Food, Energy And Nutrition Practice Quiz

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2. What is a carbohydrate?

Unsaturated fat and saturated fat

Sweet and sour

Sugar and starch

When you feel like you need water

A carbohydrate is a type of nutrient that provides energy to the body. It is composed of sugar and starch. Sugar is a simple carbohydrate that is quickly broken down by the body for immediate energy, while starch is a complex carbohydrate that takes longer to break down and provides sustained energy. Carbohydrates are found in various foods such as fruits, vegetables, grains, and legumes. They are an essential part of a balanced diet and should be consumed in moderation.

Explanation

A carbohydrate is a type of nutrient that provides energy to the body. It is composed of sugar and starch. Sugar is a simple carbohydrate that is quickly broken down by the body for immediate energy, while starch is a complex carbohydrate that takes longer to break down and provides sustained energy. Carbohydrates are found in various foods such as fruits, vegetables, grains, and legumes. They are an essential part of a balanced diet and should be consumed in moderation.

3. How can you tell there was energy in the marshmallow?

When you eat it you get silly

When it burned it fizzed and turned black

It was soft after it burned

When the marshmallow burned, it fizzed and turned black. This reaction indicates that there was energy present in the marshmallow. The fizzing and blackening suggest a chemical reaction, which typically occurs when energy is released. Therefore, the observation of the marshmallow burning and fizzing indicates the presence of energy.

Explanation

When the marshmallow burned, it fizzed and turned black. This reaction indicates that there was energy present in the marshmallow. The fizzing and blackening suggest a chemical reaction, which typically occurs when energy is released. Therefore, the observation of the marshmallow burning and fizzing indicates the presence of energy.

4. Why did we use iodine?

To test for sugar

To test for salt

To test for sodium

To test for starch

We used iodine to test for starch because iodine reacts with starch to form a blue-black color. This reaction is a common method to identify the presence of starch in various substances.

Explanation

We used iodine to test for starch because iodine reacts with starch to form a blue-black color. This reaction is a common method to identify the presence of starch in various substances.

5. Why did we use the brown paper bag test?

To test for starch

To test for fat

To test for protein

To test for sugar

The brown paper bag test was used to test for fat because fat leaves a translucent mark on brown paper. When a food item containing fat is placed on a brown paper bag and left for some time, the fat from the food will seep through the bag, leaving a visible grease mark. This test was commonly used in the past to determine the fat content in food before more sophisticated methods were available.

Explanation

The brown paper bag test was used to test for fat because fat leaves a translucent mark on brown paper. When a food item containing fat is placed on a brown paper bag and left for some time, the fat from the food will seep through the bag, leaving a visible grease mark. This test was commonly used in the past to determine the fat content in food before more sophisticated methods were available.