Advantages and disadvantages of radioactive labelling?

Answer 1

advantages:

1. They can detect *very* minute amounts of material.

2. You can label specific atoms (say carbon-1 in glucose) to follow where each one goes.

3. A radioactive molecule is chemically exactly like the unlabeled form (this isn't really 100% true but for what you want it's close enough). Thus, it will behave just like the unlabeled form so you don't have to worry about effects due to the labeling itself.

4. Since carbon, hydrogen and phosphorus can be easily purchased in radioactive forms, you can make just about any biomolecule in a radioactive form.

Disadvantages:

1. Radioisotopes are rather expensive.

2. Radioisotopes are hazardous and must be handled with extreme care. By the same token, they present a disposal hazard.

3. Some radioisotopes (like P-32 and I-125) have short half-lives, so you have to use them quickly.

Answer 2

Advantages: * Cancer is treated with radiation waves when these waves are shot at cancerous cells in one's body. By bombarding these cells, scientists hope that it will kill off the cancerous cells. Cancer victims lose their hair not because of the illness itself, but because the bombarding radiation is preventing hair growth. Disadvantages: * Alpha radiation has a long wavelength and cannot penetrate a piece of paper. Has no serious harmful effects if radiated a one off chance.

Gamma radiation is most harmful. Its wavelengths are short so can penetrate through the human body with ease. These rays cannot pass though a solid sheet of lead or aluminium.

Answer 3

Advantages: Radioactive labeling is sensitive and can detect small amounts of material. It is also versatile and widely used in various research applications.

Disadvantages: Radioactive labeling poses health risks to researchers due to exposure to radiation. It also requires specialized equipment and facilities for handling and disposal, which can be costly and time-consuming.

Answer 4

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