Definition. noun, plural: autotrophs. A organism capable of making nutritive organic molecules from inorganic sources via photosynthesis (involving light energy) or chemosynthesis (involving chemical energy) Supplement
Spinach also contributes to your daily intake of iron and calcium. Although spinach naturally contains sodium, it only provides 25 milligrams per cup and the 10-ounce bag contains only 224 milligrams, increasing its desirability as a heart-healthy food.
The calorie content is: 1  7 calories in 1 cup of raw spinach (1.1 oz or 30g) 2  41 calories in 1 cup of boiled or steamed spinach (6.3 oz or 180g)