Prepare for the Foundations of Biology Exam 1. Dive into key biological concepts with multiple choice questions, hints, and explanations. Ace the exam with our efficient study methods!

Multiple Choice

All living organisms have four types of macromolecules. Which list correctly names these four?

Macromolecules are large biomolecules that form the main structural and functional components of cells. The four major classes that make up these macromolecules are proteins, carbohydrates, lipids, and nucleic acids. Proteins, built from amino acids, perform a wide range of roles from catalyzing reactions to providing support and signaling. Carbohydrates, composed of sugar units, supply energy and can also contribute to structural elements. Lipids are large, mostly nonpolar molecules such as fats, phospholipids, and steroids; they store energy and form cell membranes. Nucleic acids, made of nucleotides, store and transmit genetic information and guide protein synthesis. The other items listed are not macromolecule classes: vitamins and minerals are micronutrients, and pigments are small molecules; enzymes are proteins (or RNA) rather than a separate macromolecule category. So the correct set is proteins, carbohydrates, lipids, and nucleic acids.

Macromolecules are large biomolecules that form the main structural and functional components of cells. The four major classes that make up these macromolecules are proteins, carbohydrates, lipids, and nucleic acids. Proteins, built from amino acids, perform a wide range of roles from catalyzing reactions to providing support and signaling. Carbohydrates, composed of sugar units, supply energy and can also contribute to structural elements. Lipids are large, mostly nonpolar molecules such as fats, phospholipids, and steroids; they store energy and form cell membranes. Nucleic acids, made of nucleotides, store and transmit genetic information and guide protein synthesis. The other items listed are not macromolecule classes: vitamins and minerals are micronutrients, and pigments are small molecules; enzymes are proteins (or RNA) rather than a separate macromolecule category. So the correct set is proteins, carbohydrates, lipids, and nucleic acids.