BIOLOGY..take a sneak please?

Question

For each molecule of glucose entering glycolysis, there is a net gain of
ok this is either six ATP molecules, 4 ATP molecules, 3 ATP molecules, or 2...i don't remember, it's a big process... i really cant figure this one out..

thank you! i think you start with 3 it doubles to 6 then something happens with 4, n i thought it turned out to be 2, but too many #'s confuse me, thx!

Answer 1

There is a net gain of 2 ATP.

Actually, you get 4 ATP, but you spend two in the process, making the net gain 2 ATP.

Answer 2

For 1 molecule of glucose, u start off with 2 ATPs and ended up with 4 ATPs as DHAP will eventually convert to GAP and therefore there's 2 DHAP. Don't forget about NADH that is also produced which gives you 2.5 moles of ATP. so 2 NADH gives you 5 ATPs. IN total, there's 9 ATPs produced. But since 2 is invested in the beginning, the net yield is 7 ATP for each glucose molecule.THis is for aerobic conditions.

For anaerobic conditions, the 2 NADH is being used to convert pyruvate to lactate, therefore net yield is only 4 ATPs.

Answer 3

net gain of 2. glycolysis produces 4 molecules of ATP, but two are used in producing these for giving a net gain of 2.

Answer 4

If I remember correctly, glycolysis generates four ATP per glucose molecule.