Glycolysis - Mark Flashcards
what is glucose
two 3C units and ATP
what two things can metabolic pathways be categorised as
anabolic or catabolic
what is catabolism
degradative pathways
usually energy- yielding
converge to a few end products
what is anabolism
biosynthetic pathways
energy requiring
diverge to synthesise many biomolecules
where does energy for anabolism come from
solar energy - photoautotrophs
catabolism - heterotrophs
what is the energy currency of the cell
Adenosine Triphosphate(ATP)
how is ATP produced
light energy (phototrophs) or catabolism (heterotrophs)
what is ATP for
• Used to drive biosynthetic reactions (anabolism), motility etc
is catabolism oxidative or reductive
oxidative. Substrates lose reducing equivalents, usually H- ions (H+ ions plus electrons) or NAD+ collects electrons released in catabolism
is anabolism oxidative or reductive
reductive. Substrates gain reducing equivalents
NAD (P) H provides the electrons for anabolic processes
redox
NAD (P)+ / NAD (P) H can be viewed as a redox energy currency
where is potential energy in glucose contained?
reduced hydrocarbon bonds
how is the potential energy in glucose used
must be oxidised to CO2 and water
how does the potential energy in glucose arise in the blood
breakdown of poly- or di-saccharides
synthesis from non-carbohydrate sources
where are the enzymes involved in glycolysis located
cytosol
