2026 BIOD 101 Module 5 Final Exam – 2026 | Portage Learning | Complete
Verified Q&As + Review Guide
The final 100-question segment for Module 5. This 2026 update dives into Microscopic
Anatomy, Endocrine Feedback Loops, Electrolyte Balance, Neural Signal
Propagation, and Cardiovascular Dynamics. Essential for students preparing for the
Portage Biology Final or nursing entrance exams.
1. Which level of organization is higher than the "Tissue" level but lower than the
"Organ System" level?
A. Cell
B. Molecule
C. Organ
D. Organism
Rationale: Multiple tissues working together form an Organ (e.g., the heart), which then
contributes to a larger system.
2. Homeostasis is best defined as:
A. The ability to reproduce.
B. Maintaining a stable internal environment despite external changes.
C. The sum of all chemical reactions.
D. The growth of new cells.
Rationale: Homeostasis is the "steady state" the body maintains for variables like
temperature and pH.
3. Which type of tissue covers body surfaces and lines internal cavities?
A. Connective
B. Muscle
C. Epithelial
D. Nervous
Rationale: Epithelial tissue serves as a protective barrier and is found in the skin and
organ linings.
4. Nervous tissue is specialized for:
A. Storing fat.
B. Rapid transmission of electrical impulses.
C. Contraction and movement.
D. Binding organs together.
,Rationale: Neurons transmit signals to allow for communication between the brain and
the rest of the body.
5. The "Master Gland" of the Endocrine System is the:
A. Thyroid
B. Adrenal
C. Pituitary
D. Pancreas
Rationale: The Pituitary gland releases hormones that regulate the activity of many
other endocrine glands.
6. Which blood vessels carry blood AWAY from the heart?
A. Arteries
B. Veins
C. Capillaries
D. Venules
Rationale: Arteries (A for Away) carry oxygenated blood to the body (except the
pulmonary artery).
7. In the Respiratory System, the actual exchange of gases occurs in the:
A. Bronchi
B. Trachea
C. Alveoli
D. Larynx
Rationale: Alveoli are tiny air sacs where oxygen enters the blood and CO2 is
removed.
8. The primary function of the Small Intestine is:
A. Mechanical digestion.
B. Chemical digestion and nutrient absorption.
C. Water reabsorption.
D. Bile production.
Rationale: The Small Intestine uses villi to absorb nutrients into the bloodstream.
9. Which system is responsible for filtering nitrogenous waste from the blood?
A. Digestive
B. Urinary (Excretory)
C. Lymphatic
D. Integumentary
Rationale: The kidneys in the Urinary system filter blood to produce urine and
maintain electrolyte balance.
, 10. Skeletal muscle is characterized as:
A. Involuntary and non-striated.
B. Involuntary and striated.
C. Voluntary and striated.
D. Voluntary and non-striated.
Rationale: Skeletal muscle is attached to bone and is under conscious (voluntary)
control.
11. Which part of the heart pumps oxygenated blood to the entire body?
A. Right Atrium
B. Right Ventricle
C. Left Atrium
D. Left Ventricle
Rationale: The Left Ventricle has the thickest muscular wall to pump blood through the
aorta to the systemic circuit.
12. "Negative Feedback" loops work to:
A. Increase a stimulus.
B. Oppose a stimulus to restore a set point.
C. Stop a heartbeat.
D. Speed up labor contractions.
Rationale: Negative feedback (like shivering when cold) reverses a trend to maintain
homeostasis.
13. Bile is produced in the _____ and stored in the _____.
A. Pancreas; Liver
B. Liver; Gallbladder
C. Stomach; Pancreas
D. Small Intestine; Liver
Rationale: The Liver manufactures bile to emulsify fats, while the Gallbladder stores it.
14. The Integumentary System includes:
A. Brain and Nerves
B. Skin, Hair, and Nails
C. Muscles and Tendons
D. Hormones and Glands
Rationale: The Integumentary system protects the body from injury and infection.
