Macronutrients

Macronutrients are essential nutrients that provide energy and are required in relatively large amounts by the body. There are three main types of macronutrients: carbohydrates, proteins, and fats.

Carbohydrates

Carbohydrates are the body's primary source of energy. They are found in foods such as bread, rice, pasta, fruits, and vegetables. Carbohydrates are broken down into glucose, which is used by the body for fuel. It is recommended that about 45-65% of total daily calories come from carbohydrates.

Proteins

Proteins are essential for the growth and repair of tissues in the body. They are made up of amino acids, which are the building blocks of protein. Good sources of protein include meat, fish, eggs, dairy products, legumes, and nuts. It is recommended that about 10-35% of total daily calories come from protein.

Fats

Fats are a concentrated source of energy and are important for the absorption of fat-soluble vitamins. There are different types of fats, including saturated fats, unsaturated fats, and trans fats. Sources of healthy fats include avocados, nuts, seeds, and olive oil. It is recommended that about 20-35% of total daily calories come from fat.

Study Tips

Understand the role of each macronutrient in the body.
Learn to identify sources of carbohydrates, proteins, and fats in different foods.
Calculate the percentage of macronutrients in a given food item or meal.
Understand the concept of "empty calories" and the importance of choosing nutrient-dense foods.
Practice reading nutrition labels to identify the macronutrient content in packaged foods.

◂Physics Worksheets and Study Guides High School. Thermodynamics

The resources above cover the following skills:

PHYSICAL SCIENCE (NGSS)

Matter and Its Interactions

Students who demonstrate understanding can:

Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.

Energy

Students who demonstrate understanding can:

Create a computational model to calculate the change in the energy of one component in a system when the change in energy of the other component(s) and energy flows in and out of the system are known.

Plan and conduct an investigation to provide evidence that the transfer of thermal energy when two components of different temperature are combined within a closed system results in a more uniform energy distribution among the components in the system (second law of thermodynamics).