BIOMOLECULES AND ENZYMES

Detailed explanation-1: -If all the DNA strands run in the same direction, it is termed to be a parallel quadruplex, and is known as a strand-reversal/propeller, connecting adjacent parallel strands.

Detailed explanation-2: -DNA molecules have an antiparallel structure-that is, the two strands of the helix run in opposite directions of one another. Each strand has a 5’ end and a 3’ end.

Detailed explanation-3: -DNA is composed of two strands of nucleotides held together by hydrogen bonding. The strands each run from 5’ to 3’ and run in antiparallel, or opposite, directions from one another.

Detailed explanation-4: -The strands of a DNA double helix are said to be “antiparallel” because the have the same chemical structure, but are opposite in direction.

Detailed explanation-5: -If the DNA strand was parallel, replication would not be possible. The nucleotides would not be complementary to each other and, as a result, would not pair in a genetic molecule. Therefore, the DNA being antiparallel is the only way replication and life could occur.