Chapter 27~Prokaryotes and the Origins of Metabolic Diversity.

Slides:

Advertisements

Similar presentations

Prokaryotes A Quick Tour. Bacteria Video  Bacteria Video Bacteria Video Bacteria Video.

Advertisements

Prokaryotic diversity Eubacteria & Archaebacteria Campbell & Reese Fig 26.1.

Chapter 27 Bacteria & Archaea

Chapter 27 Bacteria & Archaea.

BACTERIA AND ARCHAEA.

+ Bacteria and Archaea. + Cell surface markers of prokaryotes Most bacteria contain peptidoglycan in their cell walls, which is a polymer of modified.

1 2 Bacterial Classification 3 Characteristics of Bacteria.

PROKARYOTES. THEY ARE EVERYWHERE The Major Similarities Between the Two Types of Cells (Prokaryote and eukaryote) Are: They both have DNA as their genetic.

Chapter 18.  Domain Archaea  Only one kingdom: Archaebacteria ▪ Cells contain cell walls ▪ Live in extreme environments (hot, acidic, salty, no O 2.

18.1 Bacteria Objectives: 8(C) Compare characteristics of taxonomic groups, including archaea, bacteria, protists, fungi, plants, and animals. 11(C) Summarize.

Chapter 27: The Prokaryotes Objectives 1.Learn about the prokaryotic adaptations that make them successful, including the diverse metabolic pathways. 2.Learn.

Chapter 23.  Cellular organisms  In one of two domains: Archaea and Eubacteria  Generally smaller than eukaryotes  Most are unicellular, some form.

Prokaryotes By Aram Gebretensae and Quddus Akinlusi.

Identifying and Classifying Bacteria Ch. 23. What is a prokaryote? Cells that lack a true nucleus. Cells that lack a true nucleus. Cells that lack membrane-

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings Bacteria Staphylococcus bacteria in nose.

Prokaryotes Chapter 27. Found wherever there is life; thrive in habitats that are too cold, too hot, too salty, etc. Most live in symbiotic relationships.

Prokaryotes Prokaryotes are microscopic single-celled organisms. Although you cannot see them without the aid of a microscope, their combined biomass is.

Bacteria and Archaea. Prokaryotes Structure, Function, and Reproduction Nutritional and Metabolic Diversity Phylogeny of Prokaryotes Ecological Impact.

Chapter 27 Prokaryotes! Wow!. Some Interesting Info… *The biomass of all the prokaryotes of the world is 10 times that of eukaryotes! *The # of prokaryotes.

Viruses and Bacteria. Viral structure –DNA or RNA genome –Capsid Protein coat.

Chapter 27: Prokaryotes 1.Where can you find prokaryotes? -EVERYWHERE!! -Domain Bacteria & Archae 2.What do you know about bacterial structure, function.

Prokaryotes And The Origins of Metabolic Diversity Kingdom Monera.

Chapter 27 l Prokaryotes and the Origins of Metabolic Diversity.

Viruses and Bacteria. Viruses are made of two parts – A protein coat called a capsid – Genetic material, can be DNA or RNA Viruses that infect bacteria.

BACTERIA Unicellular Organisms Prokaryotes (no true nucleus)

AP Biology Ch. 27 PROKARYOTES. Bacteria on the head of a pin—they are found everywhere!

Bacteria and Viruses Chapter 19. Introduction Microscopic life covers nearly every square centimeter of Earth.  In a single drop of pond water you would.

Staphylococcus bacteria in nose

Topic 9 The Ecology of Prokaryotes Biology 1001 October 19, 2005.

Green sea turtle Olive Ridley sea turtle Say AH!

WARM UP Wednesday, March 20, 2013 Which process creates a protein (RNA to protein)?

Copyright © 2005 Brooks/Cole — Thomson Learning Biology, Seventh Edition Solomon Berg Martin Chapter 23 Viruses and Prokaryotes.

Ch.26/27. I. History of life A. Earth formed about 4.5 billion years ago B. Life began a few 1,000,000 years later 1. Metabolic activity found in 3.5.

Chapter 27 - Prokaryotes. Structural features: Chapter 27 - Prokaryotes Structural features: Nearly all have a cell wall.

Chapter 27~ Prokaryotes and the Origins of Metabolic Diversity.

AP Biology Prokaryotes Domain Bacteria Domain Archaea Domain Eukarya Common ancestor.

Bacteria. Kingdom Archaebacteria Prokaryotes Single celled Cell Wall (does not have peptidoglycan) Live in harsh environments 3 major groups 1) methanogens.

