Answer the following question given this paragraph: Food and Drink App: Vitamins and Minerals Vitamins are nutrients that our bodies need in small amounts but cannot synthesize; therefore, they must be obtained from the diet. The word vitamin comes from "vital amine" because it was once thought that all these compounds had an amine group (NH2) in it. This is not actually true, but the name stuck anyway. All vitamins are covalently bonded molecules. Most of them are commonly named with a letter, although all of them also have formal chemical names. Thus vitamin A is also called retinol, vitamin C is called ascorbic acid, and vitamin E is called tocopherol. There is no single vitamin B; there is a group of substances called the B complex vitamins that are all water soluble and participate in cell metabolism. If a diet is lacking in a vitamin, diseases such as scurvy or rickets develop. Luckily, all vitamins are available as supplements, so any dietary deficiency in a vitamin can be easily corrected. A mineral is any chemical element other than carbon, hydrogen, oxygen, or nitrogen that is needed by the body. Minerals that the body needs in quantity include sodium, potassium, magnesium, calcium, phosphorus, sulfur, and chlorine. Essential minerals that the body needs in tiny quantities (so-called trace elements) include manganese, iron, cobalt, nickel, copper, zinc, molybdenum, selenium, and iodine. Minerals are also obtained from the diet. Interestingly,. Q: Essential minerals that the body needs in tiny quantities are called what? A:

OPTIONS:
- flux minerals
- draw minerals
- byproduct minerals
- trace minerals

Answer: trace minerals

Answer the following question given this paragraph: The concentration of a solution represents the percentage of the solution that is the solute. You can calculate the concentration of a solution using this formula:. Q: What does the concentration of a solution represent? A:

OPTIONS:
- spending of solute
- the darkness
- the percentage of contaminates
- percentage of solute

Answer: percentage of solute

Answer the following question given this paragraph: Humus is the decayed remains of living organisms. Humus makes soil fertile. Q: What is the decayed remains of living organisms called? A:

OPTIONS:
- plateaus
- fossils
- oil
- humus

Answer: humus

Answer the following question given this paragraph: Venules A venule is an extremely small vein, generally 8100 micrometers in diameter. Postcapillary venules join multiple capillaries exiting from a capillary bed. Multiple venules join to form veins. The walls of venules consist of endothelium, a thin middle layer with a few muscle cells and elastic fibers, plus an outer layer of connective tissue fibers that constitute a very thin tunica externa (Figure 20.7). Venules as well as capillaries are the primary sites of emigration or diapedesis, in which the white blood cells adhere to the endothelial lining of the vessels and then squeeze through adjacent cells to enter the tissue fluid. Q: A venule is an extremely small vein, generally 8100 micrometers in diameter. postcapillary venules join multiple capillaries exiting from a capillary bed. multiple venules join to form what? A:

OPTIONS:
- clots
- arteries
- glands
- veins

Answer:
veins