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: a diagram a, b diagram b, c diagram c

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 absence limits growth (fewer cells with - growth factor). For cancer cells, they should grow (have many cells) both in presence and absence of growth factors. Option A shows many cells in both + and - growth factor conditions, matching cancer cell behavior. Option B has few cells in - growth factor (like normal), and Option C has few cells in both (not cancerous growth).

Answer:

A