2.1 Flashcards
(11 cards)
Metabolic pathway
Controlled pathways of enzyme catalysed reactions within a cell
(Reversible, irreversible, alternative routes)
Anabolic
Building up large molecules from small molecules and requires energy
Catabolic
Breakdown of large molecules into smaller molecules and releases energy
Proteins in the membrane
-pores (allowing molecules pass through)
-pumps (allows molecules to pass but requires energy)
-enzymes (catalysing chemical reactions)
Metabolic pathways are controlled by the__________
Presence or absence of key enzymes
What happens a substrate binds to the active site
The active site will alter its shape to fit the substrate
What has a high affinity?
Substrates (allowing them to bind easily)
What has a lower affinity to the active site?
Product molecules (allowing them to leave easier)
Competitive inhibition
Inhibitor bind at the active site preventing the substrate from binding
Non competitive
Binds away from the active site, changing the shape of the enzyme
Feedback inhibition
End product reaches critical condition
