Question

1. what are the basic functions of macromolecules in biological organisms? proteins: many functions simple sugars: monosaccharides complex sugars: energy polysaccharides lipids: amino acids 2. match the monomers with the polymers they compose. (there may be more than 1 correct answer for each.) protein - d a. glycerol carbohydrate - b b. nucleotides lipid - c c. amino acids nucleic acid - e d. monosaccharides e. fatty acids 3. list 2 - 3 limitations of using qualitative tests on foods.

Explanation:

1. Proteins have diverse functions like catalyzing reactions, providing structural support, and transporting molecules. Simple sugars (monosaccharides) are a primary energy - source and building blocks for complex carbohydrates. Complex sugars (polysaccharides) store energy (e.g., starch in plants) and provide structural support (e.g., cellulose in plant cell walls). Lipids are important for energy storage, membrane structure, and hormone production.
2. Proteins are composed of amino acids (C). Carbohydrates are composed of monosaccharides (D). Lipids can be composed of glycerol and fatty acids (A and E). Nucleic acids are composed of nucleotides (B).
3. Limitations of qualitative food tests include: They may give false - positives or false - negatives due to interference from other substances in the food. They often only detect the presence or absence of a substance and not the exact quantity. Some tests require specialized equipment or trained personnel.

Answer:

1. Proteins: Catalyze reactions, structural support, transport; Simple Sugars: Energy source, building blocks; Complex Sugars: Energy storage, structural support; Lipids: Energy storage, membrane structure, hormone production.
2. Protein: C; Carbohydrate: D; Lipid: A, E; Nucleic Acid: B
3. False - positives/negatives due to interference; Detect presence/absence not quantity; Require specialized equipment/personnel.