The unit used to measure the biological effect of radiation sample is called the sievert rad rem curie

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The unit used to measure the biological effect of radiation is called the sievert (Sv). The sievert is the SI unit for radiation dose equivalent, which takes into account both the absorbed dose of radiation and the type of radiation involved. It is commonly used to quantify the potential health effects of radiation exposure.

The rad (radiation absorbed dose) and the rem (roentgen equivalent man) are older units for measuring radiation dose. The rad is a unit of absorbed radiation dose, while the rem is a unit of radiation dose equivalent. These units are not used as frequently as the sievert anymore, but they can still be encountered in some older literature or regulatory standards.

The curie (Ci) is a unit used to measure the activity of a radioactive substance. It is not a unit of biological effect or radiation dose, but rather a measure of how many radioactive decays occur per second in a given sample. The curie is not directly related to the biological effects of radiation exposure.