Worksheet 2 - Biology PDF

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Worksheet 2: Bacteria and Archaea 12 Sept 2019 6th Edition Section 26.1 26.2 26.3

Pages 519-522 523-525 525-534

Section Why do biologists study bacteria and archaea? How do biologists study bacteria and archaea? What themes occur in the diversification of bacteria and archaea? Key lineages of bacteria and archaea 

26.4 534-536  Explore the following interactive presentation: http://media.hhmi.org/biointeractive/click/deeptime/ View all media under the following sections: Introduction Chemical Evidence for Life Visible Evidence for Life Great Oxygenation Event  Vocabulary Peptidoglycan Cyanobacteria Firmicutes Proteobacteria Spirochaetes Actinobacteria Chlamydiae Thaumarchaeota Crenarchaeota Euryarchaeota nitrogen fixation  anaerobic respiration Methanotrophs Oxygenic/anoxygenic photosynthesis Chemoorangotrophs Chemolithotrophs Gram-positive/Gram-negative   Questions 1. What are common morphological characteristics of bacteria? What are other distinguishing characteristics and how can they be used to differentiate bacteria from one another?  2. Lateral gene transfer is the movement of genes from an individual to another without one being a parent. Why is this important?   3. Was the proposed common ancestor of all species living today prokaryotic or eukaryotic? Why?  4. Describe the different modes of acquiring food/energy and how they are distributed in the tree of life.  5. Describe the relationship between prokaryotes and eukaryotes.   

5th Edition Section 29.1 528-533 29.2 533-535 29.3 536-543 archaea? 29.4 544-549 

Pages Section Why do biologists study bacteria and archaea? How do biologists study bacteria and archaea? What themes occur in the diversification of bacteria and Key lineages of bacteria and archaea

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