A Helix is a cartilage piercing at the top of your ear.
A double helix is two helixes.
Helix is a genus of common snails
like the computer single helix is 1g ram double helix like 2g ram so double helix more stable
This is quite simple. Using stoichiometry to keep track of units, simply take the number of amino acids in the particular alpha helix and multiply by 15 angstroms. This is the length the alpha helix...