Basic Information of Daily Science Inventions and

226. Enzymes and anti-bodies are mainly made of---

  • ক. Carbohydrate
  • খ. Fats
  • গ. Proteins
  • ঘ. Vitamins

উত্তরঃ Proteins

বিস্তারিত

227. The atom is made of---

  • ক. Protons and Quarks
  • খ. Neutrons, Gamma Rays and Positrons
  • গ. Protons, Neutrons and Electrons
  • ঘ. Positrons, Neutrons and Electrons

উত্তরঃ Positrons, Neutrons and Electrons

বিস্তারিত

228. Ozone depletion is caused by----

  • ক. Carbon monoxide
  • খ. Carbon dioxide
  • গ. Chloroflurocarbon
  • ঘ. Mercuric Oxide

উত্তরঃ Chloroflurocarbon

বিস্তারিত

229. A Biologist specializing in the study of insects is called---

  • ক. an herpetologist
  • খ. a paleontologist
  • গ. an entomologist
  • ঘ. an ornithologist

উত্তরঃ an entomologist

বিস্তারিত

230. Acquired Immune Deficiency Syndrome (AIDS) is caused by

  • ক. Bacteria
  • খ. Fungus
  • গ. Virus
  • ঘ. None of the above

উত্তরঃ Virus

বিস্তারিত

231. Which one of these planets is nearest to the earth?

  • ক. Murcury
  • খ. Venus
  • গ. Neptune
  • ঘ. None of these above

উত্তরঃ Venus

বিস্তারিত

232. Entomology is the science that studies--

  • ক. Human behavior
  • খ. Insects
  • গ. The formation of rocks
  • ঘ. None of the above

উত্তরঃ Insects

বিস্তারিত

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