27. Excess exposure to nuclear radiation can cause harm. All of the following statements about radiation are true EXCEPT

A. Radiation can damage living tissue because of the high energy associated with the radiation.
B. Radiation can damage biological molecules by knocking an electron out of an atom, converting it into a positive ion.
C. Nuclear radiation refers to the high-energy particles and electromagnetic radiation emitted by a nucleus during nuclear change.
D. Nuclear radiation causes the same level of damage regardless of the source of radiation, α, β or γ radiation.
E. Ionization can cause irreparable damage to a biological molecule by weakening or breaking its covalent bonds.
I think the answer is D

I agree.

thank you

To find the answer to this question, we need to evaluate each statement individually and determine which one is false.

A. Radiation can damage living tissue because of the high energy associated with the radiation.
This statement is true. High-energy radiation can damage living tissue due to the ionizing effects it has on atoms and molecules.

B. Radiation can damage biological molecules by knocking an electron out of an atom, converting it into a positive ion.
This statement is true. Ionizing radiation can indeed remove electrons from atoms, converting them into positive ions. This process can cause damage to biological molecules.

C. Nuclear radiation refers to the high-energy particles and electromagnetic radiation emitted by a nucleus during nuclear change.
This statement is true. Nuclear radiation consists of high-energy particles and electromagnetic radiation that are emitted by a nucleus during nuclear changes, such as radioactive decay or fission.

D. Nuclear radiation causes the same level of damage regardless of the source of radiation, α, β, or γ radiation.
This statement is false. Different types of radiation have different levels of ionizing power and penetration. For example, alpha (α) radiation consists of highly charged particles and is relatively less penetrating but highly damaging when it interacts with living tissue. On the other hand, gamma (γ) radiation consists of high-energy electromagnetic waves and is highly penetrating but less damaging than alpha radiation.

E. Ionization can cause irreparable damage to a biological molecule by weakening or breaking its covalent bonds.
This statement is true. Ionization, which involves the removal of electrons from atoms or molecules, can indeed weaken or break covalent bonds in biological molecules, leading to potentially irreversible damage.

From the above analysis, statement D is the one that is FALSE. Therefore, the correct answer to the question is D.