Question

macromolecules worksheet
part a. classify each as a carbohydrate, protein, lipid or nucleic - acid

1. carb starch
2. lipid cholesterol
3. lipid steroid
4. carb glycogen
5. nucleotide
6. rna
7. protein polypeptide chain
8. carb glucose
9. lipid unsaturated fatty acid
10. protein polysaccharide
11. lipid phospholipid
12. lipid glycerol
13. carb monosaccharide
14. carb cellulose
15. protein amino acid
16. protein enzyme
17. lipid saturated fat
18. dna

part b. identify the specific molecule (use the above terms) from each description. some terms may be used more than once.

1. lipid provides long - term energy storage for animals
2. instructions for building proteins
3. provides immediate energy
4. sex hormones
5. provides short - term energy storage for plants
6. animal and plant structures
7. forms the cell membrane of all cells
8. speeds up chemical reactions by lowering activation energy
9. one sugar
10. cells convert this into atp
11. amino acid monomer of proteins
12. provides long - term energy storage for plants
13. genetic material
14. steroid that makes up part of the cell membranes
15. 3 - carbon “backbone” of a fat
16. provides short - term energy storage for animals
17. many sugars
18. monomer of nucleic acids
19. forms the cell wall of plant cells

Explanation:

Step1: Recall macromolecule functions

Carbohydrates are energy - providing molecules. Lipids are for long - term energy storage and membrane formation. Proteins have catalytic and structural roles. Nucleic acids carry genetic information.

Step2: Answer Part B questions

1. Lipids (saturated fat) provide long - term energy storage for animals.
2. DNA contains instructions for building proteins.
3. Carbohydrates (glucose) provide immediate energy.
4. Lipids (steroids) are sex hormones.
5. Carbohydrates (starch) provide short - term energy storage for plants.
6. Proteins and carbohydrates are in animal and plant structures.
7. Lipids (phospholipid) form the cell membrane of all cells.
8. Proteins (enzymes) speed up chemical reactions by lowering activation energy.
9. Carbohydrates (monosaccharide) are one sugar.
10. Carbohydrates (glucose) are converted into ATP by cells.
11. Proteins (amino acid) are monomers of proteins.
12. Lipids (oil in seeds) provide long - term energy storage for plants.
13. Nucleic acids (DNA) are genetic material.
14. Lipids (cholesterol) are a steroid that makes up part of the cell membranes.
15. Lipids (glycerol) is the 3 - carbon “backbone” of a fat.
16. Carbohydrates (glycogen) provide short - term energy storage for animals.
17. Carbohydrates (polysaccharide) are many sugars.
18. Nucleic acids (nucleotide) are monomers of nucleic acids.
19. Carbohydrates (cellulose) form the cell wall of plant cells.

Answer:

1. Lipid (saturated fat)
2. DNA
3. Carbohydrate (glucose)
4. Lipid (steroid)
5. Carbohydrate (starch)
6. Protein and Carbohydrate
7. Lipid (phospholipid)
8. Protein (enzyme)
9. Carbohydrate (monosaccharide)
10. Carbohydrate (glucose)
11. Protein (amino acid)
12. Lipid (oil in seeds)
13. Nucleic acid (DNA)
14. Lipid (cholesterol)
15. Lipid (glycerol)
16. Carbohydrate (glycogen)
17. Carbohydrate (polysaccharide)
18. Nucleic acid (nucleotide)
19. Carbohydrate (cellulose)