Page 1 of 92
BIO 253 – Hondros College Final Exam QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
EXAM COVERAGE
Cardiovascular
• Heart chambers: RA, RV, LA, LV
• SA node = pacemaker
• Arteries carry blood away from heart
Blood
• RBCs carry oxygen via hemoglobin
• WBCs fight infection
• Platelets clot blood
Respiratory
• Alveoli = gas exchange
• Diaphragm contraction = inhalation
Digestive
• Stomach: protein digestion
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• Small intestine: nutrient absorption
Urinary
• Kidney filters blood
• Nephron = functional unit
Endocrine
• Insulin lowers glucose
• Glucagon raises glucose
Reproductive
• Testosterone → male traits
• Estrogen/progesterone → female cycle
BIO 253 Practice Exam
Batch 1 (Questions 1–50)
1
Which chamber of the heart pumps oxygenated blood to the body?
A. Right atrium
B. Right ventricle
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C. Left atrium
D. Left ventricle
Answer: D
Rationale: The left ventricle pumps oxygenated blood through the aorta to the systemic
circulation.
2
Which blood cells transport oxygen?
A. Platelets
B. Red blood cells
C. Neutrophils
D. Lymphocytes
Answer: B
3
Which organ is responsible for gas exchange?
A. Trachea
B. Bronchi
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C. Lungs
D. Larynx
Answer: C
4
Which structure separates the thoracic cavity from the abdominal cavity?
A. Pleura
B. Diaphragm
C. Bronchi
D. Pericardium
Answer: B
5
Which organ produces bile?
A. Pancreas
B. Liver
C. Stomach
D. Gallbladder
BIO 253 – Hondros College Final Exam QUESTIONS AND
CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR –
JUST RELEASED
EXAM COVERAGE
Cardiovascular
• Heart chambers: RA, RV, LA, LV
• SA node = pacemaker
• Arteries carry blood away from heart
Blood
• RBCs carry oxygen via hemoglobin
• WBCs fight infection
• Platelets clot blood
Respiratory
• Alveoli = gas exchange
• Diaphragm contraction = inhalation
Digestive
• Stomach: protein digestion
, Page 2 of 92
• Small intestine: nutrient absorption
Urinary
• Kidney filters blood
• Nephron = functional unit
Endocrine
• Insulin lowers glucose
• Glucagon raises glucose
Reproductive
• Testosterone → male traits
• Estrogen/progesterone → female cycle
BIO 253 Practice Exam
Batch 1 (Questions 1–50)
1
Which chamber of the heart pumps oxygenated blood to the body?
A. Right atrium
B. Right ventricle
, Page 3 of 92
C. Left atrium
D. Left ventricle
Answer: D
Rationale: The left ventricle pumps oxygenated blood through the aorta to the systemic
circulation.
2
Which blood cells transport oxygen?
A. Platelets
B. Red blood cells
C. Neutrophils
D. Lymphocytes
Answer: B
3
Which organ is responsible for gas exchange?
A. Trachea
B. Bronchi
, Page 4 of 92
C. Lungs
D. Larynx
Answer: C
4
Which structure separates the thoracic cavity from the abdominal cavity?
A. Pleura
B. Diaphragm
C. Bronchi
D. Pericardium
Answer: B
5
Which organ produces bile?
A. Pancreas
B. Liver
C. Stomach
D. Gallbladder
