9- homeostasis

Question 1

homeostasis

Answer 1

The maintenance of a steady internal environment to maintain optimum conditions for function, in response to internal and external changes.

Question 2

importance of maintaining temperature

Answer 2

• Metabolic rate: Temperature affects the speed of chemical reactions in the body.
• Enzyme activity: Too high or too low temperatures can denature enzymes.
• Physiological processes:
Temperature regulation is crucial for processes like muscle function and brain activity.

Question 3

importance of maintaining pH

Answer 3

• Cellular metabolism: Correct pH is vital for cellular respiration and energy production.
• Optimal enzyme function: Enzymes require a specific pH range to function efficiently.
• Acid-base balance: Prevents acidosis or alkalosis, conditions that can disturb metabolic processes.
• Protein structure: pH affects protein conformation and stability, essential for bodily functions.

Question 4

importance of maintaining water potential

Answer 4

• Cellular function: Water potential affects cell turgor and function.
• Nutrient transport: Water acts as a solvent and medium for nutrient transport.
• Waste removal: Water is necessary for the excretion of waste products.
• Blood pressure and volume: Water potential impacts blood circulation and pressure.

Question 5

negative feedback

Answer 5

• A change stimulates a response that reverses the change back towards the norm.
• The output is decreased or inhibited.

Question 6

positive feedback

Answer 6

• A change stimulates a response that causes further change away from the norm.
• The output is amplified or magnified.