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Isosotopes are atoms of the same element with the same number of protons and... |
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a diffferent number of neutrons |
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Ice floats on water because... |
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water expands when it freezes |
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A substance with a pH of 6 is called... |
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In chemical reactions, atoms are... |
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3 Forms of energy that may be released during a chemical reaction... |
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A substance that accelerates the rate of a chemical reactionis called a |
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3 functions of the nucleus |
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storing , controling most of the cell's processes, containing the information needed to make proteins |
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Which organelle would you expect to find in plan cells but not in animal cells |
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WHich means of particle transport requires input of energy from cells |
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An animal cell that is surrounded by water will burst because the osmotic pressure causes |
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water to move into the cell |
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all of the following are types of tissue EXCEPT. muscle, connective, digestive, nerve |
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Organisms that cannot make their own food and must obtain energy from the foods they eat are called |
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What are the three parts of an ATP molecule |
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adenine, ribose, and 3 phosphate groups |
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A student is collecting the gas given off from a plant in warm, sunlight. The gas being collected is likely.. |
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What are the products of the light-dependent reactions. |
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The products of glycolysis are |
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Milk is converted to yogurt under certain conditions when the microorganisms in the milk produce acid due to... |
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The Krebs cycle starts with ... |
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pyruvic acid and yields carbon dioxide |
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The ETC can be found in.. |
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prokaryotes, animals & plants |
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________ & _________ pass high-energy electrons into the ETC. |
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Breathing heavily after a foot race is your body's way of |
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T or F: Alcoholic fermentation is a source of energy during excercise |
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Plants cannot release energy from glucose using |
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T or F: The symbol for the isotope oxygen-18 is written O18+ |
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T or F: The cytoskeleton helps to move organelles within the cell |
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T or F: during the light independent reactions, plants use the energy in ATP and NADPH to build high energy sugars |
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T or F: If a plant is placed in a greenhouseheld at 40 C, the plant will probably increase its normal rate of photosynthesis |
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T or F: The Krebs Cycle releases energy in the form of ATP |
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If an atom contains 15 protons, it must contaain 15... |
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Unlike the resulting stable compound--table salt-- the two gases making up this compund ... |
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A chemical bond formed by the transfer of electrons is an... |
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Due to _________ forcesk, the design of a gecko's feet enables it to climb up vertical surfaces. |
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Water's _______ allows it to dissolve compounds such as table salt. |
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Chemical reactions that _____ energy will not occur without a source of energy. |
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The name of an enzyme usually ends in |
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Eukaryotes contain specialized structures that perform important cellular functions. These structures are called |
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During cell division, chromatin condenses to form _______, which are threadlike structures containing genetic material. |
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Enzymes in the ________ _________ attach carbohydrates and lipids to proteins. |
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Large molecules such as glucose that cannot cross the lipid bilayer can still move across the mebrane with a concentration gradient by ____________ ______________. |
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The cells in a multicellular organism have specific jobs. This is called ___________. |
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_____________________ concluded that plants gain most of their mass from water alone. |
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A mebrane protein called ____________ allows H+ ions to pass through the thylakoid membrane. |
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Why are atoms considered nuetral? |
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atoms have equal numbers of electrons and protons |
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the sum of protons and nuetrons in the nucleus of an atom |
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the smallest unit of most chemical compounds |
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What accounts for water's properties of adhesion and cohesion? |
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the ability of water to form multiple hydrogen bonds |
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Where would you most likely find shared elecrons in a water molecule? |
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Sea water is _______ acidic then pure water. |
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carbohydrates, lipids, nucleic acids, & proteins |
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Name two essential roles that enzymes play in cells. |
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1. regulating chemical pathways 2. releasing energy |
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Why are six carbon dioxide molecules required to make one glucose molecule? |
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each carbon dioxide molecule contains 1 carbon atom & a glucose molecule contains 6 carbon atoms |
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Who is the best card maker in the world? |
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