lecture 2 - Kingdom protista polyphyletic o Does not share...

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Kingdom protista polyphyletic o Does not share one line of common ancestors Protozoa heterotrophs Fungi break down things in environment and absorb nutrition Kingdom Protista Ameobas o Pseudopodia - Extension of cytoplasms that are used for locomotion o Some have shells(test) Radiolarians (Actinopods) o Always have shells Shells made of silica o Main part enclosed in silica Holes in silica allow axopods to extend out which capture food and are ingested o Animal like protitsts Foraminiferans (“little hole bears”) o Shells made of calcium carbonate CaCO 3 Shells form as a series of chambers, similar to a chambered nautilus Looks like microscopic snail o Holes in shell Pseudopodia extend out of holes Flagellates o Locomotion through flagella ( 9+2 microtubules) o Usually one flagella some have multiple o Lifestyles Parasites live in another cell free living o Trypanosome (causes African sleeping sickness) Ciliates o Cilia for locomotion o Paramecium Unicell Complex Multiple differentiated structures Micronucleus Genetic nucleus – preserves the information that is transferred at reproduction Macronucleus Somatic nucleus – genes in macronucleus are ones that are being used to provide information to run the cell Can reproduce asexually (mitosis)
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This note was uploaded on 04/08/2011 for the course BIOLOGY 109:102 taught by Professor Martin during the Spring '11 term at Rutgers.

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lecture 2 - Kingdom protista polyphyletic o Does not share...

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