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 ...
The DNA duplex has polarity. One end of each DNA strand is called 5' (prime) end because the last deoxyribose unit at this end has carbon at position 5, free.Similarly, the other end of the strand is termed 3' (prime) because the last deoxyribose unit has carbon at position 3, free.Himadrisekhar S Â· 8 years ago.f a phosphate group is attached to the 5â² end, ligation of two nucleotides can occur, via a phosphodiester bond from the 5â²-phosphate to the 3â²-hydroxyl group of another nucleotide. If it is removed no ligation can occur.