15. The Central Nervous System (CNS) consists of:
A. Cranial nerves.
B. Brain and Spinal Cord.
Verified Q&As + Review Guide
The final 100-question segment for Module 5. This 2026 update dives into Microscopic
Anatomy, Endocrine Feedback Loops, Electrolyte Balance, Neural Signal
Propagation, and Cardiovascular Dynamics. Essential for students preparing for the
Portage Biology Final or nursing entrance exams.
1. Which level of organization is higher than the "Tissue" level but lower than the
"Organ System" level?
A. Cell
B. Molecule
C. Organ
D. Organism
Rationale: Multiple tissues working together form an Organ (e.g., the heart), which then
contributes to a larger system.
2. Homeostasis is best defined as:
A. The ability to reproduce.
B. Maintaining a stable internal environment despite external changes.
C. The sum of all chemical reactions.
D. The growth of new cells.
Rationale: Homeostasis is the "steady state" the body maintains for variables like
temperature and pH.
3. Which type of tissue covers body surfaces and lines internal cavities?
A. Connective
B. Muscle
C. Epithelial
D. Nervous
Rationale: Epithelial tissue serves as a protective barrier and is found in the skin and
organ linings.
4. Nervous tissue is specialized for:
A. Storing fat.
B. Rapid transmission of electrical impulses.
C. Contraction and movement.
D. Binding organs together.
,Rationale: Neurons transmit signals to allow for communication between the brain and
the rest of the body.
5. The "Master Gland" of the Endocrine System is the:
A. Thyroid
B. Adrenal
C. Pituitary
D. Pancreas
Rationale: The Pituitary gland releases hormones that regulate the activity of many
other endocrine glands.
6. Which blood vessels carry blood AWAY from the heart?
A. Arteries
B. Veins
C. Capillaries
D. Venules
Rationale: Arteries (A for Away) carry oxygenated blood to the body (except the
pulmonary artery).
7. In the Respiratory System, the actual exchange of gases occurs in the:
A. Bronchi
B. Trachea
C. Alveoli
D. Larynx
Rationale: Alveoli are tiny air sacs where oxygen enters the blood and CO2 is
removed.
8. The primary function of the Small Intestine is:
A. Mechanical digestion.
B. Chemical digestion and nutrient absorption.
C. Water reabsorption.
D. Bile production.
Rationale: The Small Intestine uses villi to absorb nutrients into the bloodstream.
9. Which system is responsible for filtering nitrogenous waste from the blood?
A. Digestive
B. Urinary (Excretory)
C. Lymphatic
D. Integumentary
Rationale: The kidneys in the Urinary system filter blood to produce urine and
maintain electrolyte balance.
, 10. Skeletal muscle is characterized as:
A. Involuntary and non-striated.
B. Involuntary and striated.
C. Voluntary and striated.
D. Voluntary and non-striated.
Rationale: Skeletal muscle is attached to bone and is under conscious (voluntary)
control.
11. Which part of the heart pumps oxygenated blood to the entire body?
A. Right Atrium
B. Right Ventricle
C. Left Atrium
D. Left Ventricle
Rationale: The Left Ventricle has the thickest muscular wall to pump blood through the
aorta to the systemic circuit.
12. "Negative Feedback" loops work to:
A. Increase a stimulus.
B. Oppose a stimulus to restore a set point.
C. Stop a heartbeat.
D. Speed up labor contractions.
Rationale: Negative feedback (like shivering when cold) reverses a trend to maintain
homeostasis.
13. Bile is produced in the _____ and stored in the _____.
A. Pancreas; Liver
B. Liver; Gallbladder
C. Stomach; Pancreas
D. Small Intestine; Liver
Rationale: The Liver manufactures bile to emulsify fats, while the Gallbladder stores it.
14. The Integumentary System includes:
A. Brain and Nerves
B. Skin, Hair, and Nails
C. Muscles and Tendons
D. Hormones and Glands
Rationale: The Integumentary system protects the body from injury and infection.
15. The Central Nervous System (CNS) consists of:
A. Cranial nerves.
B. Brain and Spinal Cord.
