¿Qué son las calorías?

The video explains what calories are, their role in providing energy for body functions, and how they are measured. It discusses the concept of empty calories, which are high in energy but low in nutritional value, and provides examples like soft drinks and sweets. The process of energy release from food through chemical reactions is described, along with a method to calculate the energy content in food. Finally, the video emphasizes the importance of balancing calorific and nutritional values in a healthy diet.

What is a calorie?

• A unit of energy

• A type of vitamin

• A mineral found in food

• A type of carbohydrate

What does the term 'empty calories' refer to?

• Foods that are high in fiber

• Foods with no calories

• Foods low in calories and high in nutrients

• Foods high in calories but low in nutrients

Which of the following is an example of a food with empty calories?

• Whole grain bread

• Soft drinks

• Fresh fruits

• Vegetables

How is the energy in food released for use by the body?

• Through digestion

• By absorbing sunlight

• Through photosynthesis

• By breaking down food molecules and reacting with oxygen

What is the key to a healthy diet according to the video?

• Eating only low-calorie foods

• Balancing calorific and nutritional values

• Avoiding all high-energy foods

• Consuming only vitamins and minerals