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.
The sub questions are already answered very clearly. I will try to answer How many DNA molecules are present in a human cell's nucleus? One chromosome (non-replicated) i.e equal to one chromatid = 1 DNA molecule. One chromosome (replicated) i.e equal to 2 chromatids (aka sister chromatid) = 2 DNA molecules