AP Calorimetry

AP Calorimetry - AP Biology Calorimetry Background...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
AP Biology Calorimetry Background Information The amount of energy stored in food usually is measured in calories. The word “calorie” comes from the Latin word for heat. One dietary calorie is defined as the amount of energy it takes to raise the temperature of one gram of pure water one degree Celsius (one gram of water is equal to one mL of water). The calories shown on most food labels are written with an uppercase “C” and represent one kilocalorie or 1,000 (chemistry) calories. Carbohydrates, fats, and proteins, which are all organic macromolecules, are the primary sources of energy in foods. Each of these classes of nutrients provides a different amount of energy as food. Fats and oils provide about nine Calories (Cal) per gram. Carbohydrates and proteins each provide four Cal per gram. The amount of energy provided by each of these kinds of foods is independent of the source and presence of other nutrients. In other words, olive oil and peanut oil both provide about nine Cal per gram.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/05/2012 for the course BIOL 101 taught by Professor Lexicon during the Spring '11 term at Ohlone.

Page1 / 3

AP Calorimetry - AP Biology Calorimetry Background...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online