Question 1

Which of the following best describes the correct order of levels of organization in the human body, from smallest to largest?

Accepted Answer

atom $\rightarrow$ molecule $\rightarrow$ cell $\rightarrow$ tissue $\rightarrow$ organ $\rightarrow$ organ system $\rightarrow$ organism

Question 2

A patient is experiencing difficulty breathing and low oxygen levels. Which organ system is primarily responsible for gas exchange in the body?

Accepted Answer

Respiratory system

Question 3

Which of the following is an example of negative feedback in homeostasis?

Accepted Answer

Sweating to cool the body when temperature rises

Question 4

If a cell is placed in a hypotonic solution, what will most likely happen to the cell?

Accepted Answer

The cell will swell and may burst due to water entering

Question 5

Which of the following best describes the role of ATP in cellular processes?

Accepted Answer

ATP provides the metabolic energy required for active transport

Question 6

Which of the following statements about acids and bases is correct?

Accepted Answer

Acids release H$^+$ ions, while bases bind H$^+$ or release OH$^-$ ions

Question 7

A solution has a pH of 5. Which of the following best describes this solution?

Accepted Answer

It is acidic

Question 8

Which of the following is a function of the nervous system?

Accepted Answer

Coordinates body activities with electrical signals and processes sensory information

Question 9

During protein synthesis, what is the role of mRNA?

Accepted Answer

It provides the template for transcription from DNA

Question 10

Which of the following best describes facilitated diffusion?

Accepted Answer

Movement of molecules from high to low concentration through a protein channel, without ATP

Question 11

Which of the following is true about DNA replication?

Accepted Answer

It duplicates genetic material during interphase before cell division

Question 12

A cell is observed to engulf bacteria by surrounding them with its plasma membrane. What process is this an example of?

Accepted Answer

Phagocytosis

Question 13

Which of the following organic molecules is primarily responsible for storing genetic information?

Accepted Answer

Nucleic acids

Question 14

Which organ system is responsible for removing metabolic waste products from the blood and maintaining water and electrolyte balance?

Accepted Answer

Urinary system

Question 15

Which of the following best describes the difference between covalent and ionic bonds?

Accepted Answer

Covalent bonds involve sharing electrons; ionic bonds involve transfer of electrons

Question 16

Which phase of mitosis is characterized by chromosomes aligning at the center of the cell?

Accepted Answer

Metaphase

Question 17

A cell membrane is permeable to K$^+$ ions but not to Na$^+$ ions. If the concentration of K$^+$ is higher inside the cell than outside, what will happen?

Accepted Answer

K$^+$ ions will move out of the cell

Question 18

Which of the following is a property of water that is important for maintaining homeostasis in the human body?

Accepted Answer

High heat capacity

Question 19

Which of the following best describes the function of enzymes in biological systems?

Accepted Answer

Enzymes act as biological catalysts to speed up chemical reactions

Question 20

Which of the following statements about transcription is correct?

Accepted Answer

Transcription is the process of copying DNA into mRNA

Anatomy & Physiology Study Guide: Chapters 1–4

Study Guide - Practice Questions

Study Guide - Flashcards