In article
,
Chris wrote:
On Sep 19, 12:54 am, Billy wrote:
In article
,
Chris wrote:
On Sep 17, 8:56 pm, Billy wrote:
In article ,
"symplastless" wrote:
"Chris" wrote in message
.
..
On Sep 16, 6:57 pm, "symplastless" wrote:
"Chris" wrote in message
m...
On Sep 14, 7:40 pm, "symplastless"
wrote:
Thank you for your input.
Chris show me one per. table that identifies elements as nutrients.
--
Sincerely,
John A. Keslick, Jr.
Consulting Tree Biologistwww.treedictionary.com
andhttp://home.ccil.org/~treeman
Watch out for so-called tree experts who do not understand tree
biology.
Storms, fires, floods, earthquakes, tornado's, volcanic eruptions
and
other
abiotic forces keep reminding humans that they are not the boss.
The table I mentioned above (the one in Campbell & Reece) has is
titled "Plant Nutrients" and it has two columns. The first is divided
into two subsections, titled macronutrients and micronutrients.
Nitrogen, for example, is listed as a macronutrient. The second
column
is titled, "Form available to plants." When we look there, we see
the
(macro)nutrient nitrogen is available not as N or even N2, but only
as
NO3- or NH4+. So the plants cannot absorb elemental nitrogen (the
common atmospheric form of which is N2) but they must get their
nitrogen as either nitrate or ammonia.
Note the difference between humans and plants here. Human nutrients
are commonly listed (and I have taught nutrition as well as General
Biology) as energy, protein, carbohydrate, lipid, water, minerals, &
vitamins.
God help your students. So what kind of energy are we talking here,
kinetic or potential?
Excuse me? Um, first off, energy is not so simplistic, I am afraid.
There are more kinds of energy than kinetic or potential- you know
that, right? There's thermal energy, and electromagnetic radiation
(like X-rays) neither of which can be classified as kinetic or
potential energy.
Let's see. Thermal energy requires a gradient, that is to say high
energy to low energy, in order to function. Allowing an object in a
high energy state to go to a lower energy state. That is called potential
energy.
Only if you want to use a highly nonstandard definition of potential
energy. But feel free.
It is a very standard definition of energy, whether you are talking
foot-pounds or joules.
And you must have heard of Erwin Schrödinger and wave mechanics.
Can you say photon? Sure you can. It can be treated as a wave or a
particle. So what is all this crap? My response was to John, who has a
biology book but doesn't understand the terms in it. The science
If you want to reply to someone, perhaps you should take a little more
care in responding to the right person. If you look at the
attributions, your response was to me, not John. Here's a free clue:
those little '' thingies (or whatever your newsreader inserts before
quoted material) actually tell you something.
It must be serendipity to have found another ignorant person in
need of instruction.
vocabulary is as different from normal English as the legal vocabulary
is.
But the answer to your question, of course, is that it's chemical
energy. Chemical bonds retain energy, and breaking those bonds
releases the energy. Lipids contain more of those bonds, and more high-
energy bonds, than do carbohydrates or proteins, hence there are more
Calories/gram in fats than in the other two nutrients.
Hydrocarbons are basically hydrogen and carbon with a greater percentage
of carbon to be oxidized than carbohydrates, which already contain
oxygen, or proteins which have oxygen and nitrogen comprising part of
their weight. Where are you going with your sneering stupidity?
Sneering stupidity? What's your issue? You have some real problems.
That chip on your shoulder is big enough to block your view of
reality.
No response to the substance of the discussion?
The most dangerous form of malnutrition goes by the acronym PEM, for
protein-energy malnutrition. In PEM we see a deficiency both in
essential amino acids and in caloric intake. In children this leads to
kwashiorkor- the poor kids with the hugely swollen bellies (a result
of an inability to move liquids back into the blood), and in adults it
manifests as marasmus, or wasting, where we see the body mobilizing
lean muscle tissue for energy. But note the name- "energy
malnutrition". Yes, energy is classified by nutritionists as a
nutrient. You're welcome to check any nutrition textbook.
Synonyms for protein-energy malnutrition and related keywords:
protein-energy malnutrition, PEM, protein-calorie malnutrition,
kwashiorkor, marasmus, starvation, hunger, poor diet, nutritional
deficiency.
Just bought a thesaurus, did you? (Now _that's_ a sneer.)
Sorry Chris, counselors, or medical practitioners, nutritionists may be
but they aren't biologists, chemists, or physicists. Just because some
of them may use a term to define a condition doesn't mean that the term
is based in the hard sciences. The term may have meaning to them but is
meaningless to the greater scientific community.
Well, as a professional biologist working in biology, I can assure you
that you're mistaken.
My condolences to biologists everywhere.
There was a day when biologists were the butt of scientist's jokes.
They would take simple chemistry or simple physics and avoid "real"
scientists, but those days are gone and now biologists are specialized
biochemists and very respected.
I can only presume you are a throw back to the "studying morphology"
type of biologist as opposed to the "mitochondrial sequencers" or
studiers of enzyme systems. I can only imagine the hilarity that would
break out if you talked about protein-foot pound malnutrition or
protein-joule malnutrition.
Thanks for the chuckle.
But you have a nice day.
Chris
--
Billy
Bush and Pelosi Behind Bars
http://www.youtube.com/watch?v=9KVTf...ef=patrick.net
http://www.haaretz.com/hasen/spages/1016232.html