EVERYDAY SCIENrcE                                      r

O Choose the correct answer.

  1. Glycogen is an example of:

(a) Carbohydrate            (b) Peptide                         (c) Lipid                             (d) Steroids

  1. The cell structure that controls movements of material into and out of the cell is the:

(a) Mitochondria              (b) Cell membrane         (c) Centriole                     (d) Golgi body

  1. The unit that co-ordinates different devices of the computer system is:

(a) ALU                                                                              (b) Register

(c) Control unit                                                             (d) Logical instructions

  1. _______ manages and controls various functions of the computer.

(a) In putout put device                                                 (b) Main memory

(c) Operating system                                                     (d) Both (a) and (b)

  1. The number of natural satellite orbiting around the planet Mars is:

(a) 1                                      (b) 2                                     (c) 5                                      (d) 14

  1. _______ is an example of mechanical digestion.

(a) Glycolysis                                                                 (b) Hydrolysis

(c) Mastication                                                               (d) Defecation

  1. Botanically a fruit is a:

(a) Ripened ovule                                                            (b) Mature stigma

(c) Ripened ovary                                                          (d) Fully mature flowering stalk

  1. The vocal folds are part of the:

(a) Nasal cavity                (b) Larynx                         (c) Trachea                         (d) Laryngopharynx

  1. Blood glucose is raised by all of the following except:

(a) Glycogen                      (b) Insulin                         (c) Cortisol                       (d) Epinephrine

  1. The famous book Al-Qanoon was written by the Muslim scientist:

(a) Jabir-ibn-Hayan                                                        (b) Zakariya al-Rani

(c) Abu Ali Sina                                                             (d) Abul Qasim Majreeti

Name the following:

  • A disease caused by deficiency of vitamin C. (Scurvy)
  • The major fossil fuel impurity. (Sulphur)
  • The instrument used to measure degree of humidity. (Hygrometer)
  • An ore of Zinc. (Sphalerite)
  • Two most abundant elements present in the sun. (Hydrogen and Helium)
  • The metal atom present in chlorophyll. (Magnesium)
  • The gland responsible for the secretion of the hormone estrogen. (Pituitary Gland)
  • An element used in the doping of silicon for the preparation of a p-type semiconductor. (Boron)
  • A synthetic fibre which is a polyamide. (Nylon)
  • Major constituent of Biogas. (Methane)
  • Fill in the blanks with suitable words:
  • Heavenly objects which resemble stars and emit radio waves are called___ . (Pulsars)
  • ____ are hot springs that erupt hot water and steam from time to time. (Geysers)
  • Hot liquid rock beneath the earth’s surface is called___ . (Magma)
  • The first simple microscope was invented by____ . (Zacharis Janseen)
  • _______ is the power house of the cell.    (Mitochondria)
  • Ability of the air to absorb long heat waves from the earth after allowing the short waves from sun to

pass through it is known as______ . (Greenhouse effect)

  • Computer works on the principle introduced by the Muslim scientist . (Musa Al-
  • Coldest planet of the solar system is___ . (Neptune)
  • The rupture of red blood cells is called___ . (Hemolysis)
  • Muslim scientist Ali Ibn Al-Tabari is famous for his work on___ . (Biology)
  • Which of the following statements are true and which are false:
  • Haploid cells result from the process of mitosis. (False)
  • All stars are of the same colour. (False)
  • The left lung has two lobes while the right lung has three lobes. (True)
  • The pulmonary veins return oxygenated blood to the right (False)
  • Muslim scientist Ibn-Haitham is famous for his work on (False)
  • Our galaxy Milky Way is shaped like a large thick concave lense with a large central bulge. (False)
  • DNA has a double helix structure while the RNA does not have a double helix structure. (True)
  • The normal temperature of human blood is 37° C (98.6F) (True)
  • The liver is a part of gastrointestinal tract. (False)
  • Movement of tectonic plates may cause eruption of a volcano. (True)