You Are Asked to Give a Classroom Demonstration of DNA

question 59

Multiple Choice

You are asked to give a classroom demonstration of DNA supercoiling.To do so, you take two different colored pieces of rubber tubing, twist them very tightly and excessively around each other and join the ends of the tubing appropriately.Next, you relieve the supercoiling by breaking one strand and unwinding it.In this demonstration, the breaking and unwinding to relieve the supercoiling simulates the action of

• A)exonucleases.
• B)polymerases.
• C)ligases.
• D)topoisomerases.

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Definitions:

American People

Citizens or residents of the United States of America.

Economic Expansion

A phase of the business cycle when the economy grows, characterized by increasing employment, economic output, and consumer spending.

Supply-Siders

Advocates of the economic theory that reducing tax rates and regulatory barriers to production lead to an increase in supply of goods and services, driving economic growth.

Tax Rates

The percentages at which income, purchases, or other financial transactions are taxed by governments.