BIOL 4673 Lecture Notes - Lecture 5: Confidence Interval, Biomolecule, Teratology

• School: Acadia University
• Department: Biology
• Course: BIOL 4673
• Professor: Alexandre G R O S J E A N

Document Summary

Lecture 5 : heavy metals and human health. In our course think of heavy metal that is something toxic: metal that is toxic in small doses, concerned about human health. Heavy metals: naturally occurring, extracted from the earth, in ore(i. e. lead, copper, chromium, wide environmental dispersion, tendency to accumulate in select tissues, toxic in even low concentrations, typically found below ground, must be extracted. Metals have different applications and uses: once they are mined as ore, they cannot be returned back to original state. Need to know their chemistry and human physiology if you want to find out where they are. Pla(cid:374)ts do(cid:374)"t (cid:374)eed this: toxic in all forms, organic -> organometallics. 1: borderline, cr, cu, as, co, ni, zn, mn, fe, almost all micronutrients, arsenic is not required, it is metalloid, had property of metal and non-metal, on the list because it has high toxicity. Toxicity: class b > borderline > class a.