I disagree. Of all the things I've had to memorise in my life (like the times tables, the structures of amino acids, etc), even partial recall helps me. And I only have partial recall because I knew them well when I did memorise them. I might not remember 8x5, but I remember 9x5, and minus 5. It allows me to do the maths in my head where I couldn't multiply 9x5 without a pen and paper. I remember that glycine's the simplest aa. I remember tryptophan is funky, and proline bonds weirdly and cysteine has a sulphur in it. They're all useful things that I only know because I had to memorise the whole kit and kaboodle at one point. If I'd only had to recognise them I'd remember nothing.
It was previously stated that everyone can learn and memorize the entire multiplication table and retain it. Unless of course you have a learning disability. I am pointing out that even if it is taught, many people do not retain this information.
I agree with you that knowing part of it is helpful. That is how I function. I am responding to those who think everyone can learn and retain the entire thing.