5.1.1 Defining Homeostasis

• What is homeostasis in biology?

  Regulation of internal environment
• Non-homeostatic systems actively maintain a constant internal state.

  False
• Sequence the components of a homeostatic system in a feedback loop:

  1️⃣ Receptors detect changes

  2️⃣ Control center processes information

  3️⃣ Effectors carry out response
• What is the key difference between homeostasis and equilibrium?

  Active regulation vs. no change
• Maintaining a stable internal environment ensures optimal conditions for processes like metabolism, growth, and repair
• Homeostasis maintains optimal conditions for the body's functions.

  True
• Homeostasis maintains stable and optimal conditions for the body's functions
• Homeostatic systems require feedback mechanisms
• Match the component of a homeostatic system with its role:

  Receptors ↔️ Detect changes in the environment

  Control Center ↔️ Integrates information from receptors

  Effectors ↔️ Carry out corrective actions
• What is the definition of homeostasis?

  Maintenance of stable conditions
• Why is maintaining a stable internal environment important?

  Optimal cell and tissue function
• Steps in body temperature regulation

  1️⃣ Receptors detect changes in temperature

  2️⃣ Control center (hypothalamus) processes information

  3️⃣ Effectors are signaled to cool or heat the body
• Receptors in the pancreas detect changes in blood glucose levels
• Homeostasis maintains stable and optimal conditions for the body's functions
• Match the characteristic with the system type:

  Maintains a stable internal environment ↔️ Homeostatic

  No feedback mechanisms ↔️ Non-homeostatic
• Equilibrium guarantees stable and optimal internal conditions.

  False
• Why is homeostasis essential for an organism's survival?

  Adaptation to external changes
• What is the basic meaning of homeostasis?

  Regulation of internal conditions
• Non-homeostatic systems actively regulate internal conditions.

  False
• What are the main components of a homeostatic system?

  Receptors, control center, effectors
• Effectors adjust internal conditions to maintain stability
• Match the feature with the correct state:

  Homeostasis ↔️ Active regulation

  Equilibrium ↔️ Passive result
• Homeostasis keeps variables within optimal ranges
• Homeostasis allows organisms to adapt to changes in the external environment.

  True
• Match the condition with its effector response in blood glucose regulation:

  High blood glucose ↔️ Pancreatic beta cells secrete insulin

  Low blood glucose ↔️ Pancreatic alpha cells secrete glucagon
• Feedback loops in homeostasis ensure internal conditions remain within a healthy range.

  True