Q: Which of the following is the correct formula for calculating the molarity of a solution?

$$\text{Molarity} = \frac{\text{moles of solute}}{\text{liters of solution}}$$

Question 1

Which of the following best describes homeostasis in the human body?

Accepted Answer

The process by which the body maintains a stable internal environment despite changes in external conditions.

Question 2

A patient is experiencing dehydration. Which property of water is most important for maintaining their blood volume?

Accepted Answer

Water's role as a universal solvent

Question 3

Which of the following best illustrates the concept of anatomical position?

Accepted Answer

Standing upright, facing forward, arms at the sides with palms facing forward.

Question 4

Which equation correctly represents the dissociation of water into ions?

Accepted Answer

$$H_2O \rightarrow H^+ + OH^-$$

Question 5

Which of the following is NOT a biological function necessary for survival?

Accepted Answer

Photosynthesis

Question 6

A solution contains 0.1 mol of NaCl dissolved in 1 L of water. What type of mixture is this?

Accepted Answer

Solution

Question 7

Which of the following best describes the relationship between structure and function in anatomy and physiology?

Accepted Answer

Structure determines function; the shape and composition of a body part enable its specific role.

Question 8

Which of the following is an example of a positive feedback cycle in the human body?

Accepted Answer

Blood clotting after injury

Question 9

Which of the following best describes a hydrogen bond?

Accepted Answer

A weak attraction between a hydrogen atom and an electronegative atom such as oxygen or nitrogen.

Question 10

A patient is given intravenous fluids to restore electrolyte balance. Which property of water allows electrolytes to dissolve and be transported in the blood?

Accepted Answer

Water's polarity and ability to dissolve ionic compounds

Question 11

Which of the following is the correct formula for calculating the molarity of a solution?

Accepted Answer

$$	ext{Molarity} = \frac{	ext{moles of solute}}{	ext{liters of solution}}$$

Question 12

Which of the following best describes the atomic structure of carbon?

Accepted Answer

6 protons, 6 neutrons, 6 electrons

Question 13

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

Accepted Answer

Water ($$H_2O)$$

Question 14

Which of the following best explains why enzymes are important for physiological processes?

Accepted Answer

Enzymes act as catalysts, speeding up chemical reactions without being consumed.

Question 15

A patient has a blood pH of 7.1. Which of the following best describes their condition?

Accepted Answer

Acidosis

Question 16

Which of the following is a function of carbohydrates in the human body?

Accepted Answer

Providing energy for cellular processes

Question 17

Which of the following best describes the difference between a mixture and a compound?

Accepted Answer

A mixture consists of two or more substances physically combined, while a compound consists of atoms chemically bonded.

Question 18

Which of the following is an example of a directional term used in anatomy?

Accepted Answer

Superior

Question 19

Which of the following best describes the role of lipids in the human body?

Accepted Answer

Lipids store energy, form cell membranes, and act as signaling molecules.

Question 20

A patient is experiencing muscle cramps due to low calcium levels. Which type of bond is responsible for the formation of calcium chloride ($$CaCl_2) $$used in supplements?

Accepted Answer

Ionic bond

Body Organization and Chemical Basis of Life: Study Notes

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