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A. Smallpox; Chicken pox; Measles;
A. Non-cellular; One nucleic acid;
Polio; ‘Flu; Common cold; Leaf
Obligate parasite; No metabolism;
mosaic; AIDS or HIV; Mumps;
Do not possess organelles
Rubella; Rabies
Q. What is meant by the term
Q. Give a role of memory T-cells.
immunity?
A. The ability of the body to resist
infection
A. Recognise and destroy infected
or damaged cells; Memory
activation; Suppress immune
Q. How does the skin help to defend
system
the body against pathogenic micro‑ Q. Give an example of a beneficial
application of a virus.
organisms?
A. Contains the enzyme lysozyme –
A. Bacteriophage; Used in genetic
a bactericidal agent; Continuous
engineering; Vaccine production;
unbroken covering
Vector in disease treatment
Q. What is the purpose of
vaccination?
Q. Give a role of helper T-cells.
A. To induce immunity
Q. True or False. Immunity that
results from vaccination is
effectively the same as the
immunity that develops following
an infection.
A. Stimulate B cells; Stimulate killer
T cells; Recognise antigens
A. TRUE
A. HIV
Q. What is meant by the term active
immunity?
Q. What is meant by the term
passive immunity?
Q. Name a virus whose activity
poses a major threat to human
health.
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A. Long-term immunity resulting
from the production of antibodies
A. Recipient receives antiserum,
containing antibodies, from an
already immunised individual
Q. What is meant by the term
antigen?
Q. What is meant by the term
antibody?
A. Substance on cell membrane;
Surface of virus or bacteria;
A. Substance produced in response
Foreign substance that causes
to presence of antigen
antibody production
Q. What is the role of antibodies in
Q. Give a role of Killer T-cells.
the body?
A. To inactivate antigens
A. Destroy infected or damaged
cells
Q. What is meant by the term
vaccination?
Q. Give a role of suppressor T-cells.
A. ‘Safe dose’ of a pathogen,
causing antibody production or an
immune response
Q. To which group of blood cells do
lymphocytes belong?
A. Switch off immune system
Q. How is HIV transmitted?
A. White blood cells
A. Sexual contact
Q. Give a role of T-cells.
Q. Give a role of B-cells.
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A. Act in one of four processes as
helper T-cells, killer T-cells,
suppressor T-cells or memory Tcells
Q. Name the two main chemical
components of a virus.
A. Produce antibodies
Q. Give one example of the use of
hormone supplements.
A. DNA or RNA; Protein
A. Treatment of diabetes;
Contraception
Q. Comment on the difficulty of
describing a virus as a living
organism.
Q. Name two diseases of humans
caused by viruses.
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Follow-me Quiz
Follow-me Quiz
3.5.3 + 7 Defence System
3.5.4 Viruses
3.5.3 + 7 Defence System
3.5.4 Viruses
Follow-me Quiz
Follow-me Quiz
3.5.3 + 7 Defence System
3.5.4 Viruses
3.5.3 + 7 Defence System
3.5.4 Viruses
Follow-me Quiz
Follow-me Quiz
3.5.3 + 7 Defence System
3.5.4 Viruses
3.5.3 + 7 Defence System
3.5.4 Viruses
Follow-me Quiz
Follow-me Quiz
3.5.3 + 7 Defence System
3.5.4 Viruses
3.5.3 + 7 Defence System
3.5.4 Viruses
Follow-me Quiz
Follow-me Quiz
3.5.3 + 7 Defence System
3.5.4 Viruses
3.5.3 + 7 Defence System
3.5.4 Viruses
Enter Topic Title in each section above
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