Biological Molecules

The video explores the importance of biological molecules in life processes, focusing on carbohydrates, proteins, and lipids. It explains that living organisms are composed of a small group of molecules, with water being the most abundant. Carbohydrates, lipids, and proteins are made of specific elements, with carbohydrates and lipids containing carbon, hydrogen, and oxygen, while proteins also include nitrogen and sometimes sulfur. Carbohydrates are categorized into monosaccharides, disaccharides, and polysaccharides, with examples like glucose and starch. Proteins are polymers of amino acids, crucial for various functions like enzyme activity and hormone production. Lipids, including triglycerides and cholesterol, serve as energy sources and structural components.

What is the most abundant molecule in the human body?

• Water

• Lipids

• Carbohydrates

• Proteins

Which of the following is a disaccharide?

• Glucose

• Fructose

• Cellulose

• Sucrose

What is the monomer unit of proteins?

• Amino acids

• Nucleotides

• Glucose

• Fatty acids

Which of these is a function of proteins in the body?

• Water retention

• Hormone production

• Energy storage

• Photosynthesis

Triglycerides are a type of lipid found in which of the following?

• Cell membranes

• Enzymes

• Dietary fats

• DNA