"<span>Let's start with the basics: you have
probably heard that your body is 90% (or 85% or 95%) water. In actual
fact, water is (probably--unless you are obese) the majority of your
body weight--but nowhere near 90%. The best estimate I have seen is 57%
(Body water). So that puts hydrogen and oxygen in the top four.
As
I mentioned, extremely obese people can be less than 50% water. Fat
(triglycerides) is composed of carbon, hydrogen, and oxygen. The
majority of the mass of a triglyceride is carbon--chemically it is
closely related to biodiesel. So that puts carbon in the top four.
Finally,
amino acids which make up proteins (which make up muscle) require
nitrogen. That makes the top four.: Oxygen, Carbon, Hydrogen, and
Nitrogen.
But wait! What about bones? Aren't they calcium and phosphorous? Bones are really heavy.
It
turns out that calcium and phosphorous are indeed the next two most
abundant (by mass) elements in the body, but where nitrogen is about 3%
of your body mass, calcium and phosphorous are 1.5% and 1.2%
respectively.
You can find the full breakdown of the elemental composition of your body here: <span>Abundance of the chemical elements"
</span></span>
Answer:
A. Passive Transport is migration of a molecule from one side of the cell membrane to the other, from an area of high electrochemical potential to a region of lower electrochemical potential.
B. Diffusion is an individual molecule of a material moving from a high-concentration location to a low-concentration area over a semipermeable barrier
C. Osmosis is the movement of molecules of water through a cell's partly permeable membrane from a liquid with a large concentration of water molecules to a solution with a lower concentration of water molecules.
D. Facilitated Diffusion are molecules that diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers.
E. Active transport is the transport of molecules across a cell membrane against a concentration gradient from a low-concentration region to a high-concentration region.
F. Selectively permeable is when some chemicals or ions pass across the membrane, while others are blocked.
G. Cellular respiration are organisms mix oxygen with food molecules, directing the chemical energy in these substances into life-sustaining processes while eliminating carbon dioxide and water as waste material.
Explanation:
Answer:
Depends on what are you refering to
Explanation:
So depending on what you are looking for (your question is quite vauge)
there are 5 atoms of the comopound (K2CO3)
within that compound, there are 2 atoms of Potassium and 1 atom of Carbonate. Within Carbonate there are 4 atoms (1 carbon and 3 oxygens)
so answers may be
5, 15, or 25.
I hope this helps.
Answer:
I know that Aerogel is the lightest metal in existence, but I don't think it would help much with your answer. I mean you can give it a try?
