Homeostasis

Question 1

Type 1

Answer 1

insulin dependant - body unable to produce insulin

autoimmune response body attacks own B cells of the islets of Langerhans

Question 2

Type 2

Answer 2

insulin independent - loss responsiveness to insulin by glycoproteins or inadequate supply of insulin from pancreas

Question 3

importance of homeostasis ( 3 factors )

Answer 3

1) ENZYMES- control biochemical reactions within cells/ channel proteins- sensitive changes PH/ TEMP.
2) changes to water pt of blood and tissue fluid cause cells shrink expand- osmosis cells unable function normally. maintenance content blood glucose conc essential ensuring constant water pt. constant blood glucose conc = reliable source glucose for respiration

3)

Question 4

hypertonic

Answer 4

water moves out cell shrinks high pt

Question 5

hypotonic

Answer 5

water moves in lower water pt inside

Question 6

how can insulin intake be measured in type I diabetes

Answer 6

biosensors

Question 7

How type I diabetes can be controlled

Answer 7

injections of insulin- dose matched exactly to glucose intake. too much–> unconsciousness

Question 8

How type II diabetes can be controlled

Answer 8

regulating intake of carbohydrates match to amount exercise taken. Supplemented

• injections insulin
• or drugs which stimulate insulin production
• or drugs slow down rate body absorbs glucose from intestine

Question 9

when is the second messenger model used

Answer 9

by adrenaline and glucagon in regulation of blood glucose