AP BIOLOGY

CELL DIVISION

CELL DIVISION AND CANCEROUS CELLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cancer cells may metastasize (grow) by ____
A
cells that break off of a tumor, travel in blood vessels, settle in other parts and regrow
B
cells that break off of a tumor and travel in blood vessels but can’t settle anywhere else
C
they can only grow in the same part of the body where they first started
D
cancer cells can’t grow and change
Explanation: 

Detailed explanation-1: -The spread of cancer cells from the place where they first formed to another part of the body. In metastasis, cancer cells break away from the original (primary) tumor, travel through the blood or lymph system, and form a new tumor in other organs or tissues of the body.

Detailed explanation-2: -Cancer metastasizes due to several factors, namely attack by the immune system, lack of oxygen and necessary nutrients, large amounts of lactic acid produced by glycolysis and increased cell death. Therefore, the majority of the presently available treatments for cancer also bear the potential to induce metastasis.

Detailed explanation-3: -When cancer spreads, it’s called metastasis. In metastasis, cancer cells break away from where they first formed, travel through the blood or lymph system, and form new tumors in other parts of the body. Cancer can spread to almost anywhere in the body. But it commonly moves into your bones, liver, or lungs.

Detailed explanation-4: -When this happens, it’s called metastatic cancer, advanced cancer or Stage IV cancer. Nearly all types of cancer have the potential to metastasize, but whether they do depends on a number of factors. Metastatic tumors (metastases) can occur in three ways: They can grow directly into the tissue surrounding the tumor.

Detailed explanation-5: -Lymphatic Metastasis Cancer can use the lymphatic system as well as the circulatory system to metastasize. The movement of cancer cells via the lymphatic system into lymph nodes is used in the detection of metastatic disease and tumor staging.

There is 1 question to complete.