Early Earth & the Origin of Life

Yellow highlighted sections are due Monday 1/30; the rest is due Tuesday 1/31

EARLY EARTH & THE ORIGIN OF LIFE: Due 1/30

I. History of Life Label 8 events & dates

Describe:  Stromatolites  Oxygen accumulation

II. Origin of Life Describe:  Spontaneous generation  Pasteur  Biogenesis  Miller–Urey experiment  4 stage hypothesis

List the early atmospheric gases

Discuss the following: RNA as the first genetic material, ribozymes, protobionts, early metabolism

Describe the 3 Domains & diagram with a phylogenetic tree

PROKARYOTES & THE ORIGINS OF METABOLIC DIVERSITY: Due 1/30

I. The World of Prokaryotes

II. Structure, Function & Reproduction Describe the 3 bacterial shapes & the prefixes diplo- strepto- staphylo-

Explain the difference between Gram-positive & Gram-negative bacteria & cell wall composition

Define capsule & pili

Motility (3 types)

Define:  nucleoid region  transduction  plasmids  conjugation  specialized membranes  endospores  binary fission  antibiotics  transformation

III. Nutritional & Metabolic Diversity Describe the following 4 categories 1. Photoautotrophs 3. Photoheterotrophs 2. Chemoautotrophs 4. Chemoheterotrophs Define:  Saprobes  Facultative anaerobes  Parasites  Obligate anaerobes  Obligate aerobes

Explain the role of bacteria in the nitrogen cycle Explain the 2 hypotheses for the evolution of photosynthesis

IV Prokaryotic Diversity Due 1/31 Define: 1. Extremophiles 2. Methanogens 3. Extreme halophiles 4. Bactreriorhodopsim 5. Extreme thermophiles

Compare & contrast (A) Bacteria & Archea (B) Archea & Eukarya

V. Ecological Impact

Describe the ecological role of prokaryotes in the following:  Decomposers  Parasitism  Recycling of chemical elements  Disease  Symbiosis  Koch’s postulates  Mutualism  Endotoxins  Commensalism  bioremediaiton

THE ORIGINS OF EUKARYOTIC DIVERSITY

I. Introduction Describe the difficulties with protist classification

Describe how protists are grouped according to:  nutrition  motility  life cycles

II. Origin & Early Diversification Explain the evolution of:  endomembrane system  mitochondria & plastids  eukaryotic cells