INTRO to homeostasis

Question 1

define homeostasis

Answer 1

physiological control systems which maintain a stable internal environment

Question 2

how does temperature affect metabolism?

Answer 2

• metabolism is controlled by enzymes
• increasing temperature too far from their optimum temperature causes enzymes to denature
• decreasing temperature too far causes the rate of reaction to decrease

Question 3

how does pH affect metabolism?

Answer 3

• metabolism is controlled by enzymes which have an optimum pH
• too much change causes the rate of reaction to decrease

Question 4

how does glucose affect metabolism?

Answer 4

a minimum amount of glucose is needed as a respiratory substrate

• too much glucose decreases the water potential of the blood causing water to move out of cells by osmosis
• they shrivel