Life's Legos Lost

Question

Puzzles are fun don't you think
Good ones are quite hard to find
Perhaps you will like this one
Really, I'm ready to sink
This puzzle starts fairly simply
Look for the pieces that rhyme
I fear the foundation is slanted
Organized with a wink
An interesting set of trebles
Regardless, once you are done
Under this layer of mine
Hearken to what is put boldly
Gather these building blocks
Looking at how they're cemented
Organized for letting you run
Shorten yet further these pebbles
Realize this pattern vaguely
Listen, you'll find that it talks
Even while you're feeling thwarted
Proteins ensure you are able
Until you are placed in a box

Answer 1

This seems to be related to:

some kind of chemical compounds, perhaps something to do with DNA (reading the title)

Order the lines in groups of ones that rhyme (as suggested by the sixth line) we get:
Puzzles are fun don't you think
Really, I'm ready to sink
Organized with a wink

Good ones are quite hard to find
Look for the pieces that rhyme
Under this layer of mine

Perhaps you will like this one
Regardless, once you are done
Organized for letting you run

This puzzle starts fairly simply
Hearken to what is put boldly
Realize this pattern vaguely

I fear the foundation is slanted
Looking at how they're cemented
Even while you're feeling thwarted

An interesting set of trebles
Shorten yet further these pebbles
Proteins ensure you are able

Gather these building blocks
Listen, you'll find that it talks
Until you are placed in a box
The first letters of these appear to be abbreviations for chemical compounds.

Thanks to Wu33o, who provided a link, we've got:

PRO for proline, abbreviated to P
GLU for glutamic acid, abbreviated to E
THR for threonine, abbreviated to T
ILE for isoleucine, abbreviated to I
ASP for aspartic acid, abbreviated to D

Combining these letters in order of appearance we get:

PEPTIDE