Kingdoms Dichotomous Keys Diversity Resilience Homework Review pp
- Slides: 44
Kingdoms, Dichotomous Keys, Diversity, & Resilience
Homework Review pp. 8 -23 in your textbook and answer 1. 1 even questions 1. 2, questions 1, 3, 5 Define: unicellular & multicellular prokaryotic & eukaryotic autotrophic & heterotrophic sexual & asexual Species Concepts?
Definitions Unicellular: single-celled Multicellular: more than one cell Prokaryote: smaller, simpler type of cell without a membrane-bound nucleus Eukaryote: larger, more complex type of cell with a membrane-bound nucleus Autotroph: obtains energy by making its own food (sunlight) Heterotroph: consumes other organisms to obtain energy and nutrients Sexual reproduction: requires the genetic material from two parents to form offspring with a unique combination of genes (unique to the Domain, Eukarya) Asexual reproduction: offspring arise from a single parent, and inherit the genes of that parent only. The offspring will be exact genetic copies of the parent (eg. in Eukarya include some reptiles, insects, and fish).
Eukaryotic cells • Us! • Membranebound nucleus • much larger and more complex than prokaryotic cells Examples? Organisms we can see
Prokaryotic cells • Do not have a nucleus. Genetic material is found in the cytoplasm • Smaller, and less complex than eukaryotic cells • There at least 20 times more prokaryotic cells on Earth than there are eukaryotic cells
Features common to all cells
D O M A I N S K I N G D O M S
Kingdoms (refer to text p. 29, table 1. 5)
DKPCOFGS: We need a mnemonic! Domain Kingdom Phylum Class Order Family Genus Species
Dichotomous Keys An identification solution that uses many 2 -part choices to narrow down the solution We did this! With our shoes! (eg. leather and not leather) Another activity… meet the Norns! …for more practice and information, look at text pp. 40 -1
Criteria depends on Taxonomic rank (refer to p. 29, Table 1. 5 vs p. 30, #9) If we’re interested in the Kingdom what types of criteria are we looking at? If we’re interested in the Species rank, what types of criteria are we looking at?
How to Make a Dichotomous Key From a Table of Bacterial Characteristics (for use in running the minimum number of tests in identifying an unknown bacterium) ericstavney. net/ppts/a 10 d%20 Dicho. Key. Example. ppt
Table of Characteristics for Eight Bacteria Organism Characteristics Alcaligenes faecalis Gram negative bacillus, acid-fast negative, ferments galactose, catalase positive, motile, alkaline with litmus milk, not hemolytic, H 2 S negative Citrobacter freundii Gram negative bacillus; acid-fast negative, does not ferment galactose, catalase positive, non-motile, acid produced in litmus milk, not hemolytic, H 2 S negative Pseudomonas fluorescens Gram negative bacillus, acid-fast negative, does not ferment galactose, catalase positive, non-motile, alkaline in litmus milk, hemolytic, H 2 S negative Streptococcus pneumoniae Gram positive oval coccus found as streptococci, acid-fast negative, galactose fermentation negative, catalase negative, non-motile, acid in litmus milk, hemolytic, H 2 S negative Mycobacterium smegmatis Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-negative, , non-motile, alkaline in litmus milk, catalase positive, not hemolytic, H 2 S negative Mycobacterium leprae Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-positive, non-motile, alkaline in litmus milk not hemolytic, H 2 S negative Corynebacterium xerosis Gram positive club-shaped bacilli, acid-fast negative, galactose fermentation positive, non-motile, acid from litmus milk, catalase positive, not hemolytic, H 2 S negative Aeromonas hydrophila Gram negative bacilli, acid-fast negative, ferments galactose, catalase positive, motile, acid from litmus milk, not hemolytic, H 2 S positive
Dichotomous Key to Identifying Eight Bacteria Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Streptococcus pneumoniae Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Aeromonas hydrophila
