Proteins have many important roles in cell function like structural support, biocatalysts, receptors.
The answer is D hope this helps
Hello! Autotrophs make their own food (plants) and heterotrophs consume other organisms for energy (consumers.) Autotrophs use the process of photosynthesis to produce the oxygen as one of its products. Heterotrophs use the oxygen produced by the autotrophs to perform cellular respiration, which releases carbon dioxide that plants use; it's a balanced cycle. Hope this helps!
Answer:
answer is 2 for both cuz they both have the 2 subscript next to hydrogen
