3 Answers. In Great Britain today, the role of the queen is completely ceremonial. She (and whoever comes after her as monarch) has absolutely no actual power. In political science terms, she is the head of state for Great Britain but is not head of government.
Overview. 1  Oxygen-hemoglobin dissociation curve sigmoidal shape is characteristic of positive cooperativity binding of 1 O2 molecule to 1 subunit of deoxyhemoglobin increases affinity for O2 in adjacent subunits. P50 is PO2 at which hemoglobin is 50% saturated â P50 â â hemoglobin affinity for O2 50% saturation achieved at higher-than-normal P50.
It is TETRAHEDRAL about the carbon like methane. However, Unlike methane the tetrahedral shape is NOT symmetric. This is because the oxygen, which combines directly to the carbon is a much larger atom than hydrogen. This distorted tetrahedral shape then has a 'tail' on the oxygen , which is the hydrogen of the alcohol. The bond angles about the carbon are all 109.5 degrees About the carbon the four carbon electrons combine in the following way. Three electrons combine with the three hydrogens in the usual way.