Mutated genes called ________ encourage the uncontrolled cell division that results in cancer.
A) oncogenes
B) carcinogens
C) replicants
D) mutations
Question 2
If a tumor is slow-growing and does not spread to other parts of the body, it is categorized as a ________ tumor.
A) benign
B) malignant
C) metastasizing
D) non-invasive