Microbio Exam 1

Microbio Exam 1 - Term Definition Leeuwenhoek Invented 1st...

Info icon This preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Term: Leeuwenhoek Definition: Invented 1st microscopes. First to see microbes ("beasties"). Fungi, algae, protozoa, bacteria (later) Term: Linnaeus Definition: Developed taxonomic system for naming plants and animals (grouping similar organisms together). Animal & Plant Kingdoms: fungi, protozoa, algae, bacteria, archaea, & small multicellular animals (viruses too small) Term: Fungi Definition: Eukaryotic. Obtain food from other organisms (unlike plants) & have cell walls (unlike animals). Some molds and yeasts. Term: Molds Definition: Multicellular and grow as long filaments. Reproduce by sexual and asexual spores
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Term: Yeasts Definition: Unicellular and usually oval or round. Reproduce asexually by budding. Some produce sexual spores Term: Protozoa Definition: Single-celled eukaryotes. Most are locomotive via flagella, cilia, or pseudopodia. Typically live in water (some in animal hosts where they may cause dz). Most asexual, some sexual. Term: Algae Definition: Unicellular or multicellular photosynthetic organisms. Include seaweeds and kelps. Unicellular algae common in freshwater ponds, streams, lakes, and oceans. Provide most of the world's O2 Term: Bacteria Definition: Prokaryotic. Cell walls composed of peptidoglycan (some lack cell walls). Asexual. Most do not cause dz.
Image of page 2
Term: Archaea Definition: Prokaryotic. Archaea cell walls composed of different polymers than peptidoglycan. Asexual. Found in extreme environments (hot springs, Dead Sea, etc.) No known archaea cause dz. Term: Parasitic worms Definition: Adults not microscopic, but early stages (eggs, larva) can be Term: Viruses Definition: invisible to Leeuwenhoek (too small). Discovered in 1932 (invention of electron microscope). Acellular obligatory parasites composed of small amounts of genetic material (DNA or RNA) surrounded by a protein coat. Term: Abiogenesis Definition: Spontaneous generation. Promulgated by Aristotle
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Term: Francesco Redi Definition: aimed to disprove spont gen with maggot/meat experiment. most scientists believed until Leeuwenhoek's microbes Term: John T. Needham Definition: experiments with beef broth/plant infusions-->cloudy. Convinced scientists of spont gen of microbes Term: Lazarro Spallanzini Definition: Boiled infusions for an hour and sealed vials by melting glass-->clear. Critics claimed air needed for microbes to thrive or heating destroyed "life force." Term: Louis Pasteur Definition: Swan-necked flasks stayed clear for 18 months-->disproved spont gen. Broke necks-->cloudy; tipped over to touch dust-->cloudy. Instigated Scientific Method
Image of page 4
Term: Scientific Method Definition: 1. Group of observations leads to a question; 2. Generation hypothesis; 3. Design and conduct experiment to test hypothesis; 4. Based on results, accept, reject, or modify hypothesis Term: Fermentation Definition: Pasteur: observed budding-->proved yeast arises from yeast. Sealed flasks of grape juice + yeast-->proved yeast reproduces w/o air. Bacteria + juice = acid. Yeast + juice = alcohol Term: Pasteurization Definition: heat enough to kill most bacteria w/o changing basic qualities Term: Eduard Buchner Definition: Experiments demonstrated presence of enzymes. Began the field of biochemistry and study of metabolism
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern