Chemical factors: This is due to internal stimuli. Changes in the blood such as decrease in O2, increase in CO2 and decrease in PH cause impulse in the carotid artery which stimulates the respiratory centers in the medulla and cause breathing.
Mechanical factors: also called external stimuli. Compression of the fetal chest during delivery forces small amount of lung fluid out of the lungs. This increase in pressure in the chest draws air into the lungs.
Answer:
the cell was dicovered in 1665
When the daughter cell split or divide from it cell it is called cytokinesis
I think the most appropriate answer is A !!
as pyruvate is broken down into CO2 !
as C and D is out of options as there is no such event at all !
and NADH is not formed from glucose !
so I would like to suggest A !!!
