Q:

What are first-class and second-class proteins?

A:

Quick Answer

First-class proteins are proteins found from animals, and second-class proteins are proteins found from plants. First-class proteins come from meat, eggs, fish and dairy products while non-animal related foods, like vegetables and fruits, provide second-class proteins.

Know More
What are first-class and second-class proteins?
Credit: Maximilian Stock Ltd Photolibrary Getty Images

Full Answer

Both types of proteins provide valuable nutrients as well as essential amino acids. Many of the amino acids that first- and second-class proteins provide aren't naturally made by the human body, which makes them very important to obtain through a healthy, balanced diet.

First-class proteins contain a necessary amount of these important amino acids, but second-class proteins only contain some of them. Because of this, vegetarians must be very careful about eating a balanced, nutritious diet as they could begin to suffer from protein deficiency. This is a very serious problem and it can lead to health issues. A sign of protein deficiency is when someone's abdomen begins to swell.

Growing children especially need protein as do pregnant mothers. Protein is essential to help children grow and be healthy, and since pregnant women are rearing another living human, they need lots of protein to keep themselves and their baby healthy and strong. Even mothers that have already had a child need to make sure they have plenty of protein in their diet because if they are breastfeeding, their body is processing lots of nutrients for the baby's sustenance and they need to replace those nutrients constantly in order to stay healthy themselves.

Learn more about Nutritional Content

Related Questions

  • Q:

    What does second-class post cost?

    A:

    The cost to mail a letter second class in the United Kingdom starts at 53 pence depending on its size and weight, and at 81 pence for international. Postage for parcels mailed second class starts at £2.80 for small packages and can go up to £28.50 for medium-size packages.

    Full Answer >
    Filed Under:
  • Q:

    What is the price of a second-class stamp?

    A:

    According to the Royal Mail Group, second-class stamp prices vary depending on their purpose. As of July 2014, a second-class stamp for a letter is 53 pence, and second-class postage for a large letter starts at 73 pence, small parcels start at ?2.80 and medium parcels start at ?5.20.

    Full Answer >
    Filed Under:
  • Q:

    Is a shovel a second-class lever?

    A:

    No, the shovel is a third-class lever. In such systems, the effort is positioned between the fulcrum and the load. Mechanics of using a shovel involve holding one end steady with a hand, making the fulcrum, while the other hand applies force, or effort, to pull up the load.

    Full Answer >
    Filed Under:
  • Q:

    What is a second-class honors degree?

    A:

    A second-class honors degree is part of the British undergraduate degree classification system that marks various levels of student achievement. The British undergraduate degree classification uses a scale system to categorize different grade point averages reached by students. Students are either awarded honors or not, depending on the grade they earn on the standard honors exam.

    Full Answer >

Explore