AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

GENE MUTATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is true of of malignant tumors? (practice test on Schoology)
A
They do not require treatment.
B
They are easily removed through surgery.
C
They can cause tumors in other parts of the body.
D
They contain cells that stay clustered together.
Explanation: 

Detailed explanation-1: -Malignant tumors have cells that grow uncontrollably and spread locally and/or to distant sites. Malignant tumors are cancerous (ie, they invade other sites). They spread to distant sites via the bloodstream or the lymphatic system. This spread is called metastasis.

Detailed explanation-2: -The malignant cell is characterized by: acceleration of the cell cycle; genomic alterations; invasive growth; increased cell mobility; chemotaxis; changes in the cellular surface; secretion of lytic factors, etc.

Detailed explanation-3: -A branch of medicine that specializes in the diagnosis and treatment of cancer.

Detailed explanation-4: -The benign tumor is a non cancerous tumor and is normal. Malignant tumor is a cancerous tumor. These cells don’t spread to other tissues or organs and don’t invade other areas of the body. Malignant cells are dangerous and can spread to other organs and tissues.

There is 1 question to complete.