Deficiencies in this vitamin can lead to adrenal stress and high cortisol levels or cortisol depletion as your body attempts to make up for the vitamin deficiency by using this hormone's overdrive mechanism, which is usually reserved for emergencies, illness and other stressful events.
The reason why it is advantageous to have weak hydrogen bonds between complementary base pairs and strong covalent bonds between phoshate and deoxyribose groups in a DNA molecâ¦ule is because the strong covalent bonds running along the  ladder  of the DNA molecule ( the phospate and deoxyribose units ) keep the molecule together during its ...
Covalent (double and single, as well as polar and non-polar) and Hydrogen bonds are found in the DNA molecule. The backbone of DNA is made of of Phosphate (PO43-) molecules and the sugar Deoxyribose (C5H10O4) Attatched to every sugar is a Base (C, G, A or T.) These are held together by single covalent bonds. Within the Phosphate, there is one double covalent bond (meaning two pairs of electrons are shared.).