Question

biology 114 - practice exam #1
22. which of the following is not a biological macromolecule?
a) water
b) protein
c) nucleic acid
d) carbohydrate
23. which building block is primarily responsible for storing genetic information?
a) carbohydrates
b) lipids
c) proteins
d) nucleic acids
24. the building blocks of proteins are:
a) fatty acids
b) amino acids
c) monosaccharides
d) nucleotides

Explanation:

• For question 22: Biological macromolecules are large molecules essential for life, such as proteins, nucleic acids, and carbohydrates. Water is a small - molecule compound, not a macromolecule.
• For question 23: Nucleic acids (DNA and RNA) are responsible for storing genetic information. Carbohydrates are for energy, lipids for energy storage and cell - membrane structure, and proteins have various functions like catalysis and structure but not genetic storage primarily.
• For question 24: Proteins are polymers made up of amino acids. Fatty acids are part of lipids, monosaccharides are building blocks of carbohydrates, and nucleotides are building blocks of nucleic acids.

Answer:

1. A. Water
2. D. Nucleic Acids
3. B. Amino acids