front 1 All the following are lesser elements in our bodies except A)potassium. B)sulfur .C)nitrogen .D)chlorine. | back 1 nitrogen |
front 2 Valence electrons A)determine chemical bonding properties B)are electrons of the outermost shell C)have a maximum number of eight D)All of the above. | back 2 all of the above |
front 3 The transfer of electrons from one atom to another is called | back 3 A)ionization. |
front 4 If an atom undergoes ionization to lose two electrons, what is its new charge? | back 4 postive 2 |
front 5 Molecules that freely dissolve in water are said to be | back 5 hydrophillic |
front 6 When counting items we commonly refer to twelve of something as "a dozen." What is the term used to describe Avogadro's number of 6.023 X 10 to the 23rd? | back 6 a mole |
front 7 A catalyst would | back 7 reduce the reaction time |
front 8 What type of reaction is represented in the following chemical equation? AB ---> A + B | back 8 A)decomposition reaction |
front 9 ATP is commonly used as a(n) ________________. A)enzyme. B)protein. C)nucleic acid. D)energy currency molecule for the cell. | back 9 D)energy currency molecule for the cell. |
front 10 The removal of a phosphate group would yield A)a large amount of energy. B)biological inactivity of the molecule. C)GDP. D)None of the above. | back 10 A)a large amount of energy. |
front 11 Which of the following is true about a triglyceride molecule? A)It contains a glycerol molecule. B)It contains three fatty acids. C)It has a neutral pH. D)All of the above. | back 11 D)All of the above. |
front 12 Which of the following conjugated carbohydrates are attached to cell surfaces? A)glycogen and amylose B)glycolipids and glycoproteins C)cellulose and starch D)All of the above. | back 12 B)glycolipids and glycoproteins |
front 13 Which of the forms of ionizing radiation from a source outside the body is the most dangerous? A)alpha particle B)beta particle C)gamma ray D)neutron particle | back 13 C)gamma ray |
front 14 Which of the following is incorrect? A)Isotopes have identical chemical behaviors. B)Isotopes have different physical properties. C)Isotopes have the same atomic weights but different atomic numbers. D)Unstable isotopes decay and release radiation. | back 14 C)Isotopes have the same atomic weights but different atomic numbers. |
front 15 The amount of an electrolyte that would neutralize one mole of H+ or OH- is always called | back 15 one equivalent (Eq). |
front 16 Chemical solutions that resist changes in pH are called _____________. | back 16 buffers |
front 17 For the reaction: CO2 + H2O → H2CO3 → HCO3 - + H+, what would result if an acid is added? A)A shift to the left side of the equation would occur producing more CO2 + H2O. B)It would remain at equilibrium. C)A shift to the right side of the equation would occur producing more HCO3 -. D)More H2CO3 would remain. | back 17 A)A shift to the left side of the equation would occur producing more CO2 + H2O. |
front 18 When a nicotinamide molecule picks up an extra electron, it becomes | back 18 reduced |
front 19 The joining of two glucose molecules, with the subsequent removal of water to form maltose is an example of a(n) __________ reaction. | back 19 dehydration synthesis |
front 20 Which of these carbohydrates is impossible for humans to digest? A)cellulose B)amylose C)glycogen D)galactose | back 20 A)cellulose |
front 21 What is the primary function of eicosanoids? | back 21 chemical signaling between cells |