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Removed request for medical advice. The only advice Wikipedia can give is to call a doctor and have a face-to-face meeting with him/her. Only a medical professional can give responsible medical advice.
Most sources I've seen (incl. wiki) say that pyruvate is the end product of glycolysis. Except I was reviewing some biology in the Schaum's Outlines and it said pyruvic acid. According to wikipedia the formual for pyruvic acid is C(3) H(4) O (3) (I don't know how to do subscripts) and pyruvate is C (3) H(3) O(3), which makes sense given that pyruvate is the ionized form. In the glycolysis article it says pyruvate is the end product but if you look at the picture (glycolysis overview) then end product is has 4 hydrogen, which would make it pyruvic acid, not pyruvate. This makes more sense because after glycolysis if fermenation occurs the end product, supposedly pyruvate, is reduced twice by the two NAHDH to make a 6 hydrogen compound, which doesn't make sense because pyruvate reduced twice would only have five hydrogens. So my question is: is the end product of glycolysis pyruvate or pyruvic acid? Thanks, 76.95.117.123 ( talk) 02:19, 5 December 2009 (UTC)
You can think of it like this:
The proton of pyruvic acid helps supply protons to the
proton pump in the electron transport chain. Note that
NADH (reduced form of
NAD+) carries 2 electrons but only one proton. The other "lost" proton has to come from deprotonating pyruvic acid. ;-) (As you might know,
carboxylate is a weak base so it's not very good at taking back the lost proton.)
Decarboxylation (loss of CO2) donates a pair of energetic electrons (to NAD+) that will be used for the electron transport chain. The thermodynamic stability of CO2 helps drive the donation.
Acetyl-CoA is a useful anabolic building block (if you want to build sugars or fatty acid]]), but if you want to oxidise it all the way (use all its energetic electrons) it's kinda hard to oxidise and pull electrons (via evolving CO2) out of a molecule to nothingness (converting acetaldehyde to formaldehyde and formic acid would be a pretty bad idea), so it goes through the citric acid cycle. John Riemann Soong ( talk) 03:57, 5 December 2009 (UTC)
66.133.196.152 ( talk) 04:11, 5 December 2009 (UTC)
this code has come as an outcome of modelling of spot modelling process.i have arrived at eqation (1).If we take initial heat (due to atmospheric conditions) in each point as unity.this in coded in initialisation section. Now dq is sent to ode45 for solving in a prescribed time domain and with initial condition y0=0.
function dq = heat(t,q)
p=5;%number of variables
%--------------------------
% generation of const matrix
%---------------------------
A = 5 4 3 2 1';----------------------------------------arbitrarily chosen constant A,B,C,D
B = 5 4 3 2 1';------------------------------------------------
C = 5 4 3 2 1';------------------------------------------------
D = 5 4 3 2 1 ';------------------------------------------------
%----------------------------------
dq = zeros(p,1);
%-----------initialisation-----------------
for i=1:p
q(i) =1;
end
%----------------------------------------
dq(1) = A(1)*q(2) + B(1)*q(1) + D(1);
for i=2:p-1
dq(i) = A(i)*q(i+1) + B(i)*q(i) + C(i)*q(i-1) + D(i); -----------------(1)
end
here 'i' represents the weld number.code has considered the contribution from a point before ,a point after the point 'i', and contribution of heat added in next point.now my problem is that i want to optimise this process i.e. minimize dq.i.e.i need the welding to be cooled fastly.so what parameter should i consider for optimisation and what method should i adopt. SCI-hunter ( talk) —Preceding undated comment added 03:01, 5 December 2009 (UTC).
its written in matlab and its approxmately functioning correctly.please help now 220.225.98.251 ( talk) —Preceding undated comment added 16:28, 5 December 2009 (UTC).
I'm currently trying to calculate the dimensionless Bohr Magneton number peff for CuSO4·5H2O. The formulae I have are:
and
Where all the symbols have usual meanings and values. From this, peff should be:
However, the formula I have been given for the dimensionless Bohr magneton number is:
Where the fundamental constant of magnetism of an electron is squared in the denominator, how can this be? Thanks for any help 188.221.55.165 ( talk) 13:32, 5 December 2009 (UTC)
I had collect some rice water after washing rice for watering plants.
Because of keep raining these few days, I kept the rice water in plastic bottles to watering plants later.
But I found that after about two weeks, the plastic bottles had been harden and bloat.
The base of the bottle also bloat until hardly to stand on a flat surface.
I'm wondering is there any chemical reaction between rice water and mineral plastic bottle?
I'm curious and wish to know more about this condition, and also the reason why the bottle becomes like this.
Can anyone helps to find out the reason?
