Living Environment Official Review Set

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35 Terms

1
Hormone
________: A secretion that is released directly into the bloodstream by an endocrine gland.
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2
Hydrocarbon
________: A molecule that contains only hydrogen and carbon.
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3
Respiration
________: The process which releases chemical bond energy from organic nutrients (food)
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4
Lipase
________: The enzyme that breaks down lipids into fatty acids and glycerol.
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5
Reaction
________: The chemical interaction between reactants resulting in products.
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6
Lipid
________: An organic molecule that is made of three fatty acid molecules and one glycerol molecule.
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7
Molecule
________: Two or more atoms chemically combined.
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8
Inorganic
________: A compound that does not contain both carbon and hydrogen.
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9
Fat
________: An organic molecule that is made of three fatty acid molecules and one glycerol molecule; a lipid.
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10
Graph
________: A visual comparison of the data from laboratory investigations usually resulting in a line or bars used to observe general trends in the data.
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11
PH
________: A scale that measures the acidity or basicity of a solution.
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12
Starch
________: A carbohydrate composed of many glucose molecules; a polysaccharide.
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13
Small intestine
________: A long coiled tube that is the site of most of the chemical digestion and absorption that takes place in the digestive tract.
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14
Photosynthesis
________ The process by which green plants (autotrophs) convert light energy to chemical- bond energy stored in organic nutrients.
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15
Carbohydrate
________: An organic nutrient made of carbon, hydrogen and oxygen and having a carbon to hydrogen ratio of 2: 1.
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16
Catalyst
________: A chemical that speeds up the rate of a chemical reaction but is not used up.
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17
Complex carbohydrates
________: Polysaccharides or starches such as glycogen which are made of many monosaccharides or simple sugars.
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18
Polymer
________: A large molecule made of repeating units.
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19
Glucose
________: A monosaccharide that is the primary source of cellular energy in most organisms.
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20
Nucleic acid
________: An organic compound composed of a phosphate, a 5- carbon sugar and a nitrogenous base.
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21
Substrate
________: The molecule that an enzyme acts on.
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22
Nucleotide
________: The basic unit of nucleic acids.
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23
DNA
Genetic: Pertaining to ________, the hereditary material.
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24
5 carbon
It consists of a(n) ________ sugar bonded to a phosphate and a nitrogenous base.
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25
Ionic bond
________: The force of attraction between two oppositely charged ions.
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26
Plasma membrane
________: The cell membrane; the semi- permeable outer boundary of the cell.
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27
Acid
________: A substance which contains an excess of hydrogen ions and has a pH that is less than 7.
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28
Enzyme
________: A protein that speeds up the rate of biochemical reactions; an organic catalyst.
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29
Excretion
________: The removal of metabolic wastes.
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30
Covalent bond
________: A type of chemical bond formed when atoms share electrons.
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31
Digestion
________: The enzyme- controlled process that changes large insoluble molecules into small soluble molecules.
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32
Digestive system
________: The specialized organs that act on nutrients as they are digested and absorbed by an organism.
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33
Protein synthesis
________: The making of a protein from amino acids by matching the anticodon of the transfer RNA to the codon of the messenger RNA.
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34
Organic compound
________: A compound that contains the elements carbon and hydrogen.
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35
DNA
________ (deoxyribonucleic acid): The nucleic acid that stores the hereditary information or genetic material.
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