The answer is d. Food chain
Answer: Matthias Schleiden
its asking for you to check the box if the item is preset in the cell hint: eukaryotic cells have a nucleus so you would say yes in the box. but since prokaryotic cells don't have a nucleus say no in the box
Answer:
last option: poor conducter of electricity.
Explanation:
Cellulose is not a source of nutrients for humans because HUMANS CAN NOT DIGEST IT.
Cellulose is made up of beta acetal linkages chemical bonds, these chemical bonds can only be broken by a specific enzyme and humans do not have these enzymes, thus, cellulose can not be digested by humans.