Microbiology Chapter 1: A Brief History
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Microbiology Chapter 1: A Brief History

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Questions and Answers

Who is credited with beginning the use of simple microscopes to examine microorganisms?

Antoni van Leeuwenhoek

What did Antoni van Leeuwenhoek visualize using his simple microscopes?

Tiny animals, fungi, algae, and single-celled protozoa

At the end of the 19th century, what were the microorganisms visualized by Antoni van Leeuwenhoek called?

Animalcules

Who developed a taxonomic system for naming plants and animals, and grouping similar organisms together?

<p>Carolus Linnaeus</p> Signup and view all the answers

What is the structure of nucleic acids shown in Figure 1.1?

<p>DNA double helix</p> Signup and view all the answers

How many categories did Carolus Linnaeus group Leeuwenhoek's microorganisms into?

<p>Six</p> Signup and view all the answers

What distinguishes bacteria and archaea from eukaryotes?

<p>They are unicellular and lack nuclei</p> Signup and view all the answers

What distinguishes protozoa from other microorganisms?

<p>Capable of locomotion by pseudopods, cilia, and flagella</p> Signup and view all the answers

What is a characteristic of algae?

<p>Photosynthetic</p> Signup and view all the answers

Which of the following is a characteristic of fungal yeasts?

<p>Unicellular; reproduce asexually by budding</p> Signup and view all the answers

Which statement is true about parasites?

<p>They live in animal hosts</p> Signup and view all the answers

What is a distinguishing characteristic of viruses?

<p>Not considered living organisms</p> Signup and view all the answers

What did scientists of the Golden Age of Microbiology search for answers to?

<p>All of the above</p> Signup and view all the answers

Antoni van Leeuwenhoek began making and using simple ______

<p>microscopes</p> Signup and view all the answers

Carolus Linnaeus developed a taxonomic system for naming plants and animals and grouping similar organisms together, and Leeuwenhoek's microorganisms were grouped into six ______

<p>categories</p> Signup and view all the answers

By the end of the 19th century, the microorganisms visualized by Antoni van Leeuwenhoek were called ______

<p>microorganisms</p> Signup and view all the answers

Leeuwenhoek's microscopes often made a new microscope for each ______

<p>specimen</p> Signup and view all the answers

Leeuwenhoek examined water and visualized tiny animals, fungi, algae, and single-celled ______; "animalcules"

<p>protozoa</p> Signup and view all the answers

The structure of ______ acids

<p>nucleic</p> Signup and view all the answers

Bacteria and Archaea are ______ and lack nuclei

<p>unicellular</p> Signup and view all the answers

Archaeal cell walls composed of polymers other than ______

<p>peptidoglycan</p> Signup and view all the answers

Bacterial cell walls contain ______; some lack cell walls

<p>peptidoglycan</p> Signup and view all the answers

Much smaller than ______

<p>eukaryotes</p> Signup and view all the answers

Fungi are ______ (have membrane-bound nucleus)

<p>eukaryotic</p> Signup and view all the answers

Molds – ______; grow as long filaments; reproduce by sexual and asexual spores

<p>multicellular</p> Signup and view all the answers

Yeasts – ______; reproduce asexually by budding; some produce sexual spores

<p>unicellular</p> Signup and view all the answers

Protozoa are single-celled ______

<p>eukaryotes</p> Signup and view all the answers

Most are capable of locomotion by ______ – cell extensions that flow in direction of travel

<p>pseudopods</p> Signup and view all the answers

Algae are unicellular or ______

<p>multicellular</p> Signup and view all the answers

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