UGA CBIO 2200 - Chapter02practice test (36 pages)

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Chapter02practice test



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Chapter02practice test

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Pages:
36
School:
University of Georgia
Course:
Cbio 2200 - Anat & Physiol I
Anat & Physiol I Documents

Unformatted text preview:

chapter 02 True False Questions 1 Minerals are organic elements extracted from the soil by plants True False 2 Molecules composed of two or more atoms are called compounds True False 3 Hydrogen deuterium and tritium are three isotopes of hydrogen True False 4 Potassium sodium and chlorine are trace elements True False 5 Ionic bonds break apart in water more easily than covalent bonds do True False 6 A solution is a mixture composed of two or more substances that are physically blended but not chemically combined True False 7 Blood pH is approximately 7 4 which is slightly acidic True False 8 The high heat capacity of water makes it a very ineffective coolant True False 9 In an exchange reaction covalent bonds are broken and new covalent bonds are formed True False 10 All the chemical reactions in which larger molecules are broken down to smaller ones are called catabolic reactions True False 11 The opposite of a dehydration synthesis is a hydrolysis True False 12 Unsaturated fatty acids have as much hydrogen as they can carry True False 13 A dipeptide is a molecule with two peptide bonds True False 14 All amino acids have both a carboxyl group and an amino group attached to a central carbon True False 15 ATP is the body s most important form of long term energy storage True False Multiple Choice Questions 16 The most abundant element in the human body by weight is A nitrogen B hydrogen C carbon D oxygen E calcium 17 Sodium has an atomic number of 11 and an atomic mass of 23 Sodium has A 12 neutrons and 11 protons B 12 protons and 11 neutrons C 12 electrons and 11 neutrons D 12 protons and 11 electrons E 12 electrons and 11 protons 18 The chemical properties of an atom are determined by its A protons B electrons C neutrons D protons and neutrons E particles 19 Sodium which has an atomic number of 11 will react with chlorine which has an atomic number of 17 When these two atoms react both become stable To become stable sodium will while chlorine will A accept one



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