22.09.2023 homeostasis L1

Question 1

homeostasis

Answer 1

everything staying normal, in durations small compared to a human life

Question 2

our job as physicians

Answer 2

is to maintain homeostasis in patients, and help them get as close to normal as possible if there is a departure

Question 3

2 homeostasis categories

Answer 3

• avoiding change caused by interal processes inherent in body
• avoiding change by environmental factors

Question 4

common diseases due to homeostasis failure

Answer 4

• infection
• diabetes melitus
• hypertension
• cancer
• alzheimer’s disease

Question 5

what is second law of thermodynamics

Answer 5

organised things become disorganised over time

Question 6

what does second law mean for the human body

Answer 6

it has to expend energy just to maintain its organisation

Question 7

reactions that go uphill are linked with

Answer 7

reactions that go downhill

Question 8

if oxidising sugar causes fire, why are we not on fire?

Answer 8

as glucose in processed in a series of small steps, allowing the recovery of small amounts of energy

Question 9

typical energy change in metabolic reactions

Answer 9

0.2eV

Question 10

metabolic reactions driven by

Answer 10

0.3eV from ATP

Question 11

oxidising glucose releases

Answer 11

29eV

Question 12

why is metabolism complicated

Answer 12

because it has to be in small steps which make lots of ATP molecules out of high energy molecules in food