Bacteria Guided Reading Wicked Awesome PowerPoint Presentation.

Chapter 27 l Prokaryotes and the Origins of Metabolic Diversity.

Bacteria Structure, Reproduction and Recombination NICK TAMARO, CONNOR KEEFER, ALEXA MARQUIS, SLADE PFENDNER.

The world of prokaryotes A- They’re everywhere 1- Collective prokaryote biomass outweighs all eukaryotes combined by at least tenfold. 2. They exist almost.

CHAPTER 27 Bacteria and Archaea. YOU MUST KNOW The key ways in which prokaryotes differ from eukaryotes with respect to:  Genome;  Membrane bound organelles;

Prokaryotes: BACTERIA small, lack membrane bound organelles must have cell walls simpler genomes most numerous organisms important as decomposers small.

Prokaryotes Structure Function Reproduction Diversity Ecological Impact.

Prokaryotes: Bacteria. Bacteria Found on almost every square cm of Earth Bacteria = prokaryotes –Remember: no nucleus and no membrane bound organelles.

Bacteria and Archaea and Protists Chapter 27 Sections Chapter 28 Sections 28.1 and 28.7.

Copyright Pearson Prentice Hall

Prokaryotes and the Origins of Metabolic Diversity

Prokaryotes Ms. Cole.

Bellringer What is the difference between a bacteria and a virus?

Three Domains of Living Things

Copyright Pearson Prentice Hall

Domain Bacteria Domain Archaebacteria

Chapter 20 Section 1 Bacteria

Bacteria and Archaea.

Diversity of Living Things

Topic 2.2 Prokaryotes By Laura Sugden.

Prokaryote and Metabolism

Lecture #12 Date ________

Classification + Diversity of Life

Chapter 27 Bacteria and Archaea.

PROKARYOTES AND THE ORIGINS OF METABOLIC DIVERSITY

Chapter 27 Key Points Prokaryotes.

Bacteria & Viruses Chapter 19.

Prokaryotes and the Origins of Metabolic Diversity

Bacterial Classification

Chapter 27~ Prokaryotes and the Origins of Metabolic Diversity

Prokaryotes the oldest bugs on planet earth.

Chapter 27: Prokaryotes Where can you find prokaryotes? EVERYWHERE!!

Presentation transcript:

Chapter 27~Prokaryotes and the Origins of Metabolic Diversity

Classification l Kingdom: Monera? l Domain: Bacteria l Domain: Archaea l Shape cocci (sphere) bacilli (rod) helical (spiral)

Structural characteristics l Cell wall~ peptidoglycan (sugars & proteins); √ Gram +: w/peptidoglycan penicillin action √ Gram -: little peptidoglycan, lipopolysaccharides; most pathogens; impede drug action l Capsule: adherence; protection l Pili: adherence; conjugation

Motility l 1- Flagella l 2- Helical shape (spirochetes) l 4-Taxis (movement away or toward a stimulus)

Form & Function l Nucleoid region (genophore: non- eukaryotic chromosome) l Plasmids l Asexual reproduction: binary fission (not mitosis)

l “Sexual” reproduction (not meiosis): l transformation~ uptake of genes from surrounding environment conjugation~ direct gene transfer from 1 prokaryote to another transduction~ gene transfer by viruses l Endospore: resistant cells for harsh conditions (250 million years!)

Nutrition & Metabolism l Photoautotrophs: photosynthetic; harness light to drive the synthesis of organics (cyanobacteria) l Chemoautotrophs: oxidation of inorganics for energy; get carbon from CO2 l Photoheterotrophs: use light to generate ATP but get carbon in an organic form

l Chemoheterotrophs: consume organic molecules for both energy and carbon saprobes- dead organic matter decomposers parasites- absorb nutrients from living hosts l Nitrogen fixation: conversion of atmospheric nitrogen (N2) to ammonium (NH4+) l Oxygen relationships: obligate aerobes; facultative anaerobes; obligate anaerobes

Prokaryotic ecology l Decomposers: unlock organics from corpses and waste products l Symbiosis~ symbiont/host mutualism (+, +) parasitism (+, -) commensalism (+, 0) l Disease opportunistic: normal residents of host; cause illness when defenses are weakened Koch’s postulates: criteria for bacterial disease confirmation exotoxins: bacterial proteins that can produce disease w/o the prokaryote present (botulism) endotoxins: components of gram - membranes (Salmonella)