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Consider the following statements:
1. The direction of current is taken opposite to the direction of flow of electrons.
2. Resistance is a property of a conductor that generates heat in the electrical circuit.
3. The SI unit of electric current is Amperes.
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Which of the following statement(s) is/are correct?
1. The B-lymphocytes in human body produce an army of proteins in response to pathogens into our blood to fight with them.
2. The T-lymphocytes mediate cell-mediated immunity (CMI) which is responsible for the graft (transplanted body-part) rejection.
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In context of ‘Scrub Typhus’, which of the statements given below is/are correct?
1. It is a disease caused by a bacterium and it spreads to people through bites of infected chiggers.
2. Antibiotics are most effective form of medicine to cure this disease.
3. Recently, a special vaccine has been developed for its prevention by the Department of Biotechnology.
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Unicellular organism are unique because they are made up of a single cell only. Which of the following is/are examples of unicellular organisms?
1. Amoeba
2. Yeast
3. Bacteria
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Match the following pairs with reference to different types of ‘Phyla’ with their most distinctive features:
PHYLA | MOST DISTINCTIVE FEATURE |
1. Ctenophora | A. Body segmentation like rings. |
2. Platyhelminthes | B. Comb plates for locomotion. |
3. Annelida | C. Presence of jointed appendages. |
4. Arthropoda | D. Flat body, suckers |
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Consider the following statements:
1. The direction of current is taken opposite to the direction of flow of electrons.
2. Resistance is a property of a conductor that generates heat in the electrical circuit.
3. The SI unit of electric current is Amperes.
Select the correct answer using the code given below:
Which of the following phenomena are caused due to ‘atmospheric refraction’?
1. Flickering of objects seen through a turbulent stream of hot air rising above a fire.
2. The reddening of the sun at sunrise and the sunset.
3. The apparent flattening of the Sun’s disc at sunrise and sunset.
4. The Sun is visible to us about 2 minutes before the actual sunrise, and about 2 minutes after the actual sunset.
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Unicellular organism are unique because they are made up of a single cell only. Which of the following is/are examples of unicellular organisms?
1. Amoeba
2. Yeast
3. Bacteria
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Consider the following sources of protein:
1. Meat
2. Fish
3. Egg
4. Milk
Select the correct sequence of the sources of protein mentioned above in human diet in terms of maximum protein content:
Vaccines are now available for preventing a whole range of infectious diseases. Which among the following infectious diseases are preventable by the use of vaccine?
1. Polio
2. Measles
3. Whooping cough
4. Human Papilloma Virus (HPV)
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