Table of Characteristics for Eight Bacteria Organism Characteristics Alcaligenes faecalis Gram negative bacillus, acid-fast negative, ferments galactose, catalase positive, motile, alkaline with litmus milk, not hemolytic, H 2 S negative Citrobacter freundii Gram negative bacillus; acid-fast negative, does not ferment galactose, catalase positive, non-motile, acid produced in litmus milk, not hemolytic, H 2 S negative Pseudomonas fluorescens Gram negative bacillus, acid-fast negative, does not ferment galactose, catalase positive, non-motile, alkaline in litmus milk, hemolytic, H 2 S negative Streptococcus pneumoniae Gram positive oval coccus found as streptococci, acid-fast negative, galactose fermentation negative, catalase negative, non-motile, acid in litmus milk, hemolytic, H 2 S negative Mycobacterium smegmatis Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-negative, , non-motile, alkaline in litmus milk, catalase positive, not hemolytic, H 2 S negative Mycobacterium leprae Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-positive, non-motile, alkaline in litmus milk not hemolytic, H 2 S negative Corynebacterium xerosis Gram positive club-shaped bacilli, acid-fast negative, galactose fermentation positive, non-motile, acid from litmus milk, catalase positive, not hemolytic, H 2 S negative Aeromonas hydrophila Gram negative bacilli, acid-fast negative, ferments galactose, catalase positive, motile, acid from litmus milk, not hemolytic, H 2 S positive
Table of Characteristics for Eight Bacteria Organism Characteristics Alcaligenes faecalis Gram negative bacillus, acid-fast negative, ferments galactose, catalase positive, motile, alkaline with litmus milk, not hemolytic, H 2 S negative Citrobacter freundii Gram negative bacillus; acid-fast negative, does not ferment galactose, catalase positive, non-motile, acid produced in litmus milk, not hemolytic, H 2 S negative Pseudomonas fluorescens Gram negative bacillus, acid-fast negative, does not ferment galactose, catalase positive, non-motile, alkaline in litmus milk, hemolytic, H 2 S negative Streptococcus pneumoniae Gram positive oval coccus found as streptococci, acid-fast negative, galactose fermentation negative, catalase negative, non-motile, acid in litmus milk, hemolytic, H 2 S negative Mycobacterium smegmatis Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-negative, , non-motile, alkaline in litmus milk, catalase positive, not hemolytic, H 2 S negative Mycobacterium leprae Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-positive, non-motile, alkaline in litmus milk not hemolytic, H 2 S negative Corynebacterium xerosis Gram positive club-shaped bacilli, acid-fast negative, galactose fermentation positive, non-motile, acid from litmus milk, catalase positive, not hemolytic, H 2 S negative Aeromonas hydrophila Gram negative bacilli, acid-fast negative, ferments galactose, catalase positive, motile, acid from litmus milk, not hemolytic, H 2 S positive
Dichotomous Key to Identifying Eight Bacteria Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Streptococcus pneumoniae Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Aeromonas hydrophila Gram stain negative Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Aeromonas hydrophila positive Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Streptococcus pneumoniae
Table of Characteristics for Eight Bacteria Organism Characteristics Alcaligenes faecalis Gram negative bacillus, acid-fast negative, ferments galactose, catalase positive, motile, alkaline with litmus milk, not hemolytic, H 2 S negative Citrobacter freundii Gram negative bacillus; acid-fast negative, does not ferment galactose, catalase positive, non-motile, acid produced in litmus milk, not hemolytic, H 2 S negative Pseudomonas fluorescens Gram negative bacillus, acid-fast negative, does not ferment galactose, catalase positive, non-motile, alkaline in litmus milk, hemolytic, H 2 S negative Streptococcus pneumoniae Gram positive oval coccus found as streptococci, acid-fast negative, galactose fermentation negative, catalase negative, non-motile, acid in litmus milk, hemolytic, H 2 S negative Mycobacterium smegmatis Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-negative, , non-motile, alkaline in litmus milk, catalase positive, not hemolytic, H 2 S negative Mycobacterium leprae Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-positive, non-motile, alkaline in litmus milk not hemolytic, H 2 S negative Corynebacterium xerosis Gram positive club-shaped bacilli, acid-fast negative, galactose fermentation positive, non-motile, acid from litmus milk, catalase positive, not hemolytic, H 2 S negative Aeromonas hydrophila Gram negative bacilli, acid-fast negative, ferments galactose, catalase positive, motile, acid from litmus milk, not hemolytic, H 2 S positive
Dichotomous Key to Identifying Eight Bacteria Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Streptococcus pneumoniae Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Aeromonas hydrophila Gram stain negative Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Aeromonas hydrophila Galactose fermentation positive Alcaligenes faecalis Aeromonas hydrophila negative Citrobacter freundii Pseudomonas fluorescens positive Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Streptococcus pneumoniae
