Exam API-571 All QuestionsBrowse all questions from this exam
Question 29

Different organisms thrive on different nutrients including inorganic substances (Sulfur, H²S), and organic substances (Hydrocarbons, Organic acids). In addition, all organisms require a source of carbon, nitrogen and _______ for growth.

    Correct Answer: D

    In addition to carbon and nitrogen, phosphorus is an essential element for the growth of all organisms. Phosphorus plays a critical role in energy transfer, nucleic acid synthesis, and cell membrane structure.

Discussion
ahmadmmOption: D

Different organisms thrive on different nutrients including inorganic substances (e.g. sulfur, ammonia, iron, sulfate compounds, and H2S) and organic substances (e.g. hydrocarbons and organic acids). In addition, all organisms require a source of carbon, nitrogen, and phosphorous for growth.