Cancer May Be Caused by

question 54

Multiple Choice

Cancer may be caused by

• A) a cell cycle checkpoint problem.
• B) failure in apoptosis.
• C) unregulated cell division.
• D) failure in DNA repair mechanisms.
• E) All of the above.

---

Definitions:

Spring Tide

A condition of especially high and low tides caused when the sun, moon, and Earth are aligned, increasing the gravitational pull on the oceans.

Neap Tide

A condition of the sea where the difference between high and low tide is at its least, occurring twice a month.

High Tide

The state of the tide when it is at its highest level, usually occurring twice in a 24-hour period.

Low Tide

The condition of the sea when it has reached its lowest level within the tidal cycle, often exposing areas that are submerged at high tide.