The following is an excerpt from the case study "it's all greek to me": "i am sorry to give you bad news. nikoleta does have anemia but, unfortunately, giving her a high iron formula was exactly the opposite of what should be done. nikoleta's disorder has a genetic basis."

iron is an important structural component of hemoglobin. explain why this treatment failed?

The anemia was not caused by a lack of iron in Nikoleta's body; instead, it was due to the fact that her body could not produce and cope with high amounts of iron due to her genetics. Therefore, this treatment of administering supplementary iron failed..

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.