2,500 is correct in my opinion
Answer:
1,3,4
A dichotomous key uses questions or statements to help identify organisms, it also uses characteristics in it's questions ( that may be yes-no) and statements to help separate organisms from one another.
Hope this helped and plz mark as brainliest!
Explanation:
Proteins have many important roles in cell function like structural support, biocatalysts, receptors.
Trichonympha lives in the gut of termites and digests cellulose eaten by the termite.
