This Human Body Systems Quiz for Grade 11 includes multiple choice questions with answers and teacher-style explanations to support high school biology learning.
Human Body Systems Quiz for Grade 11
Practice human body systems with this Grade 11 biology quiz. 20 MCQs with answers and clear explanations for U.S. high school students.
Human Body Multiple Choice Questions with Answers
Results
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#1. Which organ is responsible for gas exchange in the lungs?
Explanation: Alveoli are tiny air sacs where oxygen and carbon dioxide are exchanged.
#2. Which hormone controls growth during adolescence?
Explanation: Growth hormone regulates growth of bones and muscles during teenage years.
#3. Which organ filters waste products from the blood?
Explanation: Kidneys filter blood to remove wastes and produce urine.
#4. Which system includes the skin, hair, and nails?
Explanation: The integumentary system protects the body and helps regulate temperature.
#5. Which body system is responsible for pumping blood throughout the body?
Explanation: The circulatory system uses the heart and blood vessels to transport oxygen, nutrients, and waste materials.
#6. Which organ produces insulin?
Explanation: The pancreas produces insulin, which regulates blood sugar levels.
#7. Which organ is the main control center of the nervous system?
Explanation: The brain controls thoughts, movement, memory, and overall body coordination.
#8. Which system controls body activities using hormones?
Explanation: The endocrine system releases hormones that regulate growth, metabolism, and reproduction.
#9. Which body system provides structure and protection to organs?
Explanation: The skeletal system supports the body and protects organs like the brain and heart.
#10. Which body system is responsible for sensing and responding to stimuli?
Explanation: The nervous system detects stimuli and sends signals for quick responses.
#11. Which system works with the skeletal system to allow movement?
Explanation: Muscles contract and relax to move bones and body parts.
#12. Which system protects the body from harmful pathogens?
Explanation: The immune system defends the body against bacteria, viruses, and other harmful organisms.
#13. Which body system is responsible for producing reproductive cells?
Explanation: The reproductive system produces sex cells and hormones that are essential for human reproduction.
#14. Which part of the brain controls balance and coordination?
Explanation: The cerebellum helps maintain balance, posture, and coordinated movements.
#15. Which system transports nutrients and hormones to cells?
Explanation: Blood carries nutrients, oxygen, and hormones to body cells.
#16. Which system helps maintain fluid balance and absorb fats?
Explanation: The lymphatic system helps with fluid balance and fat absorption.
#17. Which system removes liquid and solid wastes from the body?
Explanation: The excretory system removes waste products to maintain internal balance.
#18. Which organ is primarily responsible for digestion of food?
Explanation: The stomach breaks down food using acids and enzymes.
#19. Which blood cells help fight infections?
Explanation: White blood cells protect the body against infections and diseases.
#20. Which system allows oxygen to enter the body and carbon dioxide to leave?
Explanation: The respiratory system enables breathing and gas exchange in the lungs.
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