principles of homeostasis

Question 1

importance of maintaining stable core temp

Answer 1

temp too high
h bonds in tertiary structure break
enzymes denature active site changes shape so substrate cant bind
so fewer enzyme substrate complexes
temp to low not enough KE so fewer ESC

Question 2

what is homeostasis

Answer 2

maintaining stable internal envi within restricted limits
by physiological control system

Question 3

importance of stable blood ph

Answer 3

above below optimum
ionic h tertiary bonds break
enzymes denature and active site changes shape and substrate cant bind
fewer ESC

Question 4

too low BGC

Answer 4

hypoglycaemia
not enough glucose for respiration
less atp produced
active transport cant happen cell death

Question 5

too high BGC

Answer 5

hyperglycaemia
wp of blood decreases
water lost from tissues via osmosis
kidneys cant absorb all glucose
more water lost to urine causing dehydration

Question 6

negative feedback

Answer 6

receptors detect change from optimum
effects responds to counteract change
returning levels back to optimum

Question 7

importance of conditions being controlled by separate mechanisms involving negative feedback

Answer 7

departures from Dif directions from original can all be controlled
giving a greater degree of control

Question 8

positive feedback

Answer 8

receptors detect change from normal
effectors respond to amplify change
producing greater deviation from normal