00:01
Okay, i wanted to answer this question, let's talk about metabolism.
00:04
It says the atp yield for a molecule depends on where it enters glycolysis or the acetic acid cycle.
00:09
The yield can be compared to the net yield of glucose, 30 atp.
00:13
Let me remind the net atp yield of each starting molecule when fully oxidized to carbon dioxide, as soon the glycolysis, the grape cycle, and oxyate for foliation are fully active.
00:24
Okay, so first let's start with the complete oxidation of glucose.
00:27
You're going to start with glucose here.
00:28
Okay and glucose is going to be metabolized and it is going to produce well via glycolysis and it is going to produce two pyrobin molecules one pyruvate and another pyruvate and what is going to happen here in glycolysis well they're going to use one atp here then another atp about here and here are going to produce one adhd another nadh here and then you're going to produce 280ps per side, 180p, 180p, 180p, and 180p.
01:17
Okay, so this is what happens in leconic.
01:19
As you can see here, you have 280ps that are being used and you produce 480p, so 4 minus 2 is equal to plus 280ps.
01:28
Then these 2 pyruid molecules are going to enter mitochondr, and they are going to be converted to acetal coa, each of them and in this process you're going to produce one nadh per side.
01:48
After this, ittacetal quay is going to enter the crep cycle and you're going to produce 3nadh, 1fadh 2 and 180p per side.
02:09
So up to here what has happened you have produced a net of 280ps plus 2naids and here in the crept cycle in this pyrobit oxidation you have produced 3, 6, 7, 8 nadh molecules, 2 fadh 2, and 280ps.
02:39
According to the information given, apparently you are using the following equivalents, where nadh or each nadh is equivalent to 2 .580ps.
02:49
So you have to multiply 8 by 2 .580ps, and this is equal to 280ps.
02:56
And each fadh 2 is equal to, it is equal to 1 .580p.
03:01
So 2 multiplied by 1 .5 is equal to 3.
03:06
And here you have your 280ps, so you have here a total of 2580ps.
03:11
But you are also told you don't have to forget these two molecules here, so you have 280 plus 2 multiplied by 2 .5 is equal to.
03:23
Well, here you have 280ps, you're going to get 2780ps, and then remember that these nadh molecules are produced outside of the mitochondria.
03:33
So they can produce, or these nadh are going to acquire channels in order to get to the oxidative foreration process.
03:41
So depending on which chattel they use, they can produce 1 .580ps or 2 .580ps.
03:47
If you use 2 .550p, then you're producing 52 multiplied by 2 .5.
03:52
This is 5, and you're going to get 3280.
03:54
Okay? but according to the information given, you're producing 3080ps.
03:58
So apparently they are using here 1 .5 because 1 .5 multiplied by 2 is equal to 3 and 27 plus 3 is 30 80ps.
04:09
So this is what is happening here.
04:11
We are using the 1 .5 atp for these nadh molecules in glycolysis.
04:18
Now they say, first the net atp yield from fructose 1 6 bifosphate.
04:26
So fructose 1 6 bifosphate occurs right about like right here after you have used the last atp here okay so practically the net production of 50p instead of being 30 instead of being 30 are gonna be so i'm gonna be 30 minus or well 30 plus 2 okay because remember that you subtracted or these 20 pieces are subtracted from the net atp a atp yield okay but as you are not you're starting here then you're not going to have this this 80p is less so you're going to have 30 plus 2 and this is equal to 32 80 this is when you start with a fructose 1 6 by phosphate the next question this is question number one the next question says net atpg from galateose okay galactose so galactose is also a carbohydide remember and in this galatose is also metabolase is also metabolase is also metabolized via glycolysis, but it is not directly going to start here.
05:34
Okay, in glucose, remember that the first metabolite of glycolysis is the production of glucose 6 phosphate, okay? and this atp is used right here in this first step.
05:50
So what happens with galatose? once you have galactose here, galactose is going to be converted to galactose 1 -phosphate and here you're going to use 1 -80s.
06:07
You're going to use 1 atp here.
06:09
Okay.
06:10
Then this galatod 1 -phosphate is going to be converted to glucose 1 -phosphate and then this glucose 1 -phosphate is going to be converted to glucose 6 -phosphate.
06:25
So practically what you have done here is just a well as you can see here galatose enters at the level of glucose 6 -phosphate okay and then everything occurs normally, but you are just not using this atp but anyway here.
06:39
Here you are using another atp.
06:40
So particularly it is the same as the atp here, and hence the answer is going to be also 30 atps.
06:48
Okay, so this is the answer for question two...