Science Quize....... By Ashutosh (3 Minute Only For All Question)

Explanation
Foot and mouth disease is caused by a virus. Viruses are microscopic infectious agents that can only replicate inside living cells. They invade and take over the host's cells, using them to reproduce and spread. In the case of foot and mouth disease, the virus specifically targets cloven-hoofed animals such as cattle, pigs, and sheep. It spreads through direct contact with infected animals, contaminated objects, or even through the air. The virus causes painful sores and blisters in the mouth, on the feet, and sometimes on the udder or teats. It can have significant economic impacts due to livestock losses and trade restrictions.

Explanation
Chromosomes are the structures in which DNA is stored. They are thread-like structures made up of DNA and proteins, and they contain the genetic information that is passed down from parents to offspring. Chromosomes are located in the nucleus of cells and are responsible for carrying the genes that determine the traits and characteristics of an organism. Therefore, chromosomes are the correct answer for the storage of DNA.

Explanation
Fungi, except for yeast, are composed of fine threads called hyphae. Hyphae are long, branching structures that make up the body of a fungus. They are responsible for absorbing nutrients from the environment and can intertwine to form a network known as mycelium. This allows fungi to grow and spread through their surroundings.

Explanation
Bacteria mycoplasma is the smallest cell because it lacks a cell wall, making it smaller than other bacteria. It is a unique type of bacteria that can cause various infections in humans and animals. Despite its small size, it is still a fully functional cell capable of carrying out essential biological processes.

Explanation
The correct answer is hepatitis-B because it is the only option that is a type of hepatitis. Hepatitis-B is a viral infection that affects the liver and can cause both acute and chronic diseases. It is transmitted through contact with the blood or other body fluids of an infected person. Vaccination is available to prevent hepatitis-B and is recommended for all infants and at-risk individuals.

Explanation
BCG stands for Bacillus Calmette-Guérin, which is a vaccine used to prevent tuberculosis (TB). It is derived from a weakened strain of Mycobacterium bovis, a bacterium that causes TB in cattle. When administered to humans, the BCG vaccine stimulates the immune system to develop protection against TB. It is usually given to infants or children in countries where TB is prevalent. The other options mentioned in the question, DPT-hib, polio, and VACCINE-4, are unrelated to TB and do not provide protection against it. Therefore, the correct answer is BCG.

Explanation
Salmonella typhi is the correct answer because it is the bacteria that causes typhoid fever. Typhoid fever is a serious illness caused by the ingestion of food or water contaminated with the bacteria. It is characterized by symptoms such as high fever, abdominal pain, diarrhea, and sometimes a rash. Salmonella typhi is a gram-negative bacterium that primarily infects the intestinal tract and can be transmitted from person to person or through contaminated food and water. Proper sanitation and hygiene practices are essential in preventing the spread of this bacteria and the occurrence of typhoid fever.

Explanation
Pernicious anemia is a type of microcytic anemia caused by a deficiency of vitamin B12. It is characterized by the inability of the body to absorb vitamin B12 from the diet due to the lack of a specific protein called intrinsic factor. This deficiency leads to the production of abnormally small red blood cells, known as microcytic anemia. Pernicious anemia can cause various symptoms, including fatigue, weakness, shortness of breath, and pale skin. Cheilosis, which is the inflammation and cracking of the lips, can also be a symptom of pernicious anemia.