B2 Revision
Resisting infection questions
![](icon_question.gif)
Which of these are barriers to infection?
Bloodstream
| |
Skin
| |
White blood cells
| |
Stomach acid
| |
Tears
| |
![iDevice icon](icon_question.gif)
Read the paragraph below and fill in the missing words.
Microorganisms make us ill
because they
rapidly and produce
. Our bodies have
systems to defend themselves against the
invading
. The immune system uses
on microorganisms to recognise them.
![](icon_question.gif)
The three ways in which
white blood cells defend the body are:
engulfing microorganisms
| |
eating microorganisms
| |
producing antibodies
| |
digesting microorganisms
| |
zapping microorganisms with little ray guns
| |
![](icon_question.gif)
All microorganisms can be
recognised using the same antibodies.
True False
Once the body has made the antibody to recognise a particular microorganism it can make that antibody again very quickly, protecting against that particular microorganism.
True False