Final answer:
True, certain types of ionizing radiation can penetrate the body and cause biological harm by damaging DNA and leading to malfunctions in cell processes, potentially causing cancer.
Step-by-step explanation:
Some types of radiation can indeed penetrate the body and cause biological harm. This statement is true. Specifically, ionizing radiation has the capacity to ionize molecules or break chemical bonds, resulting in damage to DNA and other critical biological molecules. Such damage can lead to errors in cell division and possibly cause cancer if the damage is not repaired properly. While alpha particles are less penetrating and usually cannot get past the dead layer of skin, gamma rays are much more capable of penetrating deeply into biological tissues and causing significant harm. The extent of damage also depends on factors like the duration of exposure and proximity to the source of radiation.