Here are the answers to your questions:
Question 1A) All biomolecules have the following traits except:
- Nitrogen elements. (Not all biomolecules containing carbon, hydrogen, and covalent bonds contain nitrogen; for example, carbohydrates do not necessarily contain nitrogen.)
Question 2 A) What enzyme breaks down starch in your saliva?
- Amylase.
Question 3 A) Which soil-based compounds do plants use to create amino acids from glucose?
- Nitrogen. (Plants require nitrogen to synthesize amino acids from glucose.)
Question 4 A) What are the building blocks of proteins?
- Amino acids.
Question 5 A) How are carbohydrates related to the structure of cells?
- Cellulose makes up the cell wall in plants, helping the cell have a rigid outer layer. (This is a correct statement about the role of carbohydrates in cell structure.)