http://www.anatomyzone.com. 3D anatomy tutorial providing a basic introduction to respiratory anatomy using the Zygote Body Browser (http://www.zygotebody.com). This is the second part of the tutorial and covers the bronchial tree and lungs.Join the Facebook page for updates: http://www.facebook.com/anatomyzone.his is the second part of the tutorial and covers the bronchial tree and lungs. Join the Facebook page for updates: http://www.facebook.com/anatomyzone.
The average atomic mass of carbon is 12.011. This is a weighted average based on three forms (isotopes) of carbon with different natural abundances. Carbon 12 has an atomic mass of 12.00 (carbon 12 is a special case because its mass is <i>defined</i> to be exactly 12 atomic mass units) and a natural abundance of 0.9893.
How Many Carbon Atoms Are in a Cell? A cell with a volume of 1 Âµm 3 and a density of about 1 g/ml has a total mass of 10 â12 grams. From the formula C 4 H 7 O 2 N 1 and the weights of the elements, we derive a carbon con-tent of about 12 Ã 4/(12 Ã 4 + 7 + 2 Ã 16 + 14) = 48/101 or about one half of the dry mass.