Cell metabolism Flashcards
define cell metabolism
set of processes which derive energy from raw materials from food used for repair, growth and to sustain life
define catabolism
break larger molecules down into smaller ones
define anabolism
synthesise larger molecules from smaller ones
is catabolism OX or RED
oxidative
is anabolism OX or RED
reductive
what are high energy signals
molecules that signal the cell has energy
ATP
NADH
FADH2
what are low energy signals
signal that the cell needs energy
ADP
FAD
NAD
What is the reaction for creatine phosphate
creatine + ATP –> creatine phosphate + ADP
What enzyme catalyses the production of creatine phosphate
creatine kinase
why is creatine phosphate produced
when ATP is high CP made to act as a small store in muscle cells
Why is creatine phosphate useful
sudden fall in ATP reverse reaction occurs to provide short term boost of ATP
Why is creatine kinase a useful clinical marker
if in blood then suspected muscle injury e.g. heart attack (cardiac troponin is better)
How is creatinine produced
breakdown of creatine and creatine phosphate
How can we use creatinine
assess kidney function as excreted via kidneys
tells us about muscle mass as production of creatinine proportional to conc of creatine in muscle
