BIOS251 Anatomy and Physiology I Final Exam Questions and Answers
and Explanations | Latest Chamberlain
1. Which level of structural organization is composed of two or more different
types of tissues that work together to perform a specific function?
A. Chemical level
B. Cellular level
C. System level
D. Organ level
Answer: D
Explanation: The organ level consists of different types of tissues joined together to
perform specific functions.
2. Which feedback system reverses a change in a controlled condition to
maintain homeostasis?
A. Negative feedback
B. Positive feedback
C. Neutral feedback
D. Amplification feedback
Answer: A
,Explanation: Negative feedback systems reverse a change in a controlled condition,
whereas positive feedback tends to strengthen or reinforce the change.
3. The anatomical term for the ‘groin’ is:
A. Gluteal
B. Popliteal
C. Axillary
D. Inguinal
Answer: D
Explanation: Inguinal refers to the groin area.
4. A plane that divides the body into equal right and left halves is called:
A. Frontal plane
B. Midsagittal plane
C. Transverse plane
D. Parasagittal plane
Answer: B
Explanation: A midsagittal plane passes through the midline and divides the body into
equal right and left sides.
5. Which serous membrane lines the thoracic cavity and covers the lungs?
A. Pericardium
,B. Peritoneum
C. Pleura
D. Synovial membrane
Answer: C
Explanation: The pleura is the serous membrane associated with the lungs and thoracic
cavity.
6. Which type of chemical bond involves the sharing of electrons between
atoms?
A. Ionic bond
B. Van der Waals force
C. Hydrogen bond
D. Covalent bond
Answer: D
Explanation: Covalent bonds are formed when atoms share one or more pairs of valence
electrons.
7. An enzyme acts as a biological catalyst by:
A. Increasing activation energy
B. Lowering activation energy
C. Changing the temperature of the reaction
D. Being consumed in the reaction
, Answer: B
Explanation: Enzymes lower the activation energy required for a chemical reaction to
occur, speeding up the process.
8. Which organelle is known as the ‘powerhouse’ of the cell because it produces
ATP?
A. Lysosome
B. Mitochondrion
C. Golgi complex
D. Ribosome
Answer: B
Explanation: Mitochondria are the sites of aerobic cellular respiration that produce most
of a cell’s ATP.
9. Diffusion of water across a selectively permeable membrane is called:
A. Facilitated diffusion
B. Active transport
C. Osmosis
D. Endocytosis
Answer: C
Explanation: Osmosis is the net movement of water through a selectively permeable
membrane from an area of higher water concentration to lower.
and Explanations | Latest Chamberlain
1. Which level of structural organization is composed of two or more different
types of tissues that work together to perform a specific function?
A. Chemical level
B. Cellular level
C. System level
D. Organ level
Answer: D
Explanation: The organ level consists of different types of tissues joined together to
perform specific functions.
2. Which feedback system reverses a change in a controlled condition to
maintain homeostasis?
A. Negative feedback
B. Positive feedback
C. Neutral feedback
D. Amplification feedback
Answer: A
,Explanation: Negative feedback systems reverse a change in a controlled condition,
whereas positive feedback tends to strengthen or reinforce the change.
3. The anatomical term for the ‘groin’ is:
A. Gluteal
B. Popliteal
C. Axillary
D. Inguinal
Answer: D
Explanation: Inguinal refers to the groin area.
4. A plane that divides the body into equal right and left halves is called:
A. Frontal plane
B. Midsagittal plane
C. Transverse plane
D. Parasagittal plane
Answer: B
Explanation: A midsagittal plane passes through the midline and divides the body into
equal right and left sides.
5. Which serous membrane lines the thoracic cavity and covers the lungs?
A. Pericardium
,B. Peritoneum
C. Pleura
D. Synovial membrane
Answer: C
Explanation: The pleura is the serous membrane associated with the lungs and thoracic
cavity.
6. Which type of chemical bond involves the sharing of electrons between
atoms?
A. Ionic bond
B. Van der Waals force
C. Hydrogen bond
D. Covalent bond
Answer: D
Explanation: Covalent bonds are formed when atoms share one or more pairs of valence
electrons.
7. An enzyme acts as a biological catalyst by:
A. Increasing activation energy
B. Lowering activation energy
C. Changing the temperature of the reaction
D. Being consumed in the reaction
, Answer: B
Explanation: Enzymes lower the activation energy required for a chemical reaction to
occur, speeding up the process.
8. Which organelle is known as the ‘powerhouse’ of the cell because it produces
ATP?
A. Lysosome
B. Mitochondrion
C. Golgi complex
D. Ribosome
Answer: B
Explanation: Mitochondria are the sites of aerobic cellular respiration that produce most
of a cell’s ATP.
9. Diffusion of water across a selectively permeable membrane is called:
A. Facilitated diffusion
B. Active transport
C. Osmosis
D. Endocytosis
Answer: C
Explanation: Osmosis is the net movement of water through a selectively permeable
membrane from an area of higher water concentration to lower.
