Biology: Vaccines

 Hello everyone, 

In biology, we have been studying how vaccines work, this is, of course, a hot topic at the moment and one students were keen to discuss it. Check out the video, presentation and worksheet I produced for the class below.









Write down the key words in English and Spanish


English 

Spanish 


























Watch the video and answer the questions 

What do pathogens do when they enter our bodies? 

How many cells do bacteria have?

What are viruses smaller than? 

What are viruses responsible for causing? 

What are the three main functions of the immune system?
 
What happens if your body encounters the same pathogen again?


Gap fill exercise 

antibodies               antigens           booster        immune system      disease 

Vaccines contain dead or very weak pathogens. These pathogens do not cause ____________, but they still have ______________ on their surface. When they enter the body, the ____________ produces antibodies to fit the antigens. 
Later, if live pathogens of the same type enter the body, the immune system is ready to rapidly produce _______________. Vaccines therefore give you immunity without you actually having the disease. 
Over time, the effect of the vaccine reduces, so an additional vaccine may be required. This is called a ________________ vaccine. 

Alice




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