Question

How are tumors formed on the molecular level?

Answer 1

Usually, we have just the right number of each type of cell. This is because cells produce signals to control how much and how often the cells divide. If any of these signals are faulty or missing, cells might start to grow and multiply too much and form a lump called a tumour

Answer 2

When a normal cell undergoes processes that cause mutational damage, genes involved in normal homeostatic mechanisms that regulate proliferation and cell death become activated or protected against cell death, known as oncogenes. Genes that would normally inhibit proliferation, known as tumor suppressor genes, become inactive.

Step-by-step explanation: