Sweat, saliva, tears and mucus have

  • lysosomes
  • chromosomes
  • ribosome
  • Golgi bodies

Germs on living things can be killed by using

  • antiseptic
  • disinfectants
  • both a and b
  • antibiotics

The human skin is tough and water proof and germs cannot

  • penetrate through
  • stay on it
  • reproduce
  • enter from cut

AIDS, poliomyelitis, rabies, rubella are all

  • viral
  • bacterial
  • fungal
  • yeast

Germs on floor and non-living things are destroyed by

  • antiseptic
  • disinfectants
  • both a and b
  • antibiotics

A fungus which is used to make antibiotic is called

  • mould
  • yeast
  • penicillium
  • hyphae

Most of bacteria in food is killed in stomach by

  • HCl
  • NaCl
  • HNO
  • H2O

The examples of microscopic organisms are

  • bacteria
  • micro-scopic fungi
  • both a and b
  • virus

The cell wall of yeast is made up of

  • chitin
  • cellulose
  • water
  • salts

Prevention is better than

  • treatment
  • cure
  • medicine
  • exercise

Germs may enter the body via

  • mouth
  • skin
  • eyes
  • all of them

Bacteria can exists in shapes which are

  • spherical
  • rod
  • spiral
  • all of them

Living things which are too small to be seen with a naked eye are called

  • micro-organisms
  • unicellular organisms
  • multicellular organisms
  • complex organisms

The first antibiotic which was discovered by

  • Alexander Fleming
  • Lewis
  • Thomson
  • Lois Pasteur

Penicillium is used to treat infections which are

  • viral
  • bacterial
  • fungal
  • yeast

The outer layer of human skin is composed of

  • mucus
  • collenchymas cells
  • dead cells
  • transporting cells

Systems which open to external environment are protected from bacteria by presence of

  • mucus membranes
  • HCl
  • hairs
  • plug

The agents which are responsible to cause infection by micro-organisms are called

  • pathogens
  • DNA
  • antibody
  • antigen

Flu, cold and HIV are caused due to presence of

  • bacteria
  • virus
  • yeast
  • fungi

Mushrooms, yeasts, moulds and toadstools are examples of

  • bacteria
  • virus
  • fungi
  • algae
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