Cellular Biology

Question 1

Cells are most radiosensitive in which phase?

Answer 1

M and G2

Question 2

Cells are most radioresistant in which phase?

Answer 2

S phase

Question 3

Dominant action in the interaction of high linear energy transfer (LET) particles with a biological material is:

Double ionization
Direct action
Single ionization
Indirect action

Answer 3

Direct action