Disease caused by deficiency of Vitamin A is :
Night-blindness
Understanding Diseases Caused by Vitamin Deficiency
Our bodies need various vitamins to function properly and stay healthy. When we don't get enough of a specific vitamin, it can lead to health problems, often called deficiency diseases. This question asks about a specific disease linked to the lack of Vitamin A.
What is Vitamin A?
Vitamin A is an essential nutrient important for vision, growth, cell division, reproduction, and immunity. It's particularly crucial for maintaining healthy eyesight, especially in low light conditions.
Disease Caused by Vitamin A Deficiency: Night-blindness
One of the earliest and most common signs of Vitamin A deficiency is poor vision in dim light, a condition known as night-blindness or nyctalopia. Vitamin A is a component of rhodopsin, a pigment in the retina of the eye that is sensitive to light. Without enough Vitamin A, the eye cannot produce sufficient rhodopsin, impairing vision in low light.
Severe Vitamin A deficiency can lead to more serious eye problems like xerophthalmia, which can cause complete blindness. Therefore, ensuring adequate intake of Vitamin A is crucial for preventing night-blindness and other vision-related issues.
Examining Other Options
Let's look at the other options provided to understand which vitamin deficiency causes them:
- Beri-Beri: This disease is caused by a deficiency of Vitamin B1, also known as thiamine. It affects the nervous system and the cardiovascular system.
- Scurvy: This condition results from a deficiency of Vitamin C (ascorbic acid). It leads to symptoms like fatigue, gum disease, and skin problems.
- Rickets: Rickets is caused by a deficiency of Vitamin D, calcium, or phosphate. It softens and weakens bones, especially in children, leading to deformities.
Here is a summary of the vitamins and their associated deficiency diseases:
| Vitamin | Deficiency Disease |
|---|---|
| Vitamin A | Night-blindness, Xerophthalmia |
| Vitamin B1 (Thiamine) | Beri-Beri |
| Vitamin C (Ascorbic Acid) | Scurvy |
| Vitamin D | Rickets (in children), Osteomalacia (in adults) |
| Vitamin K | Bleeding disorders |
Based on the information, the disease caused specifically by the deficiency of Vitamin A is night-blindness. Understanding these vitamin deficiency diseases is important for maintaining good health through proper nutrition.
Important Questions from Biomolecules
The chemical name of Vitamin D 3is:
Which of the following food comes under complex carbohydrate?
I. Potatoes
II. Sweets
III. Pasta
IV. Wheat
Following are the pKa's of the ionizable groups in lysine
pKa 1 = 2.16 (α - carboxylic group)
pKa 2 = 9.06 (α - amino group)
pKa 3 = 10.54 (ε - amino group)
Which one of the following options represents the pl of lysine?
How many hydrogen bonds involving the backbone CO and NH can be observed in an α‐helix consisting of 15 amino acid residues?
In eukaryotic cells, covalently attached lipids help to anchor some water soluble proteins to the plasma membrane. One group of cytosolic proteins are anchored to the cytosolic face of membrane by a fatty acyl group (e.g. myristate or palmitate). These groups are generally covalently attached to which amino acids present at the N‐terminus of the polypeptide chain?
