What Was the Initial Explanation for the Sensitivity of Cancer

question 38

Multiple Choice

What was the initial explanation for the sensitivity of cancer cells to radiation therapy and chemotherapy as compared to normal cells?

• A)Cancer cells are sensitive to radiation and chemotherapy because they divide more rapidly.
• B)Cancer cells are less resistant to drugs or radiation because once they sustain genetic damage,they either progress through the cell cycle while repair is incomplete and they may undergo apoptosis.
• C)Cancer cells are sensitive to radiation and chemotherapy because they divide more slowly.
• D)Cancer cells are less resistant to drugs or radiation because once they sustain genetic damage,they either arrest the cell cycle until repair is complete or undergo apoptosis.
• E)Cancer cells are sensitive to radiation and chemotherapy because they will not undergo apoptosis.

---

Definitions:

Object Permanence

The understanding that objects continue to exist even when they cannot be observed or heard, a critical concept in cognitive development of infants.

A-not-B Error

A cognitive error observed in young children, where they wrongly assume that an object at a hidden location remains there even after seeing it being moved to a new location.

Habituation

A psychological learning process wherein there is a decrease in response to a stimulus after being repeatedly exposed to it.

Sensorimotor Stage

The first of Jean Piaget's stages of cognitive development, where infants from birth to about 2 years old learn through interacting with their environment using their senses and motor actions.