There are 249 calories in a 3.5 oz serving of Ground beef Ground Beef, crumbled, cooked, drained, rinsed. Calorie breakdown: 57% fat, 0% carbs, 43% protein.here are 249 calories in a 3.5 oz serving of Ground beef Ground Beef, crumbled, cooked, drained, rinsed. Calorie breakdown: 57% fat, 0% carbs, 43% protein.
Sunlight and Vitamin D Synthesis. Exposure to the sunâs ultraviolet (UV) rays is required for vitamin D3 (cholecalciferol) to be produced. Vitamin D3 is synthesized in the skin once your unprotected skin receives exposure to sunlights UV rays. The sun emits three different types of radiation, UVA, UVB and UVC. The ozone layer is good at blocking all of the UVC radiation and most of the UVB, however, none of the UVA radiation.
1 Some of these minerals are essential to human metabolism. 2  Vitamins are organic compounds essential to the body. 3  They usually act as coenzymes or cofactors for various proteins in the body. 4  Water is an essential nutrient and is the solvent in which all the chemical reactions of life take place. Vitamins are organic compounds essential to the body. 2  They usually act as coenzymes or cofactors for various proteins in the body. 3  Water is an essential nutrient and is the solvent in which all the chemical reactions of life take place.