Question 1

Which property of water is most responsible for its ability to act as a universal solvent in the human body?

Accepted Answer

Its polar compound nature

Question 2

A patient is experiencing metabolic acidosis. Which buffer system in the body is most likely to help regulate their blood pH?

Accepted Answer

HCO3- / H2CO3 buffer system

Question 3

Which of the following best describes the difference between an element and a compound in the context of human physiology?

Accepted Answer

Elements consist of only one type of atom, while compounds are made of two or more types of atoms bonded together.

Question 4

Which functional group is characteristic of proteins and is essential for their structure and function?

Accepted Answer

NH2

Question 5

A person is exposed to radioactive isotopes during a medical scan. Which of the following is a potential risk associated with isotopes in the human body?

Accepted Answer

They may cause cellular damage due to radiation.

Question 6

Which of the following organic compounds is primarily responsible for storing genetic information in cells?

Accepted Answer

Nucleic acids

Question 7

Which equation correctly represents the dissociation of water and its relevance to pH in the human body?

Accepted Answer

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

Question 8

Which of the following is a correct example of a carbohydrate and its function in the human body?

Accepted Answer

Glycogen – stores glucose/energy in the liver

Question 9

A patient has a fever, and their body temperature is elevated. Which property of water helps the body resist rapid temperature changes?

Accepted Answer

High heat capacity

Question 10

Which of the following best explains why lipids are important in the human body?

Accepted Answer

They are the main component of cell membranes and store energy long-term.

Question 11

Which of the following is a correct match between an organic compound and its functional group?

Accepted Answer

Lipids – COOH

Question 12

A scientist is analyzing a molecule with the formula $$C_6H_{12}O_6$. Which class of organic compound does this molecule belong to?

Accepted Answer

Carbohydrate

Question 13

Which of the following best describes the role of covalent bonds in organic molecules within the human body?

Accepted Answer

They provide stability and structure to macromolecules.

Question 14

Which of the following is a correct example of a protein and its function?

Accepted Answer

Hemoglobin – transports oxygen in the blood

Question 15

A patient is suffering from alkalosis. Which of the following would most likely help restore their blood pH to normal?

Accepted Answer

Increasing the concentration of $$H^+$$ ions in the blood

Question 16

Which of the following is a correct statement about the importance of pH control in the human body?

Accepted Answer

Proper pH control is essential for maintaining enzyme activity and metabolic processes.

Question 17

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

Accepted Answer

It is a carbohydrate that stores glucose/energy in the liver.

Question 18

Which of the following is a correct example of a monosaccharide and its function?

Accepted Answer

Glucose – immediate energy source for cell respiration

Question 19

Which of the following best explains why water's high heat capacity is important for living cells?

Accepted Answer

It helps maintain stable internal temperatures despite external fluctuations.

Question 20

A medical student is asked to identify the main classes of carbohydrates. Which of the following is correct?

Accepted Answer

Mono/Di/Polysaccharides

Chemistry of the Body: Foundations for Anatomy & Physiology

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