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BIOL 1543: TEST 1
Venomous fish outnumber all other venomous vertebrates.
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a. True
b. False
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Ecosystem
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all of the organisms living in a particular area
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Community
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All the living organisms in an ecosystem.
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Population
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localized group of individuals of a species.
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Organism
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An individual form of life, such as plant, animal, bacterium, protist, or fungus
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All ecosystems are closed except for solar energy.
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... |
Cells
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fundamental unit of life.
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Prokaryotic Cells
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simple cells, without a nucleus
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Eukaryotic Cells
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cell that has a membrane bound DNA containing nucleus with other organelles located in the cytoplasm
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Morphology
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The study of structure.
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Natural Selection?
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The principle that, traits contributing to reproduction and survival will most likely be passed on to succeeding generations.
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Discovery Science
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Inductive reasoning
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Hypothesis Science
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inductive reasoning
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How to build a galaxy
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A giant star collapses
compacts
Explodes into a supernova (explosive debt of a massive star at least 8 times bigger than the sun)
Leaving behind nebular clouds (immense interstellar cloud of dust, hydrogen, helium, and ionized gas)
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Nebula Clouds
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Immense interstellar cloud of dust and gas; can condense to form new solar systems
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How to build a solar system
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The cloud begins to spin and flatten into a disk. The center of the disk forms the sun, the rest of the disk condenses into the planets
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Layers of the earth
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Crust
Mantle
Outer core
Inner core
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Carbon, hydrogen, oxygen, and nitrogen make up the 96.3% of elements needed for life.
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... |
Caries
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Tooth decay
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Atoms
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consist of protons, neutrons and electrons
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Protons |
positively charged. Number of protons equals atomic number.
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Neutrons
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neutrally charged. protons subtracted from the mass.
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Electrons
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negatively charged
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Atomic Mass
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protons plus neutrons
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isotopes
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A varient form of an atom.
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Hydrogen
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simplest element.
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covalent bond
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a bond in which atoms share pair(s) of electrons
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Electron Sharing
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covalent bonds join atoms
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nonpolar molecule
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covalently bonded atoms share electrons equally
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Polar Covalent Bond
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electrons are shared unequally between atoms
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Cohesion
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the inner molecular interaction between like molecules
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What does cohesion cause?
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causes surface tension which is the effect on the surface of a liquid which makes it behave as if there is a thin elastic film under tension is covering the liquid, which allows particles or some organisms to walk on water.
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