1 Chronic bronchitis: A form of COPD characterized by a chronic productive cough. 2  Emphysema: Lung damage allows air to be trapped in the lungs in this form of COPD. 3  Difficulty blowing air out is its hallmark. 4  Acute bronchitis: A sudden infection of the airways, usually by a virus.
There are only 46 DNA molecules ( 23 pairs) in human somatic cell. There are about 22000 genes and close to 3.2 billion base pairs in total.
How many atoms are in a human cell? A: According a study from Washington University, there are approximately 100 trillion atoms in a human cell. Approximately the same number of cells are in the entire human body, meaning that 10 octillion atoms, or a 1 followed by 28 zeros, make up each person. Continue Reading. The 100 trillion figure is a close approximation for the number of atoms in a cell, but there are many reasons that it is not an exact figure. Among other variables, human cells attain vastly different sizes. For example, blood cells are a few micrometers in diameter, while neurons can be up to 0.1 millimeters in length.