BIOS242 Final (Chamberlain)Exam Questions And Answers Already Passed.

4 important facts about Antoni van Leeuwenhoek (Dutch) - Answer -First person to see protozoa and bacteria -Began making and using simple microscopes -Often made a new microscope for each specimen -Examined water and visualized tiny animals, fungi, algae, and single-celled protozoa; "animalcules 2 important facts about Carolus Linnaeus - Answer -developed taxonomic system for naming plants and animals and grouping similar organisms together -Leeuwenhoek's microorganisms grouped into six categories as follows: ◦Fungi ◦Protozoa ◦Algae ◦Bacteria ◦Archaea ◦Small multicellular animals Describe 2 important contributions of Pasteur - Answer -Developed germ theory of disease -His experiment: ◦Swan neck flasks were used:: allowed for airflow without allowing the introduction of environmental microbes ◦When the "swan-necked" flasks remained upright, no microbial growth appeared ◦When the flask was tilted, dust from the bend in the neck seeped back into the flask and made the infusion cloudy with microbes within a day What are prokaryotes, and what are the characteristics of them? - Answer -Archaea and bacteria. -Characteristics: no membrane surrounding DNA, no nucleus, no membrane bound organelles, smaller than eukaryotes