Which Of The Following Is Not A Function Of Proteins?

As you go through your education, one of the most likely questions you will see on tests or quizzes will be about protein and what it does. This is because protein is an important part of all six classes of food, so you need to know what it does. See the questions below;

Which of the following is not a function of proteins?

A) Insulation

B) Transport

C) Energy storage

D) Protection

The answer is C: Energy storage. Proteins have a wide range of functions in living organisms, but one of the things they don’t do is store energy. Proteins are large molecules made up of amino acids that are very important in many biological processes, like:

  • Insulation: some proteins such as the keratin in hair and nails, and collagen in the skin, provide structural support and protect cells from damage.
  • Transport: proteins such as hemoglobin in red blood cells carry oxygen through the blood.
  • Protection: proteins such as antibodies provide immunity by recognizing and neutralizing foreign invaders such as bacteria and viruses.

What is Proteins?

Proteins are big, complicated molecules that help the body do a lot of different things. They are important to the structure and function of every cell and take part in almost every process that happens inside a cell. Proteins are made up of smaller building blocks called amino acids, which are joined together through peptide bonds.

Proteins are also important for the growth and repair of body tissues, and they make up a lot of muscles, bones, cartilage, skin, and blood. They are also important for keeping the right balance of acid and base in the body and for making the immune system work.

It’s important to get enough protein in your diet to maintain good health; this can be obtained from both animal and plant-based sources, such as meat, fish, dairy, eggs, beans, lentils, and nuts.

What are the benefits of proteins?

Proteins are important macronutrients that the body needs and that have many health benefits. Some of the benefits of consuming enough protein include:

  1. Building and repairing muscle: Proteins are the building blocks of muscle, and consuming enough protein is crucial for muscle growth and repair, especially after exercise.
  2. Maintaining bone health: Proteins are important for bone health, as they help to form and maintain bone structure.
  3. Boosting immunity: Proteins are a key component of the immune system and help to protect the body from infection and disease.
  4. Regulating metabolism: Proteins help to regulate metabolism by controlling appetite, and helping to balance blood sugar levels.
  5. Promoting healthy skin, hair, and nails: Proteins are important for the health of skin, hair, and nails, and help to keep them strong and healthy.
  6. Supporting weight loss: High-protein diets can help with weight loss by controlling appetite, and helping to preserve muscle mass during weight loss.
  7. Improving heart health: Some studies suggest that high-protein diets may improve heart health by reducing blood pressure and cholesterol levels.
  8. Helping with digestion: Proteins help with the digestion of food and the absorption of nutrients.
  9. Aiding wound healing and recovery from injury: Proteins play an essential role in repairing and rebuilding tissues and are important for wound healing and recovery from injury.

What are the types of proteins and their functions?

There are many different types of proteins, each with its own unique function in the body. Some of the main types of proteins and their functions include:

  1. Structural proteins: These proteins provide structural support and protection for cells and tissues. Examples include collagen in skin and keratin in hair and nails.
  2. Transport proteins: These proteins transport molecules and ions throughout the body. Hemoglobin, which is in red blood cells and carries oxygen, and ceruloplasmin, which moves copper through the blood, are two examples.
  3. Enzymes: These proteins catalyze chemical reactions in the body. Examples include lactase, which breaks down lactose in milk, and pepsin, which breaks down proteins in food.
  4. Hormones: These proteins act as chemical messengers, transmitting signals between cells and controlling various bodily functions. Examples include insulin, which regulates metabolism, and growth hormone, which stimulates growth and cell reproduction.
  5. Antibodies: These proteins provide immunity by recognizing and neutralizing foreign invaders such as bacteria and viruses.
  6. Motor proteins: These proteins are responsible for muscle contraction and other types of movement. Examples include actin and myosin, which are found in muscle fibers.
  7. Storage proteins: These proteins store important molecules such as iron and other minerals. Examples include ferritin, which stores iron, and casein, which is a protein found in milk that can be used for food storage
  8. Signal transduction proteins: These proteins transmit signals across cell membranes and coordinate the activity of cells. Examples include G-proteins and receptor tyrosine kinases.
  9. Contractile proteins: These proteins are responsible for muscle contraction and other types of movement. Examples include actin and myosin, which are found in muscle fibers.


I hope that you find this post “Which of the following is not a protein function?” helpful in answering your questions with reasons.

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