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Domain CORRECT ANSWER The highest level in biological classification. There are three domains Eukaryote CORRECT ANSWER organism composed of one or more eukaryotic cells Eukaryotic cells CORRECT ANSWER cell type characterized by a membrane-bound nucleus Prion CORRECT ANSWER an acellular infectious agent consisting only of protein Prokaryote CORRECT ANSWER single-celled organism consisting of a prokaryotic cell prokaryotic cell CORRECT ANSWER Cell type characterized by the lack of a...

Describe the world-changing scientific contributions of Leeuwenhoek. CORRECT ANSWER A Dutch tailor, merchant, and lens grinder, and the man who discovered the bacterial world. He made his own magnifying lenses - simple microscopes - and observed many things in close detail. He discovered the microbial world and bacteria. Define microbes in the words of Leeuwenhoek and as we know them today. CORRECT ANSWER Leeuwenhoek named the bacteria he saw under the microscope microorganisms and today we c...

Hershey and Chase performed an experiment in order to determine how bacteriophages infect bacteria. What did they find? CORRECT ANSWER The bacteriophage injects DNA into the host cell. This was found because, after centrifugation, the pellet was radioactive The largest difference between a Gram + and Gram - bacterial cell is: CORRECT ANSWER The gram + cell has a much thicker peptidoglycan layer Why does a Gram + cell stain blue/purple in a gram stain? CORRECT ANSWER The Gram + cell stains ...

Microbial growth is an increase in (cell number/size)? CORRECT ANSWER CELL NUMBER Discrete colony CORRECT ANSWER Aggregation of cells arising from a single parent cell Visible on surface of solid media Solid media - all same DNA, replicas of e/o Dispersed cells CORRECT ANSWER Single cells suspended in liquid media Don't cluster together, they are free to spread out The more cloudy- the more cells Complex biofilm CORRECT ANSWER Collection of microbes living (adhered) on a su...