Flashcards
Biology 4.1.1 Vaccines and immunity
Cards in this deck (12)
- 1What is a vaccination?A deliberate exposure to an antigen to produce an immune response
- 2What can be in a vaccine?-Weakened form of a microbe
-Antigens of a pathogen - 3What is herd immunity?When enough people are vaccinated to provide immunioty for the whole population as eventhough not everyone is vaccinated, there is no one to give it to those that havnt been vaccinated
- 4What is ring immunity?When a new case of a disease is reported, all the perople around the infected person are vaccinated, preventing it from spreading
- 5What is active immunity?When a person makes their own antibodies to fight a disease
- 6What is passive immunity?When a patient is given someone elses' antibodies
- 7What is natural immunity?It is a pre-existing and natural defense mechanism inherited from parents to offspring
- 8What is artificial immunity?Making someone immune to a disease through treatment rather than just waiting for them to catch the disease
- 9Why does the flu/influenza vaccine need to be refreshed every year?The virus keeps mutating so that the antigens change shape so the T memory cells produced will no longer be complimentary to the antigen, so antobodies can't be made as the cell won't get activated
- 10Give two reasons why new drugs are needed-Not all diseases have cures yet
-Some antibiotics are becoming ineffective - 11Give two possible ways that new medicineas can be discovered with an example-Accidental discovery eg Flemming eith penicilin
-Plant research eg fox glove can treat abnormal heartbeat rhythms - 12Explain what antibiotics do and suggest a reason why they are becoming ineffectiveAntibiotics prevent the growth of bacteria but overuse can result in resistant bacteria developing
Information
- Description
- User has deleted their subject information Flashcards on Biology 4.1.1 Vaccines and immunity, created by Deleted user on 07/06/2019.
- Created by
- Deleted user
- Views
- 15
- History
-
- Created by Sam Gunnell · Jun 5, 2019
- Copied by Sam Gunnell · Jun 7, 2019
- Rating