DNA Is Composed of Four Nucleosides: Adenosine, Cytidine, Thymidine, and Guanosine

question 27

Multiple Choice

DNA is composed of four nucleosides: adenosine, cytidine, thymidine, and guanosine. If scientists introduced radioactive thymidine into the growth medium of the cells, it would be incorporated into the DNA molecule

• A) at any point in the cell cycle.
• B) during DNA replication.
• C) as the cell enters G₁ of interphase.
• D) when centromeres split so the two chromosomes can be separated.

---

Definitions:

U.S. Price Support Program

Government initiatives designed to stabilize or increase market prices typically for agricultural products, by buying excess supply or offering subsidies.

Freedom To Farm Act

A U.S. federal law enacted to reduce government control over farming operations, allowing farmers more freedom in making planting and harvesting decisions.

Farm Policy

Government guidelines and regulations aimed at controlling agricultural production, prices, and trade to support farmers and the agricultural sector.

Farm Programs

Government initiatives designed to support farmers, stabilize food prices, and ensure a steady supply of agricultural products through subsidies, loans, and other means.