Q.1
Which of the following statements about white blood cells is ?
  • They engulf and ingest pathogens
  • They expel the pathogens from the bloodstream via the liver
  • They produce antibodies which neutralize pathogens
  • They produce antitoxins to neutralize the effects of the toxins from pathogens
Q.2
Your body can develop a natural immunity to certain pathogens. What is the name of the cells responsible for this?
  • Lymphocytes
  • Leucocytes
  • Phagocytes
  • Virocytes
Q.3
What is produced by a lymphocyte that enables it to neutralize pathogens?
  • Antigens
  • Antipaths
  • Antibodies
  • Antibacts
Q.4
Which of the following statements is correct?
  • Passive immunity involves receiving antibodies
  • Antibiotics work because the prevent the toxins from being poisonous to the host
  • White blood cells produce antigens to protect the body
  • Viruses cause cholera and typhoid in poor areas of the world
Q.5
Which of the following also help your body defend itself against infection?
  • Mucus and cilia in the respiratory system
  • Hydrochloric acid in the stomach
  • Lysozyme (an enzyme) in tears
  • All three of the above
Q.6
Which of the following is one of the ways that white blood cells provide active immunity?
  • They destroy invading pathogens by eating them
  • They produce antibodies to destroy pathogens
  • They produce antitoxins that neutralize toxins from pathogens
  • They destroy pathogens by ingesting them
Q.7
Which of the following are the two main groups of white blood cells?
  • Phagocytes and lymphocytes
  • Stem cells and platelets
  • Macrophages and bacteriophages
  • Erythrocytes and monocytes
Q.8
The lymphocytes produce antibodies. How do antibodies work?
  • They penetrate inside the pathogen and destroy its nucleus
  • They penetrate inside the pathogen and change the chemical composition of the cytoplasm
  • They attach to the pathogens and cause them to clump together making it easy for phagocytes to find and ingest them
  • They attach to the pathogens and take them to the liver where they are destroyed
Q.9
Vaccination is used to immunize people against diseases. Pick the statement:
  • Edward Jenner is credited with the discovery of vaccination
  • Vaccines contain the antibodies needed to protect your body from infection
  • Each vaccine protects you from a specific disease
  • Some vaccines contain the pathogen that causes the disease
Q.10
Why are antibiotics no good for treating colds and 'flu?
  • Colds and 'flu are viral infections
  • Cold and 'flu mutate too quickly so the antibiotics only work for a very short time
  • Colds and 'flu are 'superbugs' and totally resistant to antibiotics
  • Antibiotics cannot work fast enough to treat colds and 'flu
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