In nuclear medicine, a radioactive isotope, or tracer, can target a particular organ to take a "picture of it. Which properties of the tracer make it useful in nuclear medicine?

Check all that apply.

The isotope should have a short half-life.

The half-life of the tracer should be long in duration

The tracer should have the ability to damage tissues

A (the first option) and C (the third option)

Explanation:

The isotope should have the same behavior as other isotopes of the element.

and

The tracer should have the ability to be metabolized and excreted from the body.

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2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

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why is cellular respiration important for homeostasis?

it changes food into energy that the organism can use.

which of the following is most likely to happen if a cell is not able to divide?

the cell will not be replaced when it is damaged.

explanation: