Protein which renders a cell less susceptible to attack by viruses is called

Q.Protein which renders a cell less susceptible to attack by viruses is called
  1 Actomyosin
  2 Chloromycetin
  3 Hybridoma
  4 Inferon
  Ans:2
Q. Which of the following enzymes converts proteins into peptones?
  1 Pepsin
  2 Trypsin
  3 Erepsin
  4 Enterokinase
  Ans:1
Q. Approximately, how any times each day do our heart valves open and close normally?
  1 10000 times
  2 100000 times
  3 150000 times
  4 200000 times
  Ans:2
Q. What is common in AIDS, mumps and poliomyelitis?
  1 Young children get affected most readily
  2 No effective vaccine has yet been developed for them
  3 These are caused by viruses
  4 Their germs can be transmitted through blood transfusions
  Ans:3
Q. Should cars have bumpers that collapse under impact?
  1 Yes, since the offending car should get damaged and pay for the mistake
  2 No, since it would be very expensive to get the car repaired
  3 NO, since the colliding car would then ram into the occupants and kill them
  4 Yes, since they help to absorb the impact of a collision and keep the occupants safe.
  Ans:4
Q. Ice cubes are added to a glass of pure water and a glass of pure alcohol. The ice would be
  1 At a higher level in water
  2 At a higher level in alcohol
  3 At the same level in both
  4 Floating in alcohol and sinking in water
  Ans:4
Q. Which of the following types of radiations is absorbed by the upper layer of the atmosphere?
  1 Radio-waves
  2 Infrared
  3 Visible
  4 Ultraviolet
  Ans:2
Q. After long periods of use, a gray spot develops on the inside of a bulb. This is because
  1 The tungsten filament evaporates and collects there
  2 The heat of the bulb scorches the glass at the top
  3 Dust inside the bulb condenses on the top
  4 Glass undergoes a change due to the heat
  Ans:1
Q. Mud houses are cooler in summers and warmer in winters as compared to brick houses because
  1 Mud is a good conductor
  2 Mud is a bad conductor
  3 Mud is a poor insulator
  4 Evaporation of water causes cooling in summers and sunlight coming through holes causes warming in w
  Ans:4
Q. When the earth is at the maximum distance from the sun, it is called
  1 Aphelion
  2 Perihelion
  3 Equinox
  4 Sidereal
  Ans:1