TestStudyGuide1 - Dustin Lee Biology 9/19/2006 Prokaryotes...

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Dustin Lee 9/19/2006 Biology Prokaryotes - No nucleus - Unicellular - No membrane organelles o Mitochondria, endoplasmic reticulum, vacuole - bacteria Eukaryotes - Have nucleus - Have membrane organelles - Cells larger - Can be multicellular - Any other kingdom Heterotroph: Has to ingest food Autotroph: Can make its own food Unicellular/multicellular Prokaryote/Eukaryote Special Characteristics Moneran = uni Prokaryotic - No nucleus - No membrane organelles - Decomposer - Asexual Eukaryotic - Asexual and sexual - Lack cell walls Fungi = multi (except yeast) Eukaryotic - Decomposer - Has walls - Asexual and sexual Plantae = multi Eukaryotic - Photosynthesis - Cell walls - Sessile - Asexual and sexual Animalia = multi Eukaryotic - Heterotroph - Sexual - No cell walls Ecology: The study of interrelations of one another species and the environment - Organism: individual organism - Species: organisms sharing similar genes that can reproduce and have fertile offspring - Population: groups of similar species - Community: group of similar populations
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Dustin Lee 9/19/2006 Biology - Ecosystem: a community or living and non-living parts Food Chains/Trophic Relationships Grass Rabbit Hawk Producer 1 st consumer 2 nd consumer Autotroph Heterotroph Heterotroph Herbivore Carnivore - In ecosystems feeding roles are called trophic levels - Organisms in a food chain always starting with a producer - It is much more realistic to portray food chains as a complex food web - Food chains can be represented by food pyramids, with the producer at the bottom and the top predator at the top - Pyramids represent amount of numbers, biomass, and energy - The mass of all producers outweigh the mass of all the primary consumers and so on - There is more energy available in producers than primary consumers - Available energy is lost at each level - Warning coloration (warns of toxins) - Cryptic coloration (camouflage) - Batesian Mimicry: resembling a distasteful species without being toxic itself - Mullerian Mimicry: group defense, all toxic members resemble each other - Population of prey has to be higher than predator, populations fluctuate in cycles with predator following prey - Competitive Exclusion Principle: No two species can occupy the same niche - Niche: the total relationship of an organism to its environment - Two types of competition o Intraspecific Among species o Interspecifc Between species Carbon-Oxygen Cycle 1. These two linked cycles provide plants and animals with energy and the materials
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This note was uploaded on 09/21/2011 for the course BIOG 1110 taught by Professor Randywayne during the Spring '09 term at Cornell University (Engineering School).

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TestStudyGuide1 - Dustin Lee Biology 9/19/2006 Prokaryotes...

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