Bio Vocabulary

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Biology

Back 1

Scientific study of life

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Cell

Back 2

the basic unit of life

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Unicellular

Back 3

Can live alone

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Multicellular

Back 4

may contain more than one cell

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Emergent Properties

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a hierarchy determined by interaction between individual parts of body.

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What are 3 major things we need to live?

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Energy, metabolism, and photosynthesis

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Homeostasis

Back 7

where temp, moisture, acidity must remain the same..

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Atom

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Smallest unit of an element comprised of protons, neutrons, and electrons (non-living)

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molecular

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union of two or more atoms of the same or different elements

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tissue

Back 10

group of cells with common structure and function

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organ

Back 11

tissues functioning together to preform a specific task

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organ system

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several organs working together

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organism

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an individual, complex individuals contain organ systems

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population

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organisms of the same species in a particular area

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community

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interacting populations in a particular area

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ecosystems

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community plus the physical environment

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biosphere

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regions of the earths crust, water and atmosphere inhabited by living things

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energy

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the capacity to do work

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metabolism

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all the chemical reactions that occur in a given cell

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photosynthesis

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process where sunlight energy is converted to chemical energy

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homeostasis

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where temp moisture level, acidity and other physiological factors must remain in the tolerance level of the organism

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reproduce

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make other organisms like itself

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genes

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contain specific information for how the organism is ordered

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adaptations

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modifications that make organisms better able to function in a particular environment

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taxonomy

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the discipline of identifying and grouping organisms according to certain rules

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prokaryotes

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structurally simple but metabolically complex organisms

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eukaryotes

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structurally complex and metabolically complex organisms

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protists

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generally unicellular with some multicellular

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fungi

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molds, yeasts, mushrooms, and ringworms

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plants

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multicellular photosynthetic organisms

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animals

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multicellular organisms that must ingest and process their food

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chemical cycling

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chemicals move from one population to another in the food chain up to death and decomposition

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energy flow

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occurs from the sun through plants and other members of the food chain

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biodiversity

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the total number and relative abundance of species, the variety of their genes and the different ecosystems where they live

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extinction

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death of a species or larger classification category

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acid

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molecules that raise H ion concentration in a solution

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atom

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smallest particle of an element that displays the properties of the element

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atomic mass

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average of the atom mass units for all isotopes of an atom

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atomic number

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number of protons within the nucleus of an atom

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base

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molecules tending to lower H ion concentration in a solution

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buffer

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substance that tends to resist pH change in solution

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compound

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substance with two or more different chemically combined elements

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covalent bond

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chemical bond in which atoms share a pair of electrons

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electron

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negative subatomic particle

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element

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substance with unique properties and composed of only one atom

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hydrogen bond

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weak attractive force between the H and O opposing water molecules

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hydrophilic

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substance that dissolves in water

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hydrophobic

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substance that does not dissolve in water

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Ion

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positive or negative charged particle

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ionic bond

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chemical bond where ions of opposite charges are attracted to each other

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isotope

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atom of an element with the same atomic number but different mass number

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mass number

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mass of an atom; number of protons plus number of neutrons

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matter

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anything that has a mass and takes up space

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neutron

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subatomic particle with mass and no charge

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pH scale

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measurement scale for hydrogen ion concentration

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proton

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subatomic dissolved in a solvent

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solute

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substance dissolved in a solvent

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solvent

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substance that dissolves a solute

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ATP

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nucleotide with 3 phosphate groups

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carbohydrate

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class or organic molecule

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coenzyme

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nonprotein organic molecule

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dehydration reaction

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chemical reaction, losses water

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denature

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loss of shape thereby

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fatty acid

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molecule contains a hydrocarbon

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glucose

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6 carbon sugar