Biology · Transport

Metastasis is a critical process in cancer progression where cancer cells spread from the original tumor site to other parts of the body. It occurs when cancer cells break away from the primary tumor, travel through the bloodstream or lymphatic system, and establish new tumors in distant organs. Option C is correct because during metastasis, cancer cells can invade and destroy surrounding healthy tissues and cells. The other options misinterpret the nature of metastasis: Option A inaccurately describes a controlling relationship, Option B suggests an activity transfer that is not representative of metastasis, and Option D incorrectly relates metastasis to germ transfer, which is not relevant to cancer cell behavior.

This option suggests a hierarchical relationship, where one cell exerts control over others. However, this doesn't accurately reflect the nature of metastasis, which involves the spread of cancer cells rather than direct control.

This option implies a sharing of functions or tasks between cells. While communication between cells is crucial, metastasis specifically refers to the movement and spread of cancer cells rather than the transfer of activities.

This option describes a scenario where one cell eliminates others, which can occur during metastasis as cancer cells invade and kill surrounding healthy cells. Therefore, this is the correct understanding of the process of metastasis.

This option refers to the transmission of pathogens, which is unrelated to the process of metastasis. Metastasis is about the spread of cancer cells, not the transfer of germs.