BIO 245 KLESATH NCSU EXAM 1 PRACTICE
EVALUATION 2026 QUESTION BANK FULL
SOLUTION SET
◉ How many organ systems are in the human body?
Answer: 11
◉ Function of the integumentary system
Answer: Protection and temperature regulation.
◉ Function of the skeletal system
Answer: Support, protection, mineral storage, blood cell production.
◉ Function of the muscular system
Answer: Movement and heat production.
◉ Function of the nervous system
Answer: Fast control and communication.
◉ Function of the endocrine system
Answer: Slow, long-lasting control via hormones.
,◉ Function of the cardiovascular system
Answer: Transport of oxygen, nutrients, and wastes.
◉ Function of the lymphatic/immune system
Answer: Defense and fluid return.
◉ Function of the respiratory system
Answer: Oxygen intake and carbon dioxide removal.
◉ Function of the urinary system
Answer: Waste removal and water/salt balance.
◉ Function of the digestive system
Answer: Break down food and absorb nutrients.
◉ Function of the reproductive system
Answer: Produce offspring.
◉ What is homeostasis?
Answer: Maintaining stable internal conditions despite external
changes.
, ◉ Why is homeostasis important?
Answer: Cells only function properly within narrow ranges.
◉ Three parts of a homeostatic system
Answer: Receptor, control center, effector.
◉ What does a receptor do?
Answer: Detects changes (stimuli).
◉ What does the control center do?
Answer: Compares to set point and decides response.
◉ What does an effector do?
Answer: Produces the response to restore balance.
◉ Negative feedback definition
Answer: Response reverses the original stimulus.
◉ Example of negative feedback
Answer: Sweating when hot.
EVALUATION 2026 QUESTION BANK FULL
SOLUTION SET
◉ How many organ systems are in the human body?
Answer: 11
◉ Function of the integumentary system
Answer: Protection and temperature regulation.
◉ Function of the skeletal system
Answer: Support, protection, mineral storage, blood cell production.
◉ Function of the muscular system
Answer: Movement and heat production.
◉ Function of the nervous system
Answer: Fast control and communication.
◉ Function of the endocrine system
Answer: Slow, long-lasting control via hormones.
,◉ Function of the cardiovascular system
Answer: Transport of oxygen, nutrients, and wastes.
◉ Function of the lymphatic/immune system
Answer: Defense and fluid return.
◉ Function of the respiratory system
Answer: Oxygen intake and carbon dioxide removal.
◉ Function of the urinary system
Answer: Waste removal and water/salt balance.
◉ Function of the digestive system
Answer: Break down food and absorb nutrients.
◉ Function of the reproductive system
Answer: Produce offspring.
◉ What is homeostasis?
Answer: Maintaining stable internal conditions despite external
changes.
, ◉ Why is homeostasis important?
Answer: Cells only function properly within narrow ranges.
◉ Three parts of a homeostatic system
Answer: Receptor, control center, effector.
◉ What does a receptor do?
Answer: Detects changes (stimuli).
◉ What does the control center do?
Answer: Compares to set point and decides response.
◉ What does an effector do?
Answer: Produces the response to restore balance.
◉ Negative feedback definition
Answer: Response reverses the original stimulus.
◉ Example of negative feedback
Answer: Sweating when hot.