There is some problem statements i wish to know:
1. What is the fators affecting the bottle to bloat and harden?
2. What is the effect (positvely and negetively)
2. Does the chemical reaction brings harm to human?
3. Does it brings harm to plants if i watering plant with the rice water in it?
This is the condition i kept the rice water for about 2 weeks:
1. Date I kept the rice water in plastic bottles: 21/12/2009 to 5/12/2009 (I discovered out the condition on 5/12/2009)
2. Temperature: about 27 degree celsius to 33 degree celsius (sometimes in air-conditioned of 24 degree celsius)
3. Place I kept it: in a cupboard in my room
4. Not exposed to sunlight.
And these are few of the pictures of the bottle's condition:
--
perfection is not intact.. (
talk) 19:26, 5 December 2009 (UTC)
What is the substance composed of that wets and lubricates the human eye? Mac Davis ( talk) 16:26, 5 December 2009 (UTC)
I find it very strange which songs trigger strong emotions in myself — e.g., I get flushing waves of "tingles" whenever I hear Pachelbel's Canon, even though I can't recall having any strong memories associated with the song. Bits of Wagner hit me similar. I would probably generalize that it is probably only classical music that affects me in this particular way (the waves of "tingles," whatever that is), but I'm not a particularly big fan of classical at all (and haven't spent long amounts of time listening or playing it or anything along those lines), and generally do not think of myself as a terribly sentimental person (nor someone who is unusually appreciative of or interested in music). What causes this? Is it just some sort of long-lost association to music playing in stores around Christmastime when I was a child? Some property of this type of music itself—mathematical "problems" being proposed and solved? Just a sign of how complicated and weird the human brain is? I know there has been a lot written and researched on music and the brain, but I'd love a summary, if someone out there has thought about it much. -- Mr.98 ( talk) 16:45, 5 December 2009 (UTC)
Why do most manufacturers of soft contact lenses warn against showering with them in or using tap water to rinse out the lens case? What negative effects could showering with them in have on the lenses? Thanks! -- 98.108.36.186 ( talk) 20:27, 5 December 2009 (UTC)
I was just walking back across campus and I saw a small animal on the path ahead. I assumed it was a cat, but the nose was the wrong shape, so I assumed it was an opossum. No biggie; opossums are vicious, but they aren't likely to have rabies. Then when I was close enough to clearly make out the raccoon's markings (it's at night), I noticed that it was so content on drinking the contents of the puddle that it didn't notice me. I must have passed within five feet of it. It is a college campus, so perhaps it's just abnormally tame, but isn't an early sign of rabies an intense thirst? I did look at the article, but I can't tell whether the thirst comes before or after the animal is unable to drink. Just as a note, I did report it to campus police. Falconus p t c 23:31, 5 December 2009 (UTC)
Science desk | ||
---|---|---|
< December 4 | << Nov | December | Jan >> | December 6 > |
Welcome to the Wikipedia Science Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
Removed request for medical advice. The only advice Wikipedia can give is to call a doctor and have a face-to-face meeting with him/her. Only a medical professional can give responsible medical advice.
Most sources I've seen (incl. wiki) say that pyruvate is the end product of glycolysis. Except I was reviewing some biology in the Schaum's Outlines and it said pyruvic acid. According to wikipedia the formual for pyruvic acid is C(3) H(4) O (3) (I don't know how to do subscripts) and pyruvate is C (3) H(3) O(3), which makes sense given that pyruvate is the ionized form. In the glycolysis article it says pyruvate is the end product but if you look at the picture (glycolysis overview) then end product is has 4 hydrogen, which would make it pyruvic acid, not pyruvate. This makes more sense because after glycolysis if fermenation occurs the end product, supposedly pyruvate, is reduced twice by the two NAHDH to make a 6 hydrogen compound, which doesn't make sense because pyruvate reduced twice would only have five hydrogens. So my question is: is the end product of glycolysis pyruvate or pyruvic acid? Thanks, 76.95.117.123 ( talk) 02:19, 5 December 2009 (UTC)
You can think of it like this:
The proton of pyruvic acid helps supply protons to the
proton pump in the electron transport chain. Note that
NADH (reduced form of
NAD+) carries 2 electrons but only one proton. The other "lost" proton has to come from deprotonating pyruvic acid. ;-) (As you might know,
carboxylate is a weak base so it's not very good at taking back the lost proton.)
Decarboxylation (loss of CO2) donates a pair of energetic electrons (to NAD+) that will be used for the electron transport chain. The thermodynamic stability of CO2 helps drive the donation.
Acetyl-CoA is a useful anabolic building block (if you want to build sugars or fatty acid]]), but if you want to oxidise it all the way (use all its energetic electrons) it's kinda hard to oxidise and pull electrons (via evolving CO2) out of a molecule to nothingness (converting acetaldehyde to formaldehyde and formic acid would be a pretty bad idea), so it goes through the citric acid cycle. John Riemann Soong ( talk) 03:57, 5 December 2009 (UTC)
66.133.196.152 ( talk) 04:11, 5 December 2009 (UTC)
this code has come as an outcome of modelling of spot modelling process.i have arrived at eqation (1).If we take initial heat (due to atmospheric conditions) in each point as unity.this in coded in initialisation section. Now dq is sent to ode45 for solving in a prescribed time domain and with initial condition y0=0.
