Protein

Open Ended

What are some important roles that proteins play in the human body?

Multiple Choice

Why are proteins considered essential for living organisms?

• They provide energy for all cellular activities

• They are the main structural and functional molecules in cells

• They are only used for storage of genetic information

• They are not important for life processes

Multiple Choice

Which of the following is NOT a function or property of protein mentioned in the lesson objectives?

• Helps in muscle growth

• Acts as a catalyst in chemical reactions

• Can be easily destroyed by strong heating

• Provides energy for photosynthesis

Multiple Choice

What are the four main groups of nutrients that should be included in a daily diet for good health?

• Proteins, carbohydrates, fats, vitamins and minerals

• Proteins, sugars, water, fiber

• Carbohydrates, fiber, vitamins, water

• Fats, fiber, sugars, minerals

Open Ended

Explain the importance of protein in the human diet and its role in maintaining health.

Multiple Choice

Which of the following foods are sources of animal protein?

• Eggs, chicken, fish, pork

• Beans, lentils, nuts, rice

• Tomatoes, lettuce, carrots, potatoes

• Milk, cheese, yogurt, tofu

Multiple Choice

Which of the following foods contains the most protein?

• Meat and vegetables

• Fish

• Purple cabbage juice

• Egg

• Banana

Open Ended

Why is it important to supplement enough protein for the body?

Multiple Select

Which statements about the role of protein in the human body are correct?

• Protein helps maintain life.

• Protein enhances health.

• Protein is not important for humans.

• Protein is only found in animal products.

Open Ended

Explain the general structure of a protein as shown in the diagram.

Multiple Choice

Which type of bond connects amino acids in a protein molecule?

• Hydrogen bond

• Peptide bond

• Ionic bond

• Disulfide bond

Multiple Select

Which statements are true about proteins based on the images?

• Proteins are made of amino acids.

• Proteins have a simple structure.

• Proteins have a large molecular mass.

• Proteins are formed by peptide bonds.

Multiple Choice

What happens to proteins in the stomach and intestines during digestion?

• They are absorbed directly into the blood.

• They are hydrolyzed into simpler substances.

• They remain unchanged.

• They are converted into fats.

Multiple Choice

Which of the following is the product of heating protein in an acidic or basic solution?

• Amino acids mixture

• Fatty acids

• Glucose

• Starch

Open Ended

When simple proteins (made up of amino acids) are hydrolyzed, what compound is obtained?

Multiple Select

Which steps are involved in conducting Experiment 1: Coagulation?

• Prepare two clean test tubes and label them (1) and (2).

• Add about 3 mL egg white to each test tube.

• Heat test tube (1) gently.

• Add drops of HCl solution to test tube (2).

Open Ended

Explain why some proteins dissolved in water form colloidal solutions and precipitate when heated or chemicals are added.

Open Ended

What is one important function of proteins in living organisms?