Respiration/ATP A2 Flashcards
ATP ->
ADP + Pi
why is ATP useful
released in small suitable amounts broken down in one step makes energy available rapidly makes substances more reactive/lower activation energy by phosphorylating can be reformed
why is respiration affected by temperature
enzymes can be affected
some things we use ATP for
active transport
metabolic processes
movement
why is ATP made in respiration as well as photosynthesis
can’t always photosynthesis e.g. in the dark
some tissues cant photosynthesise
ATP can’t move between cells or stored
plants use more ATP than produced in photosynthesis
what happens in oxidation
lose electrons, lose H, gain O2
what happens in reduction
gain electrons, gain H, lose O2
where does glycolysis take place
cytoplasm
steps in glycolysis
Pi added to glucose (using 2 ATP)
glucose splits into 2 triose phosphate (3C)
TP oxidised NAD reduced
TP made into pyruvate releasing 2ATP
what molecules are made in glycolysis
ATP NADH and pyruvate
what molecules are needed for glycolysis
ATP, glucose, and NAD
where does link reaction take place
matrix of mitochondria
steps in link reaction
pyruvate is oxidised NAD reduced
pyruvate loses CO2 becomes 2C acetyl group
2C acetate joins coenzyme A makes acetyl coenzyme A
products from link reaction
CO2 NADH, acetyl coenzyme A
where does krebs cycle take place
matrix of mitochondria
