Radiation damages living organism is primarily due to:
Correct answer: E. All of them
- A. Excitation phenomena
- B. Ionization
- C. Photoelectric effect
- D. Heating
- E. All of them
Explanation
The correct answer is All of them.Radiation can harm living organisms through a combination of mechanisms: excitation can cause energy release that damages cellular structures, ionization creates reactive ions that can disrupt DNA and proteins, the photoelectric effect results in electron ejection that compromises molecular integrity, and heating can denature proteins.While each mechanism individually can cause harm, their combined effects often lead to more severe damage. The extent of damage depends on factors like radiation type and dose. Each incorrect option describes a real mechanism of radiation damage, but on their own, they do not encompass the full scope of radiation's impact on biological organisms.
Last updated
About Biological and Medical Uses of Radiation
Radiation in medicine includes X-rays and gamma rays for imaging, radioactive tracers for diagnosis, and controlled radiation for destroying cancerous tissue. The topic also covers CT scans, PET imaging, radiotherapy, sterilisation, half-life and dosage, alongside biological damage, shielding and the need to balance diagnostic or therapeutic benefit against exposure.
Practise Nuclear Physics
1,254 free Nuclear Physics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1 Gy is equal to
A crack allows greater amount of X-rays to pass, which appears on photographic film as:
A radioactive tracer used for medical diagnosis should ideally have
An alpha particle can produce fluorescence in__________________?
Bones image is shown on x-ray photogarph because x-rays can be --------.