The 4 organic substances found in your body are carbohydrates, lipids, proteins and nucleic acids
it can be found in the body, products or remains of living things
Needed substances are carried to the body's cells by RBC's, or red blood cells. Red blood cells contain hemoglobin, a substance that allows proteins to bond to them. However WBC's(white blood cells) provide the body's cells with much needed protection.
The circulatory system brings the needed substances to the body tissues.
Foods containing protein such as fish, meats and legumes
The body mostly needs fats which are used to produce energy. The body also needs water which is used for cooling and other important functions.
Yes vitamins are organic substances. In fact organic compounds which are absolutely necessary for body but which cannot be synthesised by the body and are obtained from diet are called vitamins.
Nutrients are needed by body cells.
Blood
Of course hydrogen is found in cereal. You may be thinking hydrogen by its self, but that wouldn't happen, it is not in gaseous form for that matter. Basic organic chemistry, CHON, Carbon, Hydrogen, Oxygen and Nitrogen make up a large percentage of your body, and organic substances. Carbohydrates such as glucose, C6H12O6. The H is hydrogen, so yes in the carbohydrates, proteins, and organic substances for that matter hydrogen is in your cereal. Your body is full of it. If it is a concern to you, do not worry, it is not a gas in your cereal that will hurt you!
Nutrients are needed by body cells.
minerals
H2CO3
Organic nutrients required in small amounts to maintain growth and normal metabolism are called vitamins. Raw materials that the body can use to assemble some vitamins are provitamins.
minerals
Nutrition
it can be found in the body, products or remains of living things
liquid