9th Grade Trivia: Prove Yourself By Taking This Biology Test!
The human body is well defended against infection. Sometimes pathogens like bacteria and viruses do get through, making you ill. There are physical barriers like your skin and the cilia (tiny moving hairs) and mucus that line your respiratory system. Natural defences is a branch of biology and we will look at it today.
- 1.
Your body can develop a natural immunity to certain pathogens. What is the name of the cells responsible for this?- A.
Lymphocytes
- B.
Leucocytes
- C.
Phagocytes
- D.
Virocytes
- 2.
Which of the following statements about white blood cells is incorrect?
- A.
They engulf and ingest pathogens
- B.
They expel the pathogens from the bloodstream via the liver
- C.
They produce antibodies which neutralise pathogens
- D.
They produce antitoxins to neutralise the effects of the toxins from pathogens
- 3.
What is produced by a lymphocyte that enables it to neutralise pathogens?
- A.
Antigens
- B.
Antipaths
- C.
Antibodies
- D.
Antibacts
- 4.
Which of the following statements is correct?
- A.
Which of the following statements is correct?
- B.
Antibiotics work because the prevent the toxins from being poisonous to the host
- C.
White blood cells produce antigens to protect the body
- D.
Viruses cause cholera and typhoid in poor areas of the world
- 5.
Which of the following also help your body defend itself against infection?
- A.
Mucus and cilia in the respiratory system
- B.
Hydrochloric acid in the stomach
- C.
Lysozyme (an enzyme) in tears
- D.
All three of the above
- 6.
Which of the following is not one of the ways that white blood cells provide active immunity?
- A.
They destroy invading pathogens by eating them
- B.
They produce antibodies to destroy pathogens
- C.
They produce antitoxins that neutralise toxins from pathogens
- D.
They destroy pathogens by ingesting them
- 7.
The lymphocytes produce antibodies. How do antibodies work?
- A.
They penetrate inside the pathogen and destroy its nucleus
- B.
They penetrate inside the pathogen and change the chemical composition of the cytoplasm
- C.
They attach to the pathogens and cause them to clump together making it easy for phagocytes to find and ingest them
- D.
They attach to the pathogens and take them to the liver where they are destroyed
- 8.
Vaccination is used to immunise people against diseases. Pick the false statement:
- A.
Edward Jenner is credited with the discovery of vaccination
- B.
Vaccines contain the antibodies needed to protect your body from infection
- C.
Each vaccine protects you from a specific disease
- D.
Some vaccines contain the pathogen that causes the disease
- 9.
Which of the following are the two main groups of white blood cells?
- A.
Phagocytes and lymphocytes
- B.
Stem cells and platelets
- C.
Macrophages and bacteriophages
- D.
Erythrocytes and monocytes
- 10.
Why are antibiotics no good for treating colds and 'flu?
- A.
Colds and 'flu are viral infections
- B.
Cold and 'flu mutate too quickly so the antibiotics only work for a very short time
- C.
Colds and 'flu are 'superbugs' and totally resistant to antibiotics
- D.
Antibiotics cannot work fast enough to treat colds and 'flu
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