Explain how reverse osmosis is similar to active transport?

Passive transport involves transportation of molecules in line or according to the concentration gradient.

Osmosis is a type of passive transport which involves the flow of water molecules across a semi-permeable membrane from a higher concentration to a lower concentration.

Reverse osmosis however involves the use of energy for transporting molecules as a result of it being against the concentration gradient. This is what makes it an active process.

life would be meaningless without memes

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.