function dq = heat(t,q)
p=5;%number of variables
%--------------------------
% generation of const matrix
%---------------------------
A = 5 4 3 2 1';----------------------------------------arbitrarily chosen constant A,B,C,D
B = 5 4 3 2 1';------------------------------------------------
C = 5 4 3 2 1';------------------------------------------------
D = 5 4 3 2 1 ';------------------------------------------------
%----------------------------------
dq = zeros(p,1);
%-----------initialisation-----------------
for i=1:p
q(i) =1;
end
%----------------------------------------
dq(1) = A(1)*q(2) + B(1)*q(1) + D(1);
for i=2:p-1
dq(i) = A(i)*q(i+1) + B(i)*q(i) + C(i)*q(i-1) + D(i); -----------------(1)
end
here 'i' represents the weld number.code has considered the contribution from a point before ,a point after the point 'i', and contribution of heat added in next point.now my problem is that i want to optimise this process i.e. minimize dq.i.e.i need the welding to be cooled fastly.so what parameter should i consider for optimisation and what method should i adopt. SCI-hunter ( talk) —Preceding undated comment added 03:01, 5 December 2009 (UTC).
its written in matlab and its approxmately functioning correctly.please help now 220.225.98.251 ( talk) —Preceding undated comment added 16:28, 5 December 2009 (UTC).
I'm currently trying to calculate the dimensionless Bohr Magneton number peff for CuSO4·5H2O. The formulae I have are:
and
Where all the symbols have usual meanings and values. From this, peff should be:
However, the formula I have been given for the dimensionless Bohr magneton number is:
Where the fundamental constant of magnetism of an electron is squared in the denominator, how can this be? Thanks for any help 188.221.55.165 ( talk) 13:32, 5 December 2009 (UTC)
I had collect some rice water after washing rice for watering plants.
Because of keep raining these few days, I kept the rice water in plastic bottles to watering plants later.
But I found that after about two weeks, the plastic bottles had been harden and bloat.
The base of the bottle also bloat until hardly to stand on a flat surface.
I'm wondering is there any chemical reaction between rice water and mineral plastic bottle?
I'm curious and wish to know more about this condition, and also the reason why the bottle becomes like this.
Can anyone helps to find out the reason?
There is some problem statements i wish to know:
1. What is the fators affecting the bottle to bloat and harden?
2. What is the effect (positvely and negetively)
2. Does the chemical reaction brings harm to human?
3. Does it brings harm to plants if i watering plant with the rice water in it?
This is the condition i kept the rice water for about 2 weeks:
1. Date I kept the rice water in plastic bottles: 21/12/2009 to 5/12/2009 (I discovered out the condition on 5/12/2009)
2. Temperature: about 27 degree celsius to 33 degree celsius (sometimes in air-conditioned of 24 degree celsius)
3. Place I kept it: in a cupboard in my room
4. Not exposed to sunlight.
And these are few of the pictures of the bottle's condition:
--
perfection is not intact.. (
talk) 19:26, 5 December 2009 (UTC)
What is the substance composed of that wets and lubricates the human eye? Mac Davis ( talk) 16:26, 5 December 2009 (UTC)
I find it very strange which songs trigger strong emotions in myself — e.g., I get flushing waves of "tingles" whenever I hear Pachelbel's Canon, even though I can't recall having any strong memories associated with the song. Bits of Wagner hit me similar. I would probably generalize that it is probably only classical music that affects me in this particular way (the waves of "tingles," whatever that is), but I'm not a particularly big fan of classical at all (and haven't spent long amounts of time listening or playing it or anything along those lines), and generally do not think of myself as a terribly sentimental person (nor someone who is unusually appreciative of or interested in music). What causes this? Is it just some sort of long-lost association to music playing in stores around Christmastime when I was a child? Some property of this type of music itself—mathematical "problems" being proposed and solved? Just a sign of how complicated and weird the human brain is? I know there has been a lot written and researched on music and the brain, but I'd love a summary, if someone out there has thought about it much. -- Mr.98 ( talk) 16:45, 5 December 2009 (UTC)
Why do most manufacturers of soft contact lenses warn against showering with them in or using tap water to rinse out the lens case? What negative effects could showering with them in have on the lenses? Thanks! -- 98.108.36.186 ( talk) 20:27, 5 December 2009 (UTC)
I was just walking back across campus and I saw a small animal on the path ahead. I assumed it was a cat, but the nose was the wrong shape, so I assumed it was an opossum. No biggie; opossums are vicious, but they aren't likely to have rabies. Then when I was close enough to clearly make out the raccoon's markings (it's at night), I noticed that it was so content on drinking the contents of the puddle that it didn't notice me. I must have passed within five feet of it. It is a college campus, so perhaps it's just abnormally tame, but isn't an early sign of rabies an intense thirst? I did look at the article, but I can't tell whether the thirst comes before or after the animal is unable to drink. Just as a note, I did report it to campus police. Falconus p t c 23:31, 5 December 2009 (UTC)