Point and Nonpoint Pollution Sources Point Sources Point-source pollutants in surface water and groundwater are usually found in a plume that has the highest concentrations of the pollutant nearest the source (such as the end of a pipe or an underground injection system) and diminishing concentrations farther away from the source. The various types of point-source pollutants found in waters are as varied as the types of business‚ industry‚ agricultural‚ and urban sources that produce them. Commercial
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Unicellular: one cell‚ bacteria Multicellular 1. Prokaryotic a. No nucleus b. DNA c. Smaller and simpler d. All organisms are unicellular 2. Eukaryotic e. Nucleus (DNA in nucleus) Diversity 3 Domains 1. Archaea a. Prokaryotic 2. Bacteria b. Prokaryotic 3. Eukarya c. All have cells with a nucleus d. Plants
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LIFE ON EARTH REVISION Analysis of the oldest sedimentary rocks provides evidence for the origin of life. - Identify the relationship between the conditions on early Earth and the origin of organic molecules. - Formation of the organic molecule was the first event in the evolution of life. - The molecules provided a building block for cell formation and the food for the earliest life. - Present day life’s atmosphere contains: - Oxygen - Water - Carbon
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SBI 3U1 – 07: Biology Examination Definitions Unit 1: Diversity of Living Things ➢ Species: a group of organisms that can interbreed in nature and produce fertile offspring. ➢ Morphology: the branch of biology that deals with the structure or form of organisms. ➢ Phylogeny: the evolutionary history of a species. ➢ Taxonomy: the branch of biology that identifies‚ names‚ and classifies species based on natural features. ➢ Binomial nomenclature: the system of giving a two-word Latin name to
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Question 1 0.5 out of 0.5 points Which of the following is not a property of life? Answer Selected Answer: Populations of organisms rarely change over time. Question 2 0.5 out of 0.5 points A newly discovered multicellular organism obtains food by digesting dead organisms. Such an organism is most likely a member of the kingdom ______. Answer Selected Answer: Fungi Question 3 0.5 out of 0.5 points Please use
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Finalized Notes Cells are small membrane bound units filled with concentrated aqueous solution of chemicals and given the ability of reproducing itself by dividing. Thus for this purpose the cells are the fundamental unit of life. If cells are modified to specific specialization they cause the cell to lose its ability to reproduce‚ as a result they end up depending on other cells for the basic needs. In all living things genes are stored in the DNA molecule‚ encoded in the same chemical code
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CATALASE Catalase is a common enzyme found in nearly all living organisms exposed to oxygen. It catalyzes the decomposition of hydrogen peroxide to water and oxygen. It is a very important enzyme in reproductive reactions. Likewise‚ catalase has one of the highest turnover numbers of all enzymes; one catalase molecule can convert millions of molecules of hydrogen peroxide to water and oxygen each second. Catalase is a tetramer of four polypeptide chains‚ each over 500 amino acids long. It contains
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Astrobiology Textbooks Notes Introductions: Chapter One Astrobiology= combination of astronomy (study of universe) and and biology (study of life); “literally the study of life in the universe” What are we searching for? extraterrestrial life‚ life beyond earth we are looking for any sign of life‚ be it simple‚ complex‚ or intelligent The basis for life Life can move so can clouds Life can grow so can crystals Life can reproduce and spread so can fire The scientific search for
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Diversity: variety of species and relative abundance of the species in an area The more species‚ the more complicated and robust‚ allowing survival in environmental changes Each species has its own contributions Species Description Sulfolobus archaea Live in hot springs‚ mini organisms Sea wasp/Box jellyfish Live in tropical oceans Giant sequoia trees Grow in North America‚ Europe‚ Australia and New Zealand Blue green algae Live everywhere‚ ocean‚ soil‚ bare rock‚ hair of sloth Ants Everywhere
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Exam Review – January 2013 Diversity Unit - List taxonomic ranks in order. What is the significance of this order? Domain‚ Kingdom‚ Phylum‚ Class‚ Order‚ Family‚ Genus‚ Species. Classification of species: kingdoms contain many different types of organisms‚ each taxon contains progressively fewer types of organisms‚ taxon “species” is narrowest category‚ containing only one type of organism. As you go from kingdom to species‚ organisms share more and more in common. - Explain and give an example
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