TEST BANK FOR ANATOMY & PHYSIOLOGY,, THE UNITY OF FORM AND FUNCTION 8TH EDITION KENNETH SALADIN ANSWER KEY]TEST BANK FOR ANATOMY & PHYSIOLOGY,, THE UNITY OF FORM AND FUNCTION 8TH EDITION KENNETH SALADIN ANSWER KEY]TEST BANK FOR ANATOMY & PHYSIOLOGY,, THE UNITY OF FORM AND FUNCTION 8TH EDITION KENNE...
TEST BANK FOR ANATOMY &
PHYSIOLOGY,, THE UNITY OF
FORM AND FUNCTION 8TH
EDITION KENNETH
SALADIN
ANSWER KEY]
, Chapter 02
The Chemistry of Life
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 of two or more substances that are physically blended but not chemically
combined.
True False
7. The pH of blood plasma 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. Chemical reactions in which larger molecules are broken down into smaller ones are called catabolic
reactions.
True False
11. The opposite of a dehydration synthesis reaction is a hydrolysis reaction.
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. Na (atomic no. 11) reacts with Cl (atomic no. 17) to become stable. In the reaction, Na will ,
while Cl will .
A. accept one electron; give up one electron
B. give up one proton; accept one proton
C. share one electron with chlorine; share one electron with sodium
D. become an anion; become a cation
E. give up one electron; accept one electron
20. Oxygen has an atomic number of 8 and an atomic mass of 16. How many valence electrons does it have?
A. 2
B. 4
C. 6
D. 8
E. 16
21. Oxygen has an atomic number of eight. When two oxygen atoms come together, they form a(n)
bond.
A. hydrogen
B. nonpolar covalent
C. polar covalent
D. ionic
E. Van der Waals
22. When table salt, sodium chloride (NaCl), is placed in water _ .
A. Na+ and Cl- form ionic bonds with each other
B. Na+ and Cl- form polar covalent bonds with each other
C. Na+ and Cl- form hydrogen bonds with water
D. Ionic bonds between Na+ and Cl- are broken
E. Na+ and Cl- become separated by their Van der Waals forces
23. The bonding properties of an atom are determined by its .
A. electrons
B. protons
C. positrons
D. neutrons
E. photons
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