Technology PYQ — Page 7

Which one of the following statements is correct?

Consider the following statements: 1. Molasses is a by-product of sugar production process. 2. Bagasse obtained in the sugar mills is used as a fuel in the boilers to generate steam for the sugar factories. 3. Sugar can only be produced from sugarcane as the raw material. Which of these statements are correct?

With reference to the latest developments in stem cell research, consider the following statements: 1. The only source of human stem cells are the embryos at blastocyst stage. – 2. The stem cells can be derived without caisining destruction to blastocysts. – 3. The stem cells can regenerate themselves in vitro virtually forever. 4. Indian research centres also created a few cell lines which can be developed into many types of tissues. Which of these statements are correct?

Match List-I (Scientists) with List-II (Achievements) and select the correct answer using the codes given below: | List-I (Scientists) | | List-II (Achievements) A. | Arber and Smith | 1. | Developed transgenic plants with Agrobacterium T-DNA B. | Feldman | 2. | Discovered endonucleases C. | Mullis | 3. | Discovered reverse transcriptase D. | Temin and Baltimore | 4. | Discovered polymerase chain reaction Codes: A B C D

The American multinational company, Monsanto, has produced an insect-resistant cotton variety that is undergoing field trials in India. A toxic gene from which one of the following bacteria has been transferred to this transgenic cotton?

"Athlete's Foot" is a disease' caused by

Which of the following features of DNA makes it uniquely suited to store and transmit genetic information from generation to generation?

Match List-I with List-II and select the correct answer using the codes given below: | List-I (Achievement in genetics) | | List-II (Scientists) A. | Discovery of transduction and conjugation in bacteria | | Khurana B. | Establishing the sex-linked inheritance | 2. | Kornberg C. | Isolation of DNA polymerase from E coli | 3. | Lederberg D. | Establishing the complete genetic code | 4. | Morgan | | 5. | Ochoa Codes: ABCD

Match List I with List II and select the correct answer using the codes given below the lists: | List-I (Characteristic) | | List-II (Particle) A. | Zero mass | 1. | Positron B. | Fractional charge | 2. | Neutrino C. | Fractional spin | 3. | Quark D. | Integral spin | 4. | Photon

Antigen is a substance which–

The memory of a computer is commonly expressed in terms of Kilobytes or Megabytes. A byte is made up of

Hybridoma technology is a new biotechnological approach for commercial production of

Lathyrism is caused by excessive consumption of

Assertion (A): Insect resistant transgenic cotton has been produced by inserting Bt gene. Reason (R): The Bt gene is derived from a bacterium.

Assertion (a): Dolly was the first cloned mammal. Reason (R): Dolly was produced by in vitro fertilization.

Indian farmers are unhappy over the introduction of "Terminator Seed Technology" because the seeds produced by this technology are expected to:

Which one of the following types of coal contains a higher percentage of carbon than the rest?

Consider the following statements regarding asteroids: 1. Asteroids are rocky debris of varying size orbiting the sun 2. Most of the asteroids are small but some have diameter as large as 1000 km 3. The orbit of asteroids lies between the orbits of Jupiter and Saturn of these statements:

Match List-I with List-II and select the answer using the codes given below: | List-I (Disease) | | List-II (Organism) A. | Malaria | 1. | Fungi B. | Poliomyelitis | 2. | Bacteria C. | Tuberculosis | 3. | Virus D. | Ringworm | 4. | Protozoan

The satellites of which one of the following countries have helped in the preparation of a detailed and complete map of Antarctica?

One astronomical unit is the average distance between:

Which one of the following elements is essential for the construction of nuclear reactors?

Antigen is a substance which

The tail of a comet is directed away from the sun because: