Differences among organisms are caused by
A) large differences in elemental composition from organism to organism.
B) differences in the types and relative amounts of organic molecules synthesized by each organism.
C) differences in the elements that bond with carbon in each organism.
D) differences in the sizes of the organic molecules in each organism.
E) differences in inorganic compounds present in each organism.

Question

Quizplus · Accepted Answer

Organic molecules, such as proteins, carbohydrates, and nucleic acids, are responsible for the vast majority of an organism's structure and function. Differences in the types and relative amounts of these molecules synthesized by each organism can account for the observed differences among them. The other answer choices are not as significant in causing differences among organisms.

Differences Among Organisms Are Caused by