A Student Isolates, Purifies, and Combines in a Test Tube

question 51

Multiple Choice

A student isolates, purifies, and combines in a test tube a variety of molecules needed for DNA replication. When she adds some DNA to the mixture, replication occurs, but each DNA molecule consists of a normal strand paired with numerous segments of DNA a few hundred nucleotides long. What has she probably left out of the mixture?

• A) DNA polymerase
• B) DNA ligase
• C) Okazaki fragments
• D) primase

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Definitions:

Lymphatic

Referring to the network of vessels, tissues, and organs that transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.

Blood Capillaries

The smallest blood vessels in the body, facilitating the exchange of substances between blood and tissues.

Ventricular Blood Pressure

The pressure of the blood in the heart's ventricles, influential during the cardiac cycle's contraction and relaxation phases.

Ventricular Contraction

The phase of the heart cycle in which the ventricles contract, pumping blood out of the heart to the lungs and the rest of the body.