The condition characterized by an enlarged thyroid gland due to dietary iodine deficiency is:
A. Graves' disease
B. Cretinism
C. Hashimoto's thyroiditis
D. Simple goiter
Answer: Option D
Solution (By JKExamLibrary)
Simple (endemic) goiter is caused by iodine deficiency, leading to low production of thyroid hormones. The pituitary secretes excess TSH, stimulating the thyroid to enlarge in an attempt to produce more hormones. Cretinism is congenital hypothyroidism, Graves' disease is autoimmune hyperthyroidism, Hashimoto's is autoimmune hypothyroidism. Iodized salt prevents goiter.
Explanation:
Isoelectric focusing (IEF) separates proteins in a pH gradient according to their isoelectric point (pI), the pH at which a protein has no net charge and stops migrating. SDS-PAGE separates by size, Western blotting detects specific proteins after separation, PCR amplifies DNA. IEF is often used in 2D gel electrophoresis.
Explanation:
The Murrah is a premier breed of water buffalo (Bubalus bubalis) originating from the Haryana and Punjab regions of India. It is renowned for its high milk yield, high fat content in milk, and adaptability to local conditions. It is one of the most important dairy breeds in India and has been exported worldwide for dairy improvement. Sahiwal and Holstein are cattle breeds.
Explanation:
Vitamin D (calciferol) promotes the absorption of calcium and phosphorus from the small intestine by inducing synthesis of calcium-binding proteins. It is synthesized in the skin upon exposure to UV light and then activated in the liver and kidneys. Deficiency leads to rickets in children and osteomalacia in adults. Vitamin A is for vision, C for collagen, B₁ for energy metabolism.
No comments yet. Be the first to start the discussion!