Question

Indicate true (T) and false (F) statements below regarding the properties of cancer cells. Your answer would be a four-letter string composed of letters T and F only, e.g. TFFF. [3]

( ) Cancer cells invade and colonize territories that normally belong to other cells.
( ) Unlike in normal tissues, cell death is extremely rare in tumors.
( ) Cancer cells grow and proliferate in defiance of normal restraints.
( ) Malignant tumors are composed of cells that grow and proliferate, but still have not acquired invasiveness.

Answer 1

The correct four-letter string regarding the properties of cancer cells is TFTF. Cancer cells do invade other territories and grow without normal restraints, but cell death occurs in tumors, and malignant tumors are invasive.

Step-by-step explanation:

Indicate true (T) and false (F) statements below regarding the properties of cancer cells:

1. (T) Cancer cells invade and colonize territories that normally belong to other cells.
2. (F) Unlike in normal tissues, cell death is extremely rare in tumors.
3. (T) Cancer cells grow and proliferate in defiance of normal restraints.
4. (F) Malignant tumors are composed of cells that grow and proliferate, but still have not acquired invasiveness.

Cancer cells are known for their ability to grow uncontrollably and to invade surrounding tissues, displacing normal cells. Cell death or apoptosis does occur within tumors, meaning that the statement that cell death is extremely rare in tumors is false. As for malignant tumors, by definition, they are invasive and can spread to other parts of the body, so the statement that they are not invasive is also false.