Table of Characteristics for Eight Bacteria Organism Characteristics Alcaligenes faecalis Gram negative bacillus, acid-fast negative, ferments galactose, catalase positive, motile, alkaline with litmus milk, not hemolytic, H 2 S negative Citrobacter freundii Gram negative bacillus; acid-fast negative, does not ferment galactose, catalase positive, non-motile, acid produced in litmus milk, not hemolytic, H 2 S negative Pseudomonas fluorescens Gram negative bacillus, acid-fast negative, does not ferment galactose, catalase positive, non-motile, alkaline in litmus milk, hemolytic, H 2 S negative Streptococcus pneumoniae Gram positive oval coccus found as streptococci, acid-fast negative, galactose fermentation negative, catalase negative, non-motile, acid in litmus milk, hemolytic, H 2 S negative Mycobacterium smegmatis Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-negative, , non-motile, alkaline in litmus milk, catalase positive, not hemolytic, H 2 S negative Mycobacterium leprae Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-positive, non-motile, alkaline in litmus milk not hemolytic, H 2 S negative Corynebacterium xerosis Gram positive club-shaped bacilli, acid-fast negative, galactose fermentation positive, non-motile, acid from litmus milk, catalase positive, not hemolytic, H 2 S negative Aeromonas hydrophila Gram negative bacilli, acid-fast negative, ferments galactose, catalase positive, motile, acid from litmus milk, not hemolytic, H 2 S positive
Dichotomous Key to Identifying Eight Bacteria Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Streptococcus pneumoniae Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Aeromonas hydrophila Gram stain negative Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Aeromonas hydrophila Galactose fermentation positive Alcaligenes faecalis Aeromonas hydrophila H 2 S production positive negative Aeromonas hydrophila Alcaligenes faecalis negative Citrobacter freundii Pseudomonas fluorescens positive Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Streptococcus pneumoniae
Table of Characteristics for Eight Bacteria Organism Characteristics Alcaligenes faecalis Gram negative bacillus, acid-fast negative, ferments galactose, catalase positive, motile, alkaline with litmus milk, not hemolytic, H 2 S negative Citrobacter freundii Gram negative bacillus; acid-fast negative, does not ferment galactose, catalase positive, non-motile, acid produced in litmus milk, not hemolytic, H 2 S negative Pseudomonas fluorescens Gram negative bacillus, acid-fast negative, does not ferment galactose, catalase positive, non-motile, alkaline in litmus milk, hemolytic, H 2 S negative Streptococcus pneumoniae Gram positive oval coccus found as streptococci, acid-fast negative, galactose fermentation negative, catalase negative, non-motile, acid in litmus milk, hemolytic, H 2 S negative Mycobacterium smegmatis Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-negative, , non-motile, alkaline in litmus milk, catalase positive, not hemolytic, H 2 S negative Mycobacterium leprae Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-positive, non-motile, alkaline in litmus milk not hemolytic, H 2 S negative Corynebacterium xerosis Gram positive club-shaped bacilli, acid-fast negative, galactose fermentation positive, non-motile, acid from litmus milk, catalase positive, not hemolytic, H 2 S negative Aeromonas hydrophila Gram negative bacilli, acid-fast negative, ferments galactose, catalase positive, motile, acid from litmus milk, not hemolytic, H 2 S positive
Dichotomous Key to Identifying Eight Bacteria Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Streptococcus pneumoniae Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Aeromonas hydrophila Gram stain negative positive Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Aeromonas hydrophila Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Streptococcus pneumoniae Galactose fermentation positive Alcaligenes faecalis Aeromonas hydrophila negative Citrobacter freundii Pseudomonas fluorescens H 2 S production positive Aeromonas hydrophila negative Litmus milk acid Alcaligenes Citrobacter faecalis freundii alkaline Pseudomonas fluorescens
