Question

1. a __________ is a single unit (1 brick), while a __________ is many units attached together (more than one brick).
2. cell membranes are made up of a phospholipid bilayer.
3. the place where the enzyme and the substrate react together is called an active site.
4. ____________ are macromolecules that are important in muscle contraction and transporting oxygen in the blood.
5. ____________ are macromolecules that store genetic information in cells.
6. ____________ are commonly called fats and oils and is a major component of cell membranes.
7. glucose, sucrose, starch, and cellulose are examples of ____________.
8. ____________ are catalytic molecules that help speed up reactions.

Explanation:

1. A monomer is a single - unit building block like a single brick, and a polymer is made up of many monomers attached together.
2. Proteins are important for muscle contraction (e.g., actin and myosin) and oxygen - transport in the blood (hemoglobin).
3. Nucleic acids (DNA and RNA) store genetic information in cells.
4. Lipids are commonly called fats and oils and are a major component of cell membranes.
5. Glucose, sucrose, starch, and cellulose are examples of carbohydrates.
6. Enzymes are catalytic molecules that speed up chemical reactions.

Answer:

1. monomer; polymer
2. Proteins
3. Nucleic acids
4. Lipids
5. Carbohydrates
6. Enzymes