Biochemistry

Vitamin D deficiency can lead to several health issues, and one of the primary diseases caused by a lack of Vitamin D is Rickets. Rickets is characterized by weakened or softened bones in children, leading to bone deformities and growth disturbances.

Here's how Vitamin D is related to Rickets:

• Vitamin D plays a crucial role in maintaining optimal bone health by facilitating the absorption of calcium and phosphorus in the body.
• When there is insufficient Vitamin D, calcium absorption in the gut decreases, leading to low calcium levels in the blood.
• To compensate for low blood calcium, the body mobilizes calcium from bones, resulting in weakened and soft bones, a condition known as Rickets in children.

Hence, the correct answer is: Rickets

In the context of biology and agriculture, the classification of carbohydrates includes various types based on their complexity and structure. Starch, a common carbohydrate, is a vital energy storage compound in plants. Its classification can be understood through the hierarchy of carbohydrate types:

Starch is composed of numerous glucose units linked together, forming a complex structure. This extensive chain of glucose makes starch a polysaccharide. Therefore, among the options given:

• Monosaccharides - Incorrect
• Oligosaccharides - Incorrect
• Disaccharides - Incorrect
• Polysaccharides - Correct

Conclusion: Starch is an example of polysaccharides because it consists of multiple glucose units bonded to form long chains. This classification highlights its role as a significant energy store in plants, facilitating sustained energy release when broken down.

Proteins are biological macromolecules that are essential for numerous functions in living organisms. These complex structures are polymers made up of repeating units called monomers. In the context of proteins, the monomers are:

Amino acids. These are organic compounds characterized by the presence of an amino group (-NH2), a carboxyl group (-COOH), a hydrogen atom, and a distinctive side chain all bonded to a central carbon atom. Through peptide bonds, amino acids are linked together to form polypeptide chains, which fold into specific three-dimensional shapes to become functional proteins.

None of the other options (Lipids, Nucleic acids, or Carbohydrates) serve as the building blocks of proteins. Each of them is a different type of macromolecule serving unique functions within biological systems.