No, no it is not. It is really not up for debate. This is the way English works. I am sorry your teachers failed you. Keep on arguing though, I have officially unfollowed the thread as your arguments have gone further and further from trying to argue I am wrong, and into simply trying to argue I am stating my point incorrectly. I am not.
EDIT: As an example of an unqualified statement meaning in the entirety. If I told you I ate a banana. Would you assume I ate half of a banana and threw the other half away? Lack of a limiting qualifier always implies the entirety.
"A" is a qualifier meaning "single entity". If you said "I ate banana yesterday" it be entirely valid to assume either that you ate a single banana or that you ate 2 or three banana slices.
I'll agree that we've strayed a bit from the main point though. Which is that optimal use of biofuel depends entirely on a variety of factors including playstyle, how much biofuel you have coming in, how much power you need, what your other resources are, and what your long-term goals are.
Anyway, to get back to OP's actual question, you have 3 options in Direwolf to convert biofuel to EU.
1) Use a boiler and a turbine to generate EU.
2) Use bio generators from forestry.
3) Use the biofuel in combustion engines to generate MJ, then use that to run magma crucibles running on cobble to make lava that you convert to EU in geothermal generators.
#2 is the easiest, but least efficient. #1 is decently efficient, but turbines can be annoying to work with since you have to replace pieces. #3 is the most efficient if you are not running your system constantly, but requires the most space, design and planning.
Personally, I would simply switch to a different power source and reserve biofuel just for making MJs. Without PowerConverters, energy conversion from MJ to EU is a massive PITA.
edit: You can also just run Fuel Cans filled with biofuel in an IC2 generator, but it's by far the least efficient and not as easy to use as the bio generator.