The combination of amino acids to form a protein: $$n \text{Amino Acids} \rightarrow \text{Protein}$$

Question 1

Which of the following best describes the difference between kinetic and potential energy in the context of human physiology?

Accepted Answer

Kinetic energy is the energy of motion, such as muscle contraction, while potential energy is stored energy, such as in chemical bonds.

Question 2

Which subatomic particle determines the chemical behavior of an atom?

Accepted Answer

Electron

Question 3

A radioactive isotope is used in medical imaging because it emits radiation as it decays. Which property of isotopes allows this application?

Accepted Answer

Isotopes have different numbers of neutrons, which can make them unstable and radioactive.

Question 4

Which of the following best explains why water is considered a polar molecule?

Accepted Answer

Water has an uneven distribution of electrons, resulting in partial positive and negative charges.

Question 5

Which of the following is an example of a synthesis reaction in the human body?

Accepted Answer

The combination of amino acids to form a protein: $$n 	ext{Amino Acids} ightarrow 	ext{Protein}$$

Question 6

Which statement about ATP is correct?

Accepted Answer

ATP stores energy in its phosphate bonds, which is released when ATP is converted to ADP.

Question 7

Which of the following best describes a covalent bond?

Accepted Answer

A bond formed by the sharing of electrons between atoms.

Question 8

A patient is exposed to a radioactive tracer for a PET scan. Which property of the tracer allows it to be detected in the body?

Accepted Answer

It emits radiation as it undergoes atomic decay.

Question 9

Which of the following is a unique property of water that is critical for life?

Accepted Answer

Water can dissolve many substances due to its polarity.

Question 10

Which of the following best describes the function of an enzyme?

Accepted Answer

Enzymes speed up chemical reactions by lowering the activation energy.

Question 11

Which of the following is true regarding the levels of protein structure?

Accepted Answer

Tertiary structure is the overall 3D shape of a single polypeptide chain.

Question 12

Which of the following best explains why ionic bonds form between sodium and chlorine to make table salt?

Accepted Answer

Sodium donates an electron to chlorine, resulting in oppositely charged ions that attract each other.

Question 13

Which of the following is an example of a decomposition reaction?

Accepted Answer

Glycogen is broken down into glucose molecules: $$	ext{Glycogen} ightarrow n 	ext{Glucose}$$

Question 14

Which of the following best describes the importance of DNA in cells?

Accepted Answer

DNA stores the genetic information necessary for protein synthesis.

Question 15

Which of the following statements about the pH scale is correct?

Accepted Answer

A solution with a pH of 7 is neutral.

Question 16

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.

Question 17

Which of the following is a correct statement about inorganic compounds?

Accepted Answer

Inorganic compounds include water, salts, and acids.

Question 18

A patient is suffering from protein denaturation due to high fever. What is the most likely consequence at the molecular level?

Accepted Answer

The protein loses its functional 3D shape, impairing its function.

Question 19

Which of the following best explains why enzymes are specific to their substrates?

Accepted Answer

Enzymes have active sites with unique shapes that fit only specific substrates.

Question 20

Which of the following best describes the difference between organic and inorganic compounds?

Accepted Answer

Organic compounds contain carbon-hydrogen bonds, while inorganic compounds do not.

Chapter 2: Basic Chemistry for Anatomy & Physiology

Study Guide - Practice Questions