Protist

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Amoeboids

Slime mold

Foraminifera

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 11: Protists Why are they important? Who are they? What can they - or at least some of them - do? 2 3 They say ? 4 They say ? 5 But really, these guys did it! 6 Foraminifera They even make landscapes 7 8 Protists form the basis of aquatic food chains 9 But then, what are protists? 10 What are they? 11 12 This is an example of a life cycle with alternation of generation 13 The Unikonta are a strange group 14 Cellular slime mould can be solitary or ?social? 15 Maybe they could help Toronto! 16

Rawle Phylogeny I

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Phylogenetics

Phylogenetic tree

Prokaryote

This week?s Bio seminar DV2082, 12:00 Altaf Arain, McMaster University Global warming implications for forest ecosystems in North America.? 1 Next week in BIO153 Lecture 5: Phylogeny II Lecture 6: Phylogeny III Tutorial 3: Searching databases Readings: Ch 26 Lab 2: Prokaryotes and protists 2 Lecture 4: Phylogeny I Why trees? Why trees imply evolution Identify the parts of a tree Reading a tree correctly 3 We have an effective nomenclature 4 Trees are an effective way to think about descent from common ancestry 5 Lamarck Darwin ht tp s: // pa tri ce ay m e. file s. w or dp re ss .c om /2 01 4/ 11 /la m ar ck _t re e. jp g Think of a family tree 6 Trees can reflect taxonomy 7 We can identify parts of the tree 8

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

Protista and Fungi Notes

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Spore

Fungus

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?

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?

Protist Resume Sample

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Eukaryotes

Cell Biology

INSTRUCTIONS: When submitting your protist resume, just insert your response in the areas where the text is blue. Please contact me if you are confused with creating your protist resume. (Scientific name of protist) (Phylum of your protist) (Common ecosystem of your protist) Objective (describe what your protist does and where your protist normally performs this function) Background (Characteristics) (describe the shape of your protist) (how does your protist move) (how does your protist obtain food) Work Experience (3 Contributions your protist provides to the environment or to other organisms) (contribution #1) (contribution #2) (contribution #3) References (identify 3 organisms that belong in the same phylum as your protist) (organism #1 ? where can they be found?)

Origins of Eukaryotic Diversity

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Eukaryotic Diversity Campbell AP Biology

Overview: AWorld in a Drop of Water ? In the past, taxonomists classified all protists in a single kingdom, Protista. ? However, it is now clear that Protista is in fact paraphyletic. ? Some protists are more closely related to plants, fungi, or animals than they are to other protists. ? As a result, the kingdom Protista has been abandoned. ? Various lineages are recognized as kingdoms in their own right. ? Scientists still use the convenient term protist informally to refer to eukaryotes that are not plants, animals, or fungi. Concept 28.1 Protists are an extremely diverse assortment of eukaryotes ? Protists exhibit more structural and functional diversity than any other group of organisms.

Campbell Biology Chapter 28

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Multicellular organism

Chapter 28- Protists Overview: Living Small Protist- the informal name of the group of mostly unicellular eukaryotes Protists constitute a polyphyletic group, and Protista is no longer valid as a kingdom caused by systematics. Molecular data shows there is genetic diversity. Concept 28.1: Most eukaryotes are single celled organisms Protists are eukaryotes most are unicellular, but there are some colonial and multicellular species Protists are the most diverse of the eukaryotes Single celled protists can be very complex, as all biological functions are carried out by organelles in each individual cell don?t see the division of labor like in multicellular eukaryotes, every single cell has all the organelles a protist needs to survive

Viruses, Prokaryotes, Protists, and Fungus Study Guide

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Virus

cell