chapter 2 Flashcards
(9 cards)
why are microorganisms able to survive in almost all kinds of conditions?
they have a cyst which covers them during unfavourable conditions
protozoa have ______ characteristics
animal-like
why are viruses considered non living?
they do not grow on their own and do not respond to changes
how are microorganisms both our friend and foe?
they give us uses like making curd and help us in making vaccines but also cause diseases and spoil food.
what are antibiotics?
antibiotics are the medicines that destroy the growth of disease causing microorganisms
why should antibiotics not be taken when you are suffering from covid-19?
antibiotics are only effective against fungi and bacteria,they do not work against viruses.
who discovered vaccines? how do they work
edward jenner,they work by injecting dead microorganisms in the body,and when the body produces antibodies it becomes immune to the disease
why shouldn’t we shake hands with someone who is suffering from chicken pox?
it is spread through air and direct contact
list one method of preservation
boiling,pasteurisation,vaccum drying,refridgerating,drying,canning,natural/chemical preservatives
