PATHOLOGY

Detailed explanation-1: -Tumors, including cancers, are caused by abnormal cells that multiply continuously. If the abnormal cells continue to divide unstopped, they can damage the tissues around them, spread to other parts of the body (malignancy), and even result in death.

Detailed explanation-2: -So, the correct option is ‘Neither mitogens nor energy-rich compounds are present. ‘

Detailed explanation-3: -So, the correct option is ‘Mitosis occurs after G0 phase’.

Detailed explanation-4: -Cells in G0 phase are not actively preparing to divide. The cell is in a quiescent (inactive) stage that occurs when cells exit the cell cycle. Some cells enter G0 temporarily until an external signal triggers the onset of G1.