Nutrients that organisms need in relatively large amounts are called:

• A. Macronutrients
• B. Micronutrients
• C. Trace elements
• D. Minerals

Answer: (A)

Nutrients that organisms need in relatively large amounts are macronutrients. The idea here is about how much is required: macronutrients are needed in larger, everyday quantities (think grams per day) to build tissues, provide energy, and keep bodies functioning. In biology, this group includes the major elements like carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur, plus key minerals such as potassium, calcium, and magnesium, and even water for animals.

Micronutrients, by contrast, are required only in tiny amounts and often serve as enzyme cofactors or play other specialized roles. Trace elements fall under that same small-amount category. Minerals is a broad term that covers all inorganic nutrients; some minerals are macronutrients, while others are micronutrients. So the term that best fits “nutrients needed in relatively large amounts” is macronutrients.