Choose all the answers that apply. prokaryotes are multicellular or unicellular have differentiated cells have membrane-bound organelles do not have a membrane-bound nucleus are more primitive than eukaryotes

They do not have membrane bound nucleus or nuclear membrane and are more primitive than eukaryotes.

By the way this question should be a part of Biology!

Hope it helped You!

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =