Protoctists, Bacteria And Viruses Flashcards
How would you describe a protoctist
Single celled
Microscopic
Some have chloroplasts
Some don’t
Give two examples of protoctist a
Chlorella (plant like)
Amoeba (animal cell like-lives in water)
How would you label a protoctist
With a nucleus
Describe bacteria
Single celled Microscopic No nucleus Circular chromosome of DNA Some can photosynthesise Most feed of other organisms
Give two examples of bacteria
Lactobacillus bulgaricus (used to make milk sour and turn to yoghurt-rod shaped) Pneumococcus (round in shape)
How would you label bacteria?
Cell wall, cytoplasm, circular chromosome, cell membrane, plasmids
Describe viruses
Particles rather than cells Smaller than bacteria Can only reproduce inside living cells (parasite) Infect all types of living organisms Come in different shapes and sizes Don't have a cellular structure
How would you label a virus
With a protein coat and some genetic material (either DNA or RNA)
Give three examples of viruses
Influenza virus
Tobacco mosaic virus (makes the leaves of tobacco plants discoloured by stopping them producing chloroplasts)
HIV
What are pathogens
Organisms that cause disease
Give an example of a protoctist pathogen
Plasmodium - causes malaria
Give an example of a bacterium pathogen
Pneumococcus - causes pneumonia
Give two examples of virus pathogens
Influenza virus (causes flu) and HIV (causes AIDS)
