Lecture 10 Outline Chapter 28

Lecture 10 Outline Chapter 28 - Crampton Bio II Fall 2009...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Crampton Bio II Fall 2009 1 Lecture 10: THE PROTISTS Slide 1: Eukaryotes: membranous nucleus membrane bound organelles e.g. mitochondria e.g. chloroplasts e.g. golgi apparatus ... more complex cellular structure Slide 2: Protist is a convenient term that means “eukaryote that isn’t a fungus, animal or plant (it is a paraphyletic group) Protists are not monophyletic! Slide 3: An introduction to protists Usually unicellular (or form small multi-cellular colonies) Nutritionally diverse Mostly occur in water Sexual and asexual reproduction Possess specialized organelles Highly diverse Slide 4: 1. Photoautotrophs (photoautotrophs): Plant-like Alga/e Have chloroplasts (a class of PLASTID). Plastids are major organelles found in algae and plants 2. Ingestive (heterotrophs food particles): Animal-like Protozoa 3. Absorbtive (heterotrophs organic molecules): Fungus-like Oomycetes + others 4. Photosynthetic / Heterotrophic (Mixotrophic) Animal/Plant like
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Crampton Bio II Fall 2009 2 e.g. Euglena Euglena can switch to heterotrophy in absence of light Slide 5: REVISION: From Prokaryote to Eukaryote The Endosymbiotic Model Small prokaryotes enter host or engulfed prey or parasites Host gain a selective advantage (e.g. energy from mitochondrial ancestors) Host and endosymbionts become single organism Mitochondria: All eukaryotes have mitochondria (or their recent ancestors had them). Mitochondrial DNA very similar to DNA of some bacteria Slide 6: Slide 7:
Background image of page 2
Crampton Bio II Fall 2009 3 Early branching order not yet resolved. Possibly no single ‘root’ – i.e. multiple origins from different bacterial groups Phylogeny recently been substantially improved based on congruent data from various sources. Your textbook (8 th edition) covers these updates. Remember phylogenies are UCF! Slide 8:
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/08/2011 for the course BSC 2011C taught by Professor Klowden/crampton during the Fall '11 term at University of Central Florida.

Page1 / 10

Lecture 10 Outline Chapter 28 - Crampton Bio II Fall 2009...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online