Test Bank For Anatomy And Physiology 7th Edition By Patton Thibodeau
Patton and Thibodeau: Anatomy & Physiology, 7th Edition
Chapter 2: The Chemical Basis of Life
Test Bank
TRUE/FALSE
1. Biochemistry deals with the chemical makeup of living organisms and the underlying process of life activities.
ANS: T DIF: Memorization REF: Page 34
TOP: Introduction
2.The number of protons in the nucleus of an atom determines its atomic mass.
ANS: F DIF: Memorization REF: Page 36
TOP:Atomic Number and Atomic Weight
3.The positively charged electrons are found in clouds outside the nucleus of an atom.
ANS: F DIF: Memorization REF: Page 36
TOP:Atomic Structure
4.Two shared pairs of electrons represent a single covalent bond.
ANS: F DIF: Application REF: Page 39 TOP: Covalent Bonds
5.The digestion of food is an example of a decomposition reaction.
ANS:TDIF:ApplicationREF:Page 40
TOP:Chemical Reactions
6.The number and arrangement of electrons orbiting in an atom’s outer shell determine its chemical activity.
ANS: T DIF: Application REF: Page 37 TOP: Energy Levels
7.An atom is chemically inert if its outermost shell has two pairs of electrons.
ANS: F DIF: Application REF: Page 37 TOP: Energy Levels
8.An isotope of an element contains the same number of neutrons but different numbers of protons.
ANS: F DIF: Memorization REF: Page 37
TOP: Isotopes
9.Electrovalent and ionic bonds are the same.
ANS: T DIF: Memorization REF: Page 38
TOP: Ionic Bonds
10.Radiation results from the breaking apart of the nucleus of an atom.
ANS: T DIF: Memorization REF: Page 38
TOP:Radioactivity
11.Radioactivity can cause an atom of one element to change to that of another element.
ANS: T DIF: Memorization REF: Page 38
TOP:Radioactivity
12.Ionizing radiation can be cancer-producing.
ANS: T DIF: Memorization REF: Page 38
TOP:Radioactivity
13.A substance that resists changes in pH when acids or bases are added is called a buffer.
ANS: T DIF: Application REF: Page 45 TOP: Buffers
14.The chemical reaction of an acid with a base always produces a salt and water.
ANS: T DIF: Application REF: Page 45 TOP: Salts
15.Water is the universal solvent.
ANS: T DIF: Memorization REF: Page 43
TOP: Water
16.Electrolytes include acids, bases, and salts.
ANS: T DIF: Memorization REF: Page 44
TOP: Electrolytes
17.All inorganic substances are free from carbon.
ANS: F DIF: Memorization REF: Page 42
TOP: Organic and Inorganic Compounds
18.Electrolytes are characterized by having either a positive or a negative charge.
ANS: T DIF: Memorization REF: Page 44
TOP: Electrolytes
19.Acids are electrolytes that produce OH ions.
ANS: F DIF: Memorization REF: Page 44
TOP: Acids
20.pH stands for the negative logarithm of the hydrogen ion concentration.
ANS: T DIF: Memorization REF: Page 44
TOP:The pH Scale
21.Proteins are the most abundant of the carbon-containing compounds in the body.
ANS: T DIF: Memorization REF: Page 52
TOP: Proteins
22.Glycogen and starch are both examples of polysaccharides.
ANS: T DIF: Memorization REF: Page 48
TOP: Disaccharides and Polysaccharides
23.There are a total of 20 essential amino acids.
ANS: F DIF: Memorization REF: Page 52
TOP:Amino Acids
24.Steroids are often called tissue hormones.
ANS: F DIF: Synthesis REF: Page 50 TOP: Steroids
25.DNA molecules are the largest molecules in the body.
ANS: T DIF: Memorization REF: Page 57
TOP:Nucleic Acids
26.Adenine and thymine are referred to as purine bases, which are important constituents of a DNA molecule.
ANS: F DIF: Memorization REF: Page 57
TOP:Nucleic Acids
27.Metabolism includes the processes of both anabolism and catabolism.
ANS: T DIF: Memorization REF: Page 41
TOP: Metabolism
28.The ability of proteins to perform their function depends on their shape.
ANS:TDIF:ApplicationREF:Page 56
TOP: Levels of Protein Structure
29.Enzymes are proteins that function by the lock-and-key theory.
ANS:TDIF:SynthesisREF:Page 56
TOP: Levels of Protein Structure
30.ATP is broken down in an anabolic reaction.
ANS: F DIF: Application REF: Page 41 TOP: Catabolism
31.Catabolism and anabolism are major types of metabolic activity.
ANS: T DIF: Memorization REF: Page 41
TOP: Metabolism
32.Sodium chloride is an example of an ionic bond.
ANS: T DIF: Application REF: Page 38 TOP: Ionic Bonds
33.The digestion of food is an example of a synthesis reaction.
ANS:FDIF:SynthesisREF:Page 40 | Page 41
TOP:Chemical Reactions
34.The pH scale indicates the degree of acidity or alkalinity of a solution.
ANS: T DIF: Memorization REF: Page 44
TOP:Acids and Bases
35.Litmus paper will turn red in the presence of a base.
ANS: F DIF: Memorization REF: Page 44
TOP:Acids and Bases
36.High-density lipoprotein (HDL) is also called the “bad” cholesterol.
ANS:FDIF:ApplicationREF:Page 51 (Box 2-2)
TOP:Blood Lipoproteins
37.The nonessential amino acids cannot be produced from the other amino acids or from simple organic molecules.
ANS: F DIF: Memorization REF: Page 52
TOP:Amino Acids
38.The atomic weight of an atom is equal to the number of protons plus the number of neutrons.
ANS: T DIF: Memorization REF: Page 36
TOP:Atomic Number and Atomic Weight
39.The mass of a proton is almost exactly equal to the mass of an electron.
ANS: F DIF: Memorization REF: Page 33
TOP:Atomic Number and Atomic Weight
40.Hydrogen will react with other atoms to get 8 electrons in its outer energy level.
ANS: F DIF: Application REF: Page 37 TOP: Energy Levels
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