Table of Characteristics for Eight Bacteria Organism Characteristics Alcaligenes faecalis Gram negative bacillus, acid-fast negative, ferments galactose, catalase positive, motile, alkaline with litmus milk, not hemolytic, H 2 S negative Citrobacter freundii Gram negative bacillus; acid-fast negative, does not ferment galactose, catalase positive, non-motile, acid produced in litmus milk, not hemolytic, H 2 S negative Pseudomonas fluorescens Gram negative bacillus, acid-fast negative, does not ferment galactose, catalase positive, non-motile, alkaline in litmus milk, hemolytic, H 2 S negative Streptococcus pneumoniae Gram positive oval coccus found as streptococci, acid-fast negative, galactose fermentation negative, catalase negative, non-motile, acid in litmus milk, hemolytic, H 2 S negative Mycobacterium smegmatis Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-negative, , non-motile, alkaline in litmus milk, catalase positive, not hemolytic, H 2 S negative Mycobacterium leprae Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-positive, non-motile, alkaline in litmus milk not hemolytic, H 2 S negative Corynebacterium xerosis Gram positive club-shaped bacilli, acid-fast negative, galactose fermentation positive, non-motile, acid from litmus milk, catalase positive, not hemolytic, H 2 S negative Aeromonas hydrophila Gram negative bacilli, acid-fast negative, ferments galactose, catalase positive, motile, acid from litmus milk, not hemolytic, H 2 S positive
Dichotomous Key to Identifying Eight Bacteria Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Streptococcus pneumoniae Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Aeromonas hydrophila Gram stain negative positive Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Aeromonas hydrophila Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Streptococcus pneumoniae Acid-fast staining Galactose fermentation positive Alcaligenes faecalis Aeromonas hydrophila Citrobacter freundii Pseudomonas fluorescens H 2 S production positive Aeromonas hydrophila negative acid fast negative Litmus milk acid Alcaligenes Citrobacter faecalis freundii alkaline Pseudomonas fluorescens not acid fast Mycobacterium smegmatis Corynebacterium xerosis Mycobacterium leprae Streptococcus pneumoniae
Table of Characteristics for Eight Bacteria Organism Characteristics Alcaligenes faecalis Gram negative bacillus, acid-fast negative, ferments galactose, catalase positive, motile, alkaline with litmus milk, not hemolytic, H 2 S negative Citrobacter freundii Gram negative bacillus; acid-fast negative, does not ferment galactose, catalase positive, non-motile, acid produced in litmus milk, not hemolytic, H 2 S negative Pseudomonas fluorescens Gram negative bacillus, acid-fast negative, does not ferment galactose, catalase positive, non-motile, alkaline in litmus milk, hemolytic, H 2 S negative Streptococcus pneumoniae Gram positive oval coccus found as streptococci, acid-fast negative, galactose fermentation negative, catalase negative, non-motile, acid in litmus milk, hemolytic, H 2 S negative Mycobacterium smegmatis Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-negative, , non-motile, alkaline in litmus milk, catalase positive, not hemolytic, H 2 S negative Mycobacterium leprae Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-positive, non-motile, alkaline in litmus milk not hemolytic, H 2 S negative Corynebacterium xerosis Gram positive club-shaped bacilli, acid-fast negative, galactose fermentation positive, non-motile, acid from litmus milk, catalase positive, not hemolytic, H 2 S negative Aeromonas hydrophila Gram negative bacilli, acid-fast negative, ferments galactose, catalase positive, motile, acid from litmus milk, not hemolytic, H 2 S positive
Dichotomous Key to Identifying Eight Bacteria Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Streptococcus pneumoniae Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Aeromonas hydrophila Gram stain negative positive Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Aeromonas hydrophila Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Streptococcus pneumoniae Acid-fast staining Galactose fermentation positive Alcaligenes faecalis Aeromonas hydrophila Citrobacter freundii Pseudomonas fluorescens H 2 S production positive Aeromonas hydrophila negative acid fast negative Litmus milk acid Alcaligenes Citrobacter faecalis freundii alkaline Pseudomonas fluorescens not acid fast Mycobacterium smegmatis Corynebacterium xerosis Mycobacterium leprae Streptococcus pneumoniae Catalase produced positive Mycobacterium leprae negative Mycobacterium smegmatis
