A Research Scientist Injects Hepatocellular Carcinoma Cells into the Liver

question 509

Multiple Choice

A research scientist injects hepatocellular carcinoma cells into the liver parenchyma of an experimental guinea pig.  Serial observations show that the tumor cells progressively proliferate and invade the liver parenchyma to form a large mass.  After some time, malignant cells begin to penetrate the vascular basement membrane to gain access to the circulation.  During the process of basement membrane invasion, expression of which of the following substances is most likely to be increased in the tumor cells?

• A)Acid hydrolase
• B)Alkaline phosphatase
• C)Carboxypeptidase
• D)E-cadherin
• E)Hyaluronic acid
• F)Metalloproteinase

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Definitions:

Labor Unions

Organizations formed by workers from related fields that work together to protect their rights and interests, negotiate wages, and ensure safe working conditions.

Steel Industry

The sector of the economy engaged in the production, processing, and distribution of steel and steel products.

Industrial Workers of the World

An international labor union founded in 1905, known for its belief in the unity of all workers and the need for industry-wide unions.

Unskilled Workers

Employees who perform tasks that require little to no special training or education, often involving simple, manual labor.