What molecule on the side of the DNA ladder do the nitrogenous bases bond to? 1. Ribose sugar

2. Amino acids

3. Phosphate groups

4. Deoxyribose sugar

option a is correct i.e.

explanation:

in context to the membrane of nerve impulse, the outer membrane of neuron is semi permeable that is only sodium ions can pass through the membrane i.e. smaller ions can pass through the membrane while larger ions cannot pass through it.

just go with your heart buddy