A girl is celebrating her seventh birthday. Each guest is served one large slice of chocolate cake, a hamburger, French fries, and some oranges. Identify the food groups mentioned above.
If one slice of chocolate cake contains 35g of carbohydrate, 15g of fat and 5g of protein, calculate the kilocalories that each slice of cake contains.Identify all the food groups that form a part of a balanced diet along with their sources.
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Well, lets see here, what we need to know is the amount of calories per carbohydrate, protein, and fat. There are 4 calories for each gram of carbohydrate and protein, and there are 9 calories for each gram of fat. So if there are 35 grams of carbohydrates, 4 times 35 would equal 140 calories. For protein, 4 times 5 grams would equal 20 calories, and for fat, 9 times 15 would equal 135 calories. Add all that together (140 + 20 + 135) and you get 295 calories per slice of chocolate cake. Divide that by 1000 to get the kilocalories, and you get .295 kilocalorie.
As far as food groups go, the chocolate cake is primarily carbohydrates and fat, while the hamburger would be mostly protein and fat (the bun would be carbohydrates). The orange would be carbohydrates, while the french fries would be carbohydrate for the starch in the potatoes, and fat from the oil they were fried in.
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