Manually Issued Passenger Ticket This ticket is handwritten and consists of Flight Coupon(s) with carbon copy. ATB (Automated Ticket and Boarding Pass). ATB ticket is imprinted and consists of Flight Coupons and Boarding Pass with magnetic stripe on the backside. e-Ticket. This is sample for E-ticket as A4 size paper and Ticket size. E ticket system does not need the conventional passenger air ticket as TAT or ATB. The passenger's boarding information is electronically managed in the system of an airline.
Report Abuse. 1  DNA is interior the type of a double helix. the backside pairing rule describes the complementarity of the bases. Adenine is going with Thymine; Cytosine with Guanine. the cost of this would not lie in guy or woman bases, yet fairly interior the final base sequence. 2  Hydrogen bonds join them up.
These combinations (A/T) and (G/C) are called base pairs. The two DNA strands are held together by interchain hydrogen bonds. H-bonds pair the bases in one chain to the complementary bases in the other chain. (A/T and G/C). slide 2 of 4. Hydrogen Bonds in DNA A number factors are responsible for the stability of the DNA double helix structure, among them hydrogen bonds. Internal and external hydrogen bonds stabilize the DNA molecule. The two strands of DNA stay together by H bonds that occur between complementary nucleotide base pairs. Two hydrogen bonds occur between the adenosine and the thymine base pairs, and between the cytosine and the guanine there are three. While each hydrogen bond is extremely weak (compared to a covalent bond for example), the millions of H-bonds together represent an extremely strong force that keeps the two DNA strands together.