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hellohi hellohi
wrote...
Posts: 195
Rep: 5 0
12 years ago
Hey, so I got a Cellular Respiration assignment but I don't know how to do the questions. May I get some help? I don't want all of the answers, I'm just gonna post a,b of each set.

1. Calc the net number of ATP produced when:

a) 50 sucrose are broken down with not enough oxygen in brain tissue.
b) 25 maltose are broken down by yeast aerobically.

* What happens if it is anaerobically, and does it matter if it is sucrose or maltose??*

2. Calc the number of molecules of NADH actually produced when:

a) 5 lactose are broken down in a liver cell with ample oxygen.
b) 15 maltose are broken down anaerobically in a muscle cell.

*if it doesn't state it is broken down aerobically, do you assume it is? unles it says there was no oxygen*

3. A starch molecule containing 200 glucose molecules is hydrolyzed, calculate the number of water:

a) Required to hydrolyze the starch into indvidual glucose molecules.
b) Consumed during aerobic conditions.
c) Produced during aerobic conditions.

*I put c because it doesn't follow a pattern in the questions*

4. 10 molecules of sucrose are digested by different organisms. Calculate the number of molecules of:

a)lactate produced by tired muscle.
b)ethanol produced by yeast in the middle of a loaf of bread.

PLEASE HELP, its due tommorow (I haven't been procrastinating, studying hard for math tho =.=) Thanks guys!!
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wrote...
12 years ago
3. A starch molecule containing 200 glucose molecules is hydrolyzed, calculate the number of water:

a) Required to hydrolyze the starch into indvidual glucose molecules.
b) Consumed during aerobic conditions.
c) Produced during aerobic conditions.

For these, just calculate how much NET ATP you'd get for one glucose molecule and multiply it by the number of subunits.
Biology!
hellohi Author
wrote...
12 years ago
Sir, I don't get how to do it at all, that really doesn't help:( But I'm allowed to hand it in 2 days so ~~~~~~~~~~~~~~~~~~~~~~~~
wrote...
12 years ago
Sir, I don't get how to do it at all, that really doesn't help:( But I'm allowed to hand it in 2 days so ~~~~~~~~~~~~~~~~~~~~~~~~

Total ATP produced by aerobic respiration of 1 glucose molecule is 36 NET ATP. Now look at the question...

3. A starch molecule containing 200 glucose molecules is hydrolyzed, calculate the number of water:

a) Required to hydrolyze the starch into indvidual glucose molecules.
b) Consumed during aerobic conditions.
c) Produced during aerobic conditions.

I believe you need one ATP molecule to break a single chain. You have 199 chains connecting 200 glucose molecules in starch.

So...

36 * 200 = 7200 ATP
Subtract 199 ATP
---------------------
Total of 7001 ATP.
Biology!
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