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United States (324,192)
BS 182H (46)
Dr.Getty (46)
Lecture

Eukaryotes & Protists Slide Answers

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Department
Biological Science
Course
BS 182H
Professor
Dr.Getty
Semester
Fall

Description
Overview of Lecture Eukaryotes Protists Read Text ch 28 review ch 6 Bullet Points eukaryotesproperties of eukaryotic cells endosymbiont theory of originsprotists a paraphyletic junk drawer a superficial survey of protist diversitycellular slime moldsgenetic conflictcooperationFYIa NewsViews example The lecturer dothprotist too much methinksHamlet Act 3 scene 2 An added dimension Dev Cell 12 349361 2007 J HG EMBL This highresolution threedimensional image of a eukaryotic cell shows the nucleus coloured brown and vacuoles and vesicles gold Also seen are microtubules green which form the cells cytoskeletonand mitochondria bluestrung along the microtubule bundles Important features likely present in the common ancestor of eukaryotesshared derived homologous traitsSome of these features have been lostin some lineages mitochondria Cytoskeleton consisting oftubulinbased microtubules and actinbased microfilamentsMotile cell extensions called flagella or cilia that contain9 peripheral microtubular doublets and 2 central microtubules An endomembrane system that consists of endoplasmic reticulum Golgi bodiesvacuoles lysosomes peroxisomes and the nuclear envelope Primary genome of each cell consisting of multiple linear chromosomescontained within a membranebound nucleus the eukaryote Following replication the chromosomes are segregated by mitosisMitochondriaorganelles with diverse functions usually includingaerobic respiration and synthesis and breakdown of lipids amino acids etc Mitochondria are bounded by two membranes and usually contain a small genome They are the descendents of an alphaproteobacterial endosymbiont Translation machinery in the form of 80S ribosomes prokaryotes have 70s each consisting of four molecules of RNA complexed with many proteinsand partitioned in a small 40S and a large 60S subunit text sec 174
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