Question 1

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

Accepted Answer

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

Question 2

A runner uses stored energy in their muscles to sprint. Which type of energy transformation is primarily occurring?

Accepted Answer

Potential energy is being converted to kinetic energy.

Question 3

Which of the following is NOT a form of energy described in the study materials?

Accepted Answer

Thermal energy

Question 4

Which equation correctly represents the conservation of energy in a closed system?

Accepted Answer

$$E_{initial} = E_{final}$$

Question 5

Which statement best explains why chemical energy is important for physiological processes?

Accepted Answer

Chemical energy stored in molecules like ATP is released to power cellular activities.

Question 6

If a person eats food containing glucose, which process converts the chemical energy in glucose into usable energy for the body?

Accepted Answer

Cellular respiration

Question 7

Which of the following best describes an atom?

Accepted Answer

An atom is the smallest unit of matter that retains the properties of an element.

Question 8

Which of the following is a correct example of mechanical energy in the human body?

Accepted Answer

The contraction of skeletal muscles to move a limb

Question 9

A chemical reaction in the body releases energy. Which law of thermodynamics does this illustrate?

Accepted Answer

First law: Energy cannot be created or destroyed, only transformed.

Question 10

Which of the following best describes the role of ATP in cellular energy transfer?

Accepted Answer

ATP acts as the primary energy currency, transferring chemical energy to power cellular work.

Question 11

Which process is responsible for converting chemical energy from food into mechanical energy for movement?

Accepted Answer

Cellular respiration followed by muscle contraction

Question 12

Which of the following is a correct statement about elements and compounds?

Accepted Answer

Compounds are made of atoms of different elements chemically bonded together.

Question 13

Which equation represents the breakdown of ATP to release energy?

Accepted Answer

$$ATP \rightarrow ADP + P_i + energy$$

Question 14

A patient is exposed to sunlight, which is absorbed by the skin and converted to vitamin D. Which form of energy is primarily involved in this process?

Accepted Answer

Radiant energy

Question 15

Which of the following is an example of potential energy in the human body?

Accepted Answer

Glucose molecules stored in the liver

Question 16

Which of the following statements about energy conversion in the body is correct?

Accepted Answer

Energy is converted from one form to another, such as chemical energy to mechanical energy, but is never created or destroyed.

Question 17

Which of the following best describes the relationship between atoms and molecules?

Accepted Answer

Molecules are formed when two or more atoms bond together.

Question 18

Which of the following is a correct example of chemical energy being used in the body?

Accepted Answer

The breakdown of glucose to produce ATP

Question 19

Which equation best represents the conversion of glucose to energy in cellular respiration?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + energy$$

Question 20

A person lifts a heavy object, using energy stored in their muscles. Which sequence of energy transformations occurs?

Accepted Answer

Chemical energy $$\rightarrow$$ mechanical energy $$\rightarrow$$ potential energy

Chemistry Comes Alive: Foundations for Anatomy & Physiology

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