Title: Experiment 4 Quiz
Course: Food Analysis Labs > Section: Course Content

Q: Which of the following is not a reason that minerals are an important part of foods?
- Minerals are required for normal metabolism.
- Some minerals are toxic at high levels.
- Minerals are an important source of calories in food.
- Interactive effects with the processing and texture of some foods.
A: Minerals are an important source of calories in food.

Q: Which of the following are examples of macro-minerals:
- calcium
- phosphorus
- potassium
- all of the above
A: all of the above

Q: Which of the following are examples of trace minerals:
- iron
- sodium
- chlorine
- sulfur
A: iron

Q: The quality of water, with great variance in mineral composition and considerable variation in effects on food processing, is a major safety and quality factor with regard to mineral analysis.
- True
- False
A: True

Q: Fortification of some foods has allowed addition of minerals above levels ever expected naturally.
- True
- False
A: True

Q: Which of these three methods are not traditional methods of mineral analysis?
- pH measurement
- Complexometric titrations
- Precipitation titrations
- Colorimetric methods
A: pH measurement

Q: Sample preparation concerns include contamination during sample preparation, such as:
- Comminution
- Glassware cleaning methods
- Water
- All of the above
A: All of the above

Q: Usually, traditional methods provide rapid analysis, with accuracy, at minimal cost.
- True
- False
A: True

Q: If higher sensitivity is required, or if it is necessary to know the entire spectrum of minerals in a sample, modern instrumentation may be best.
- True
- False
A: True

Q: When using the Ion Sensitive Electrode to test your sports drink samples, which of the following is not true?
- Sensing and reference electrodes are placed in a solution that contains the element of interest.
- You can use either a chloride or a sodium ion sensitive electrode.
- The voltage between the sensing and reference electrodes relates to the activity of the reactive species.
- None; These are all true about using the ion sensitive electrodes to test your sports drink samples.
A: None; These are all true about using the ion sensitive electrodes to test your sports drink samples.