Question 1

Which property of water allows it to help maintain a stable internal body temperature despite external temperature changes?

Accepted Answer

High heat capacity

Question 2

A patient is suffering from dehydration. Which property of water is most directly compromised, affecting the body's ability to transport nutrients and waste?

Accepted Answer

Polar solvent properties

Question 3

Which of the following is an example of an inorganic compound found in the human body?

Accepted Answer

Water

Question 4

What is the result of mixing a strong acid with a strong base in a neutralization reaction?

Accepted Answer

A salt and water

Question 5

Which equation correctly represents the dissociation of hydrochloric acid in water?

Accepted Answer

$$\mathrm{HCl} \rightarrow \mathrm{H}^+ + \mathrm{Cl}^-$$

Question 6

A solution has a hydrogen ion concentration of $$[\mathrm{H}^+] = 1 	imes 10$$^{-5}$$ M. What is its pH?

Accepted Answer

$$5$$

Question 7

Which of the following best describes a buffer’s function in the blood?

Accepted Answer

It resists abrupt changes in pH by binding or releasing hydrogen ions.

Question 8

Which of the following is NOT a property of water that makes it vital for life?

Accepted Answer

Ability to conduct electrical current

Question 9

Which of the following ions is most important for maintaining electrical activity in nerve and muscle cells?

Accepted Answer

Potassium ion ($$\mathrm{K}^+)$$

Question 10

If a patient’s arterial pH drops to 6.8, what is the most likely physiological consequence?

Accepted Answer

Survival is unlikely due to enzyme denaturation

Question 11

Which of the following best explains why salts are classified as electrolytes?

Accepted Answer

They dissociate into ions in water, allowing the solution to conduct electricity.

Question 12

Which property of water is most important for evaporative cooling in humans?

Accepted Answer

High heat of vaporization

Question 13

A solution with a pH of 8.5 is considered:

Accepted Answer

Alkaline (basic)

Question 14

Which of the following is a correct statement about acids and bases?

Accepted Answer

Acids release hydrogen ions and bases release hydroxyl ions.

Question 15

Which of the following is a common salt found in the human body that is important for bone structure?

Accepted Answer

CaCO$$_3$$

Question 16

Which of the following best describes the dissociation of salt in water?

Accepted Answer

Salt dissociates into cations and anions, which are surrounded by water molecules.

Question 17

Which of the following is NOT considered an inorganic compound?

Accepted Answer

Protein

Question 18

Which of the following is a direct consequence of water’s polarity?

Accepted Answer

It dissolves ionic substances and forms hydration layers.

Question 19

Which of the following is true regarding the pH scale?

Accepted Answer

A solution with pH 4 is 100 times more acidic than a solution with pH 6.

Question 20

Which of the following is an example of water’s cushioning property in the human body?

Accepted Answer

Cerebrospinal fluid protecting the brain

Biochemistry in Anatomy & Physiology: Inorganic Compounds, Acids, Bases, and Water 2B

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