Nutrition and Body Functions

The video discusses the four essential chemicals of life: carbohydrates, fats, proteins, and water. It explains their roles in energy storage, bodily functions, and health impacts. The video also covers testing methods for these chemicals and concludes with a preview of the next topic on plant nutrition.

What are the two types of carbohydrates mentioned in the video?

• Simple sugars and complex sugars

• Monosaccharides and disaccharides

• Glucose and fructose

• Starch and cellulose

What is the simplest form of carbohydrates?

• Monosaccharides

• Oligosaccharides

• Disaccharides

• Polysaccharides

Which type of fat is beneficial and should be consumed in greater amounts?

• Saturated fat

• HDL cholesterol

• LDL cholesterol

• Trans fat

Which type of fat is usually found in fish oils and vegetable oils?

• Saturated fat

• Unsaturated fat

• Trans fat

• Cholesterol

What is the primary function of proteins in the body?

• To store energy

• To build and repair cells

• To insulate the body

• To provide immediate energy

What is a symptom of protein deficiency mentioned in the video?

• Coronary heart disease

• Diabetes

• Kwashiorkor

• Obesity

What percentage of an adult's body weight is composed of water?

• 70%

• 60%

• 80%

• 50%

What is one of the functions of water in the body?

• To act as a solvent

• To store energy

• To build muscle

• To insulate the body

Which test is used to detect the presence of carbohydrates in food?

• Ethanol test

• Biuret test

• Benedict's test

• Iodine test

How many kilojoules of energy does one gram of fat provide?

• 17.1 kJ

• 18.2 kJ

• 38.9 kJ

• 25.0 kJ