Table of Characteristics for Eight Bacteria Organism Characteristics Alcaligenes faecalis Gram negative bacillus, acid-fast negative, ferments galactose, catalase positive, motile, alkaline with litmus milk, not hemolytic, H 2 S negative Citrobacter freundii Gram negative bacillus; acid-fast negative, does not ferment galactose, catalase positive, non-motile, acid produced in litmus milk, not hemolytic, H 2 S negative Pseudomonas fluorescens Gram negative bacillus, acid-fast negative, does not ferment galactose, catalase positive, non-motile, alkaline in litmus milk, hemolytic, H 2 S negative Streptococcus pneumoniae Gram positive oval coccus found as streptococci, acid-fast negative, galactose fermentation negative, catalase negative, non-motile, acid in litmus milk, hemolytic, H 2 S negative Mycobacterium smegmatis Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-negative, , non-motile, alkaline in litmus milk, catalase positive, not hemolytic, H 2 S negative Mycobacterium leprae Gram positive club-shaped bacilli, acid-fast positive, galactose fermentation negative, catalase-positive, non-motile, alkaline in litmus milk not hemolytic, H 2 S negative Corynebacterium xerosis Gram positive club-shaped bacilli, acid-fast negative, galactose fermentation positive, non-motile, acid from litmus milk, catalase positive, not hemolytic, H 2 S negative Aeromonas hydrophila Gram negative bacilli, acid-fast negative, ferments galactose, catalase positive, motile, acid from litmus milk, not hemolytic, H 2 S positive
Dichotomous Key to Identifying Eight Bacteria Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Streptococcus pneumoniae Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Aeromonas hydrophila Gram stain negative positive Alcaligenes faecalis Citrobacter freundii Pseudomonas fluorescens Aeromonas hydrophila Mycobacterium smegmatis Mycobacterium leprae Corynebacterium xerosis Streptococcus pneumoniae Acid-fast staining Galactose fermentation positive Alcaligenes faecalis Aeromonas hydrophila Citrobacter freundii Pseudomonas fluorescens H 2 S production positive Aeromonas hydrophila negative acid fast negative Litmus milk acid Alcaligenes Citrobacter freundii faecalis alkaline Pseudomonas fluorescens not acid fast Mycobacterium smegmatis Corynebacterium xerosis Mycobacterium leprae Streptococcus pneumoniae Catalase produced positive Mycobacterium leprae negative Hemolysis positive Mycobacterium Streptococcus smegmatis pneumoniae negative Corynebacterium xerosis
DIVERSITY!
Ecosystem Diversity
Diversity! Ecosystem Diversity: The variety of ecosystems in the biosphere (landscapes) Ecosystem Services: Can you think of any examples? For a grassland? A ravine? Wetlands? Temperate forests? Tropical rainforests? Is it important to preserve ecosystem diversity? Why?
Diversity! Species Diversity: The variety and abundance of species in a given area (community) -What are some examples of species diversity? -How might species diversity at the level of primary production (plants) affect other trophic levels in food chains?
Species Diversity
Species Diversity
Species Diversity
Species Diversity
Diversity! Genetic Diversity: The variety of genes in a population of interbreeding individuals -Why is genetic diversity important? -What would happen if a population lacked genetic diversity?
Genetic Diversity (Homo sapiens)
Resilience! Biodiversity is the most important factor in ensuring resilience at the ecosystem (landscape), species (communities), and genetic (population) scales • What is resilience? Resilience is the ability of an ecosystem to maintain a balance in the face of outside disturbances • What are some examples of threats to resilience? Loss of resilience = more brittle populations, communities, and ecosystems • How does this relate to Endangered Species?
ENDANGERED SPECIES PROFILE #1 Polar bear (Ursus maritimus)
IMPORTANCE of the POLAR BEAR Polar bears are at the top of the food chain and have an important role in the overall health of the marine environment. Over thousands of years, polar bears have also been an important part of the cultures and economies of Arctic peoples. Polar bears depend on sea ice for their existence and are directly impacted by climate change—serving as important indicator species. http: //worldwildlife. org/species/polar-bear
A Warming Climate Takes its Toll on the Polar Bears of Hundson Bay
Homework Review: text pp. 44 -47: 1 -22, 30, 32, 33 text pp. 48 -49: 1 -13, 17 -23 (use the self-check summary at the bottom of page 49 for questions you don’t understand) Quiz Next Class! - Wed, Feb 13
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