The four elements that make up about 96% of body matter are ________.

Question

Quizplus · Accepted Answer

Carbon, oxygen, hydrogen, and nitrogen are the four most abundant elements in living organisms, making up about 96% of the body's matter. Choice A includes phosphorus and calcium which are important, but not as abundant as the four mentioned elements. Choice B includes sodium and lacks carbon, which is a major component of all organic molecules. Choice D includes potassium and lacks nitrogen, which is an essential component of proteins and nucleic acids.

The Four Elements That Make Up About 96% of Body