GIVING 20 POINTS FOR BEST ANSWER. More biology questions I don't understand. I would like all of them answered if possible.

24. Carbohydrates, lipids, proteins and nucleus acids.

25. The element we can find in proteins but not in carbohydrates is nitrogen.

26. Carbon atoms are the backbone of all organic material or compound.

27. I would say the saturated fats contain at least only single bonds in the carbon chain.

28. The monomers that make up proteins is called amino acids.

29. Enzymes basically create a chemical reactions in the body. Enzymes speed up the rate of a chemical reaction to help support life. Enzymes that are found in your body help to perform very important task including building muscle, destroying toxins and breaking down particles of food during digestion.