The pairings between nucleic bases, forming "Watson-Crick" base pairs, are, on the one hand, adenine with thymine, and, on the other hand, guanine with cytosine. In addition, two nucleic acid sequences can match only antiparallel, that is to say between segments of opposite directions. Therefore, two nucleic acid sequences are complementary when the nucleic bases of one can pair with the nucleic bases of the other in the opposite direction to form two paired antiparallel segments.
The selective pairing of adenine (A) with thymine (T) and guanine (G) with cytosine (C) is based on the number of hydrogen bonds established between one of the purine bases and the one of the pyrimidine bases:
* Two hydrogen bonds between adenine (purine) and thymine (pyrimidines);
* Three hydrogen bonds between guanine (purine) and cytosine (pyrimidine).
Purity pairs, pyrimidine pairs, adenine-cytosine pair, or guanine-thymine pair are not normally formed. This selectivity is crucial for a large number of biochemical processes involving nucleic acids.
Answer:
The similarity they have is that they both produce two identical cells to each other and to the mother cell, but the mechanism is totally different as binary fission takes place in prokaryotic cells while mitosis takes place in eukaryotic ones.
Answer:
They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function.
Explanation:
In the van deemter equation, plate height (H) = A + B/u+ Cu.
So, A, B, U, and C affects the plate height. A is the eddy diffusion term, B is the longitudinal or ordinary diffusion term, C is the nonequilibrium or resistance to mass transfer coefficient, and U is the linear velocity.