Question

the following diagram shows how cells normally respond to the presence (bottom left) and absence (bottom right) of growth factors in their culture medium. which of the following diagrams shows how cancer cells are likely to respond to the presence and absence of growth factors in their culture medium? choose 1 answer: diagrams for options a, b, c are omitted as they are images

Explanation:

Cancer cells are characterized by uncontrolled cell division and do not depend on growth factors for proliferation. In normal cells, growth factors stimulate growth (more cells with +growth factor) and lack of growth factors limits growth (fewer cells with -growth factor). For cancer cells, they should grow (have many cells) both in the presence and absence of growth factors. Option A shows normal - like response (more with +, fewer with -). Option B shows limited growth in both, which is not cancerous. Option C shows many cells (uncontrolled growth) in both + and - growth factor conditions, matching cancer cell behavior.

Answer:

C