdom Protista, which includes mostly unicellular organisms that do not fit into the other kingdoms. Characteristics of Protists mostly unicellular, some are multicellular (algae) can be heterotrophic or autotrophic most live in water (though some live in moist soil or even the human body) ALL are eukaryotic (have a nucleus) A protist is any organism that is not a plant, animal or fungus Protista?= the very first Classification of Protists how they obtain nutrition how they move Animallike Protists - also called protozoa (means "first animal") - heterotrophs Plantlike Protists - also called algae - autotrophs Funguslike Protists - heterotrophs, decomposers, external digestion .Animallike Protists: Protozoans

Protista Notes

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Multicellular organism

19.1: Protists The World of Protists What is a Protist? Kingdom Protista contains the most diverse group of organisms of all kingdoms Most are unicellular (diatoms), but some are multicellular (giant kelp). Some are heterotrophs, some are autotrophs and others are both. The characteristic that all protists share is that they are eukaryotes Protists are divided into animal-like protists, funguslike protists and plantlike protists. Protozoa: animal-like protist, all are unicellular Algae: plant-like protists, do not have roots, stems and leaves Unicellular algae produce most of the world?s oxygen and are the basis for aquatic food chains Fungus-like protists are able to move at some point in their life and do not have chitin in their cell walls What is a protozoan?

Origins of Eukaryotic Diversity

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