commonest?

^ I know that's what I thought when he said it, but we're English we're allowed to change our language as much as Americans change our language

Calcium is a metal? O.O Why doesn't everyone set off metal detectors then? How do people work around huge magnets, like in a wrecking yard, without being stuck to them? Why don't bones rust? Why don't bones make sparks when a bone saw is applied? Why in the hell do some people think it's a good idea to put onions in when making a tuna fish sandwich?

^ "Metal" doesn't always equal "Iron". It's not pure anyway so it's not like having a "metal skeleton" like a Terminator.
Pure calcium is soft and reacts pretty violently with water, you wouldn't want bones like that.

I think Jimmy has QI confused with Family Fued!

Yeah Calcium is a metal, but the inorganic part of bones (bone is 2/3 inorganic matter and one third of organic) is made primarily of hydroxyapatite (85%), which is a crystallized form of the Calcium Phosphate salt. The rest of the inorganic part is Calcium Carbonate, and small amounts of magnesium, fluoride, sulfate, potassium, etc.

Chloride by itself is a deadly gas, sodium by itself is a very volatile metal. But if you get sodium chloride the result is table salt. In the same way, Calcium by itself is a metal and therefore would behave like one, but when it gets together with phosphate in the right combination you get the main component of bones.



>> ^ForgedReality:
Calcium is a metal? O.O Why doesn't everyone set off metal detectors then? How do people work around huge magnets, like in a wrecking yard, without being stuck to them? Why don't bones rust? Why don't bones make sparks when a bone saw is applied? Why in the hell do some people think it's a good idea to put onions in when making a tuna fish sandwich?

Tags for this video have been changed from 'qi, stepehn fry, rory mcgrath, jimmy carr, seaon locke, alan davies' to 'qi, stepehn fry, rory mcgrath, jimmy carr, sean locke, alan davies' - edited by xxovercastxx

Commonest metal? Probably LED ZEPPELIN.

What do they mean by commonest????

We all have iron in common
We all have calcium in common.

Are there some people out there without iron which makes calcium more common?
The question is flawed from the start!

Animals and humans have similar evolutionary backgrounds. This outlines some of the elements in the structure of animals and humans.

Macro Elements
* Calcium (Ca)
* Phosphorous (Ph)
* Magnesium (Mg)
* Sodium (Na)
* Potassium (K)
* Chlorine (Cl)
* Sulfur (S)

Micro Elements
* Iron (Fe)
* Copper (Cu)
* Manganese (Mn)
* Iodine (I)
* Zinc (Zn)
* Selenium (Se)
* Fluorine (Fl)
* Cobolt (Co)
* Molybdenum (Mo)
* Chromium (Cr)

Other Elements (These elements are all toxic at high levels)
* Lead (Pb)
* Nickel (Ni)
* Silicon (Si)
* Vanadium (Vn)

http://wiki.answers.com/Q/What_is_the_role_of_metals_in_human_body

"Animals and humans have similar evolutionary backgrounds."
FAIL!
humans are animals.

>> ^Sagemind:
What do they mean by commonest????
We all have iron in common
We all have calcium in common.
Are there some people out there without iron which makes calcium more common?
The question is flawed from the start!


Commonest as in the most common, most widespread, or most frequently encountered. Many of the other metals found in the body are in extremely minute quantities. We are talking of quantities such as less than 0.07% of the human body, compared to 1.5% of Calcium. This 1.5% may not seem like much, but Calcium is part of the 6 major elements in your body. These 6 are practically 99% while the other 1 percent is distributed among several other elements (like 60) so you can imagine the insignificant quantities.

Depends, what kind of metal is the rod some people have up their butts?

The important thing is someone shut Jimmy Carr up for half a second.

>> ^shole:
"Animals and humans have similar evolutionary backgrounds."
FAIL!
humans are animals.

"all squares are rectangles but not all rectangles are square" fail!

>> ^burdturgler:
The important thing is someone shut Jimmy Carr up for half a second.


Ge makes the show, along with that floppy haired guy.

I thought iron at first, but I realized that was the obvious wrong answer. So then I settled on calcium. I feel so smart now...

Bones contain more oxygen than calcium by mass if you consider both the organic and the inorganic parts.

*length=02:28

The duration of this video has been updated from unknown to 2:28 - length declared by cricket.