Food and Energy

Question 1

It is known that complex carbohydrates provide more sustained energy over time than simple sugars such as sucrose. Complex carbohydrates are polysaccharides, which are long chains of smaller sugar molecules bonded together. Simple sugars are monosaccharides that contain only one molecule. Why do complex carbohydrates provide more energy over time versus simple carbohydrates?

Revolt · Accepted Answer

Complex carbohydrates have more chemical bonds to break than simple sugars, which takes longer for the body to digest and provides more units of energy for the body to use.

Question 2

Lawrence is a long distance runner on the school’s track and field team. Proper nutrition is very important for athletes so Lawrence wants to make the right food choices before a big track meet. Given what you know about how food is broken down to provide energy in the body, which is the best choice for Lawrence to eat before his event?

Revolt · Accepted Answer

a supplement bar that provides 500 Calories composed of complex sugars

Question 3

It is generally acknowledged that as human beings age, it becomes more difficult for them to lose weight, or even maintain their current weight. People find they have to eat less and/or exercise more to maintain a healthy weight. Which is the most likely explanation of why weight loss/maintenance becomes more difficult as people age?

Revolt · Accepted Answer

As humans age, they becomes less active and use their muscles less; therefore, less chemical energy is converted to thermal energy.

Question 4

Cecilia is looking at a nutrition label on a package of macaroni and cheese. She is trying to eat foods that have less than 25% of the total calories from fat. She knows that 1 gram of fat provides 9 Calories. The label shows this information:Total Calories per serving 400 Calories Total grams of fat 12 grams Based on these numbers, how many Calories come from fat and does this food meet Cecilia’s requirement?

Revolt · Accepted Answer

There are 108 Calories from fat, so this does not meet Cecilia’s requirement.

Question 5

Why do human beings consume food?

Revolt · Accepted Answer

Food provides nutrients.

Question 6

Consider this nutrition label. An acceptable value for adults is to derive 30% of their calories from fat each day. One method to reach this goal is to ensure that each food eaten during the day is around 30% fat calories. Which correctly explains why this food does or does not meet that goal?

Revolt · Accepted Answer

This food does not meet the requirement as the number of calories from fat is actually 75% of the total calories per serving.

Question 7

Food is important for growing and repairing tissues in the body. By which process is food broken down into nutrient molecules?

Revolt · Accepted Answer

digestion

Question 8

Most foods today contain a nutrition label on the packaging, which provides important information for the consumer. Which is one piece of information that can be found on a nutrition label?

Revolt · Accepted Answer

the number of calories in a serving size

Question 9

The human body uses many different kinds of minerals, but there six that are considered essential. Which group is made up of only essential minerals?

Revolt · Accepted Answer

sodium, calcium, and magnesium

Question 10

Vegetarians do not eat animal products but rather derive their protein from plant sources.Which type of protein do vegetarian food sources lack?

Revolt · Accepted Answer

complete

Food and Energy Answers

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