Answer:
4. Peptidoglycan
Explanation:
"Most bacteria can be broadly classified as Gram positive or Gram negative.
Gram positive bacteria have cell walls composed of thick layers of peptidoglycan.
Gram positive cells stain purple when subjected to a Gram stain procedure.
Gram negative bacteria have cell walls with a thin layer of peptidoglycan. The cell wall also includes an outer membrane with lipopolysaccharide (LPS) molecules attached."
Reference: Bailey, Regina. “Gram Positive vs. Gram Negative Bacteria.” ThoughtCo, ThoughtCo, 15 Oct. 2018
The correct answer for the given question above would be the second option. Based on the given scenario above about a fungal growth found on the nuts in a chocolate bar, the kind of a fungal infection could have infested the nuts would be <span>Aspergillus flavus. This is the kind of fungal infection that colonizes legumes and cereal grains. Hope this answer helps.</span>
I think it does make up all of the body tissues and organs.