Question Discussion & Solution

The correct answer is Fermentation.

Key Points

• Fermentation:
  • The biological process, in which sugar molecules are converted into ethyl alcohol and carbon dioxide with the help of some microbes like yeast and bacteria is called alcohol fermentation.
  • It is an anaerobic process. i.e. it occurs in the absence of oxygen.
  • The process is governed by the enzyme alcohol dehydrogenase
  • Alcoholic fermentation has many uses such as for the production of alcoholic beverages, ethanol fuel, and bread cooking.

Additional Information

• Moulding:
  • ​Moulding is a typical process in which a type of fungus that grows surface of fruits and vegetable.
  • These tubular branches have multiple, genetically identical nuclei, yet form a single organism, known as a colony.
  • In contrast, yeast is a type of fungus that grows as a single cell.
• Nitrogen Fixation:
  • Nitrogen fixation is the chemical process by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle. 
  • Atmospheric nitrogen is fixed by several methods like biological N2 fixation, Industrial N2 fixation & Electrical N2 fixation.
  • It is a necessary process, as the fixed nitrogen is used in the biosynthesis of several organic compounds like amino acids, proteins, nucleic acids, etc.
• Transcription:
  • ​The process of copying genetic information from one strand of DNA into RNA is termed transcription or mRNA synthesis.
  • The process of transcription begins when an enzyme called RNA polymerase attaches to the template DNA strand and begins to catalyze the production of complementary RNA.
  • It is completed in three steps Initiation, Elongation & Termination.

Concept:

Vitamins:

• Vitamins are organic compounds that are present in minute amounts in natural foodstuffs.
• Most vitamins come from food because the body either does not produce them or produces very little.
• Vitamins are of two types.
  • Fat-soluble vitamins- Vitamins A, D, E, K.
  • Water-soluble vitamins- Vitamin C and all the B vitamins. 

• There are 13 vitamins - A, C, D, E, K, and B vitamins (thiamine, riboflavin, niacin, pantothenic acid, biotin, B6, B12, and folate), each of them have a different job.
• Vitamin A, D, E, K are Fat-Soluble vitamins and are stored in fat cells while vitamins B and C are water-soluble vitamins that are not stored in your body.
• The liver acts as a storage site for vitamin A, D, E, K, and B12 for the times when they may be lacking in the diet.
• Vitamin D acts as a hormone, produced by the kidneys it helps to control the concentration of calcium in the blood and is vital for the development of strong bones.
• Water-soluble vitamins like Thiamine, folate, biotin, riboflavin are synthesized by gut bacteria.

Explanation:

• Vitamin E is a mixture of four vitamins called α, β, γ and δ tocopherols among which α tocopherol is the most active.
• Characteristics:
  • Light yellow fat soluble in oils.
  • Stable to heat and oxidation.
• Sources are cotton seed oil, maize oil, peanut oil and wheat germ oil.
• Deficiency causes damage to the reproductive system.

Hence, Vitamin E is also called tocopherol.

Additional Information 

• Riboflavin is vitamin B₂.
• Calciferol is vitamin D.
• Thiamine is vitamin B₁.

The correct answer is Amlanand Ghosh.

Key Points

• Prof Amlanand Ghosh excavated the Kalibangan site in 1952.
• The Kalibangan civilization is supposed to older than 4000 BC.
• This Rajasthan civilization was the first metropolis state in India.
• Kalibangan lies along with the left Bank of the dried-up bed of river Ghaggar.
• The site contains both pre-Harappan and Harappan remains, and therein can be seen the transition between the two cultures.
• Although the pre-Harappan culture worked copper and produced pottery, it had no writing system, and its ruins lack the orderly layout and use of baked brick that is found in the later Harappan sites.
• The Harappan remains include a cemetery and a fortified citadel. 

Additional Information

• Ratna Chandra Agrawal: 
  • Bhinmal Civilization was first founded by Ratna Chandra Agrawal in 1953-54 AD.
  • Bhinmal civilization is founded in the Jalore District of Rajasthan.
• Ratan Lal Mishra: 
  • Ganeshwar civilization was first founded in 1977 by historian Ratan Lal Mishra.
  • This Ganeshwar civilization is more than 4000 years old and the estimated time period was 2500 – 2000 BC.

The correct answer is Liver.

Key Points

• Excessive consumption of alcoholic drinks causes damage to the Liver.
  • Alcohol is readily absorbed from the digestive tract, and up to 98% is metabolised in the liver.
  • Each liver cell contains three pathways for alcohol metabolism.
  • All of these result in the production of a highly toxic metabolite which can contribute to liver cell damage.
  • With regular alcohol use, the regenerative ability of liver cells may be inhibited and lead to sustained liver damage.
  • Long term heavy alcohol use may lead to fat accumulation in the liver, which may progress to alcoholic hepatitis, or liver cirrhosis.
  • Over time, excessive alcohol use can lead to the development of chronic diseases and other serious problems including -
    • High blood pressure, heart disease, stroke, liver disease, and digestive problems. 

Additional Information

• Kidney:
  • Healthy kidneys remove wastes and extra fluid from your blood.
  • But when your kidneys fail, wastes and extra fluid can build up in your blood and make you feel sick. 
  • Kidneys can become damaged from a physical injury or a disease like diabetes, high blood pressure, or other disorders.
  • High blood pressure and diabetes are the two most common causes of kidney failure.
  • Kidney failure does not happen overnight.
• Lungs:
  • Chronic alcohol abuse and heavy drinking can greatly increase the risk of several pulmonary conditions.
    • including lung disease, alcoholic pneumonia, acute lung injury, and acute respiratory distress syndrome.
  • Smokers are more likely than nonsmokers to develop heart disease, stroke, and lung cancer.
    • Smoking can cause lung disease by damaging your airways and the small air sacs (alveoli) found in your lungs.
    • Lung diseases caused by smoking include COPD, which includes emphysema and chronic bronchitis.
• Heart:
  • Smokers are at greater risk for diseases that affect the heart and blood vessels.
  • Increases in your blood pressure can also be caused by weight gain from excessive drinking.
  • Heavy drinking weakens the heart muscle, which means the heart can't pump blood as efficiently.
    • It's is known as cardiomyopathy and can cause death, usually through heart failure.

The correct answer is 1526.

• The first battle of Panipat was fought in 1526.

Key Points

• The First Battle of Panipat (21 April 1526) fought near a small village of Panipat Haryana.
• The battle was fought between the invading forces of Zahir-ud-din Babur and Lodi Empire during the rule of Ibrahim Lodi.
• The Mughal forces of Babur, the ruler of Kabulistan, defeated the ruling army of Ibrahim Lodi, Sultan of Delhi.
• Babur’s tactics of Tulughma and Araba led him to victory.

Additional Information

• Tulughma: it means dividing the whole army into various units, viz. the Left, the Right and the Centre.
• Araba: The centre forward division was then provided with carts which were placed in rows facing the enemy and tied to each other with animal. 
• The Second Battle of Panipat was fought between the forces of Samrat Hem Chandra Vikramaditya and  the army of Akbar, on November 5, 1556
• The Third Battle of Panipat took place on 14 January 1761, at Panipat between the Maratha Empire and the King of Afghanistan, Ahmad Shah Durrani.