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Recombinant DNA Technology (Genetic Engineering) Allows Genes To Be Transferred

Recombinant DNA technology (Genetic Engineering) allows genes to be transferred 1. across different species of plants 2. from animals to plants 3. from microorganisms to higher organisms Select the correct answer using the codes given below.(2013) a) 1 only b) 2 and 3 only c) 1 and 3 only d) 1, 2 and 3 Answer: […]

What is/are the Implication/ implications of the Creation of Antimatter?

A team of scientists at Brookhaven National Laboratory including those from India created the heaviest antimatter (anti-helium nucleus). What is/are the implication/ implications of the creation of antimatter? 1. It will make mineral prospecting and oil exploration easier and cheaper. 2. It will help probe the possibility of the existence of stars and galaxies made […]

What Prevents Them From Reaching the Surface of the Earth?

Electrically charged particles from space travelling at speeds of several hundred km/sec can severely harm living beings if they reach the surface of the Earth. What prevents them from reaching the surface of the Earth?(2012) a) The Earth’s magnetic field diverts them towards its poles b) Ozone layer around the Earth reflects them back to […]

What is the Difference Between Asteroids and Comets?

What is the difference between asteroids and comets? 1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material. 2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury. 3. Comets show a perceptible glowing […]

How Do Antioxidants Help A Person Maintain Health and Promote Longevity

Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?(2011) a)They activate the enzyme necessary for vitamin synthesis in the body and help prevent vitamin deficiency b) They prevent excessive oxidation of carbohydrates, fats […]