Quiz 1 Flashcards
____ is the study of microorganisms/microbes.
Microbiology
____ are living organisms that are usually too small to be seen with the naked eye.
Microorganisms/Microbes
6 main classes of microorganisms.
Viruses Bacteria Archaea Fungi Protozoa Algae
____ are acellular, have no nucleus, no organelles, no cytoplasm, and are so small an electron microscope is needed to see them.
Viruses
____ are not considered to be living when they are not living within a host cell.
Viruses
Viruses are oblate intracellular parasites which means?
Obligate Intracellular Parasites can only multiply or or replicate inside of a living host cell.
____ are prokaryotes that do have DNA, they have a complex cell wall that contains peptidoglycan, and they can live where humans can’t.
Bacteria
What is the difference between eubacteria & archaebacteria?
Eubacteria: Live everywhere, contain petidoglycan in cell wall
Archaebacteria: Live in extreme conditions, cell wall is chemically simple.
____ is a polymer made of sugars and amino acids that form the (mesh like) cell wall of bacteria.
Peptidoglycan
____ are microorganisms that are eukaryotic, can be unicellular&mulicellular, are photosynthetic, live in fresh or salt water, and contain cellulose in the cell walls. Usually Green in color.
Algae
____ are microorganisms that are eukaryotic, are unicellular, they move (are motile), shaped differently, and have a free or parasitic lifestyle.
Protozoa
___ are eukaryotes, can be uni & multicellular, contains chitin in the cell walls, absorb organic materials for nutrition, have no digestion system, and are responsible for breaking down waste by absorption.
Fungi
____ is a microbe that causes a disease.
Pathogen
____ are organisms that reside in or on the body without causing disease.
Normal Microbiota (Microflora)
The effect of ____ occurs when normal microflora attempt to reduce necessary nutrients that are needed in order for pathogens to grow.
Microbial Antagonism
