[ PLEASE ANSWER ]
Keratin provides strength to the heart.
a.) True
b.) False

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a