Test Bank For Anatomy Physiology The
Unity Of Form And Function 10th
Edition By Kenneth Saladin 2026-2027
Updated Questions And Answers With
Rationales| Study Guide
Student name:__________
1) Minerals are organic elements extracted from the soil by plants.
⊚ true
⊚ False
Answer: false
Rationale: Minerals are inorganic elements, not organic.
2) Molecules composed of two or more atoms are called compounds.
⊚ true
⊚ false
Answer: false
Rationale: Molecules composed of two or more different types of atoms are
compounds. A molecule can be made of the same atoms (like $O_2$), which is not
a compound. (Note: Depending on the specific introductory textbook definition,
this is strictly false, though sometimes misconstrued. Saladin's text defines a
compound as two or more different elements).
Version 1 1
,3) Hydrogen, deuterium, and tritium are three isotopes of hydrogen.
⊚ true
⊚ False
Answer: true
Rationale: All three have one proton but different numbers of neutrons (0, 1, and 2
respectively).
4) Potassium, sodium, and chlorine are trace elements.
⊚ true
⊚ False
Answer: false
Rationale: These are major electrolytes/minerals needed in larger quantities, not
trace elements (like zinc, copper, or iodine).
5) Ionic bonds break apart in water more easily than covalent bonds do.
⊚ true
⊚ False
Answer: true
Rationale: Water molecules easily dissociate ionic compounds (like salt) by
surrounding the individual ions.
Version 1 2
,6) A solution is a mixture of two or more substances that are physically blended
but not chemically combined.
⊚ true
⊚ False
Answer: true
Rationale: This is the exact definition of a chemical solution/mixture.
7) The pH of blood plasma is approximately 7.4, which is slightly acidic.
⊚ true
⊚ False
Answer: false
Rationale: A pH of 7.4 is slightly basic (alkaline). Neutral is 7.0.
8) The high heat capacity of water makes it a very ineffective coolant.
⊚ true
⊚ False
Answer: false
Rationale: Its high heat capacity and high heat of vaporization make it an excellent
coolant (e.g., through sweating).
9) In an exchange reaction, covalent bonds are broken and new covalent bonds are
formed.
⊚ true
⊚ False
Answer: trueRationale: Exchange reactions ($AB + CD \rightarrow AD + CB$)
involve both decomposition (breaking bonds) and synthesis (forming bonds).
Version 1 3
, 10) Chemical reactions in which larger molecules are broken down into smaller
ones are called catabolic reactions.
⊚ true
⊚ False
Answer: true
Rationale: Catabolism refers to metabolic breakdown reactions.
11) The opposite of a dehydration synthesis reaction is a hydrolysis reaction.
⊚ true
⊚ False
Answer: true
Rationale: Dehydration synthesis removes water to join molecules; hydrolysis
adds water to break them apart.
12) Unsaturated fatty acids have as much hydrogen as they can carry.
⊚ true
⊚ False
Answer: false
Rationale: Saturated fatty acids are fully saturated with hydrogen. Unsaturated
fatty acids contain double bonds and fewer hydrogens.
13) A dipeptide is a molecule with two peptide bonds.
⊚ true
⊚ False
Answer: false
Rationale: A dipeptide consists of two amino acids joined by one peptide bond.
Version 1 4
Unity Of Form And Function 10th
Edition By Kenneth Saladin 2026-2027
Updated Questions And Answers With
Rationales| Study Guide
Student name:__________
1) Minerals are organic elements extracted from the soil by plants.
⊚ true
⊚ False
Answer: false
Rationale: Minerals are inorganic elements, not organic.
2) Molecules composed of two or more atoms are called compounds.
⊚ true
⊚ false
Answer: false
Rationale: Molecules composed of two or more different types of atoms are
compounds. A molecule can be made of the same atoms (like $O_2$), which is not
a compound. (Note: Depending on the specific introductory textbook definition,
this is strictly false, though sometimes misconstrued. Saladin's text defines a
compound as two or more different elements).
Version 1 1
,3) Hydrogen, deuterium, and tritium are three isotopes of hydrogen.
⊚ true
⊚ False
Answer: true
Rationale: All three have one proton but different numbers of neutrons (0, 1, and 2
respectively).
4) Potassium, sodium, and chlorine are trace elements.
⊚ true
⊚ False
Answer: false
Rationale: These are major electrolytes/minerals needed in larger quantities, not
trace elements (like zinc, copper, or iodine).
5) Ionic bonds break apart in water more easily than covalent bonds do.
⊚ true
⊚ False
Answer: true
Rationale: Water molecules easily dissociate ionic compounds (like salt) by
surrounding the individual ions.
Version 1 2
,6) A solution is a mixture of two or more substances that are physically blended
but not chemically combined.
⊚ true
⊚ False
Answer: true
Rationale: This is the exact definition of a chemical solution/mixture.
7) The pH of blood plasma is approximately 7.4, which is slightly acidic.
⊚ true
⊚ False
Answer: false
Rationale: A pH of 7.4 is slightly basic (alkaline). Neutral is 7.0.
8) The high heat capacity of water makes it a very ineffective coolant.
⊚ true
⊚ False
Answer: false
Rationale: Its high heat capacity and high heat of vaporization make it an excellent
coolant (e.g., through sweating).
9) In an exchange reaction, covalent bonds are broken and new covalent bonds are
formed.
⊚ true
⊚ False
Answer: trueRationale: Exchange reactions ($AB + CD \rightarrow AD + CB$)
involve both decomposition (breaking bonds) and synthesis (forming bonds).
Version 1 3
, 10) Chemical reactions in which larger molecules are broken down into smaller
ones are called catabolic reactions.
⊚ true
⊚ False
Answer: true
Rationale: Catabolism refers to metabolic breakdown reactions.
11) The opposite of a dehydration synthesis reaction is a hydrolysis reaction.
⊚ true
⊚ False
Answer: true
Rationale: Dehydration synthesis removes water to join molecules; hydrolysis
adds water to break them apart.
12) Unsaturated fatty acids have as much hydrogen as they can carry.
⊚ true
⊚ False
Answer: false
Rationale: Saturated fatty acids are fully saturated with hydrogen. Unsaturated
fatty acids contain double bonds and fewer hydrogens.
13) A dipeptide is a molecule with two peptide bonds.
⊚ true
⊚ False
Answer: false
Rationale: A dipeptide consists of two amino acids joined by one peptide bond.
Version 1 4
