Joseph priestley discovered and described the chemical properties of oxygen. what type of chemist would he be considered today? a. biochemist b. inorganic chemist c. physical chemist d. organic chemist

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum