Answer:
Explanation:
In the structure of Nucleic acids the nucleobases (nucleotide and bases) are arranged is a specific form.This form of arrangement is called Base stacking.It simply refers to the bond formed between the adjacent bases.
These nitrogenous bases of (A,T,C.G) pairing in DNA are in planes in geometry.The bases planes stack with one another.This form of arrangement give rooms for more Van der Waals interactions in the plane of the bases.Although the Van der Waals are weak interactions,the bond ensure that these bases are braided or twisted together to give maximum energy,to maintain stability of the bases,and therefore of DNA structure
Therefore in water and other aqueous solution the stability of structure of DNA is enhanced by the base stacking,(coiling or twisting)with maximum van der waals interaction among the bases, than the hydrogen bonds formed between bases.Generally there are more stacking among G-C,than A-T,thus the former pairing contribute more the structural stability than the latter (A-T)
Both are unicellular.
ecoli and paramecium are both unicellular and that is the only common characteristic. E.coli is a prokaryotic unicellular organism where paramecium is a eukaryotic unicellular organism. paramecium has a nucleus and ecoli has a nucleoid neither of them produce essential vitamins. contractive vacuoles are present only in paramecium.
Answer:
Calcium
Explanation:
it helps to make the bones strong by maintaining the bone mass necessary for them to function well.
<span>Homologous structure examples include wing structure of a bird and the arm structure of a ... A dolphin's flipper, bird's wing, cat's leg, and the human arm are considered ... Bats, whales, and many other animals have very similar homologous
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