bioenergetics Flashcards
what is catabolism and anabolism
catabolism is the break down of molecules
metabolism is the building up of molecules
exergonic reactions are…
spontaneous reactions where energy is released to the surroundings.
endergonic reactions are…
non spontaneous reactions that require energy.
glycolysis takes place in…
the cytoplasm
Krebs cycle occurs in…
the mitochondrial matrix
oxidative phosphorylation occurs in …
the mitochondrial cristae (membrane)
first law of thermodynamics
law of conservation of energy- energy cannot be created or destroyed.
second law of thermodynamics
No natural process can occur unless it is accompanied by increase in entropy (disorder) of the universe.
RBC have …% NaCl
0.9
which molecules are amphiphatic
lipids as they are both hydrophobic and hydrophilic
what happens if IV is given with pure water
eventually the red blood cells will swell and cause hemolysis (death of roc)
What happens when IV saline is given at 3% NaCl
more intracellular fluid moves out of cells into the extracellular space this reduces brain water and increases effective circulating volume
Formation of bonds is 1.
Breaking bonds is 2.
- Endergonic - anabolic, uses energy so not spontaneous
- Exergonic - catabolic, releases energy so spontaneous
What are the purines 1.
And pyramidines 2.
- A and G double ring G-C triple bond
- C T U single ring A-T/A-U double bond
