General Microbiology Ch. 1, 3, 4, 5

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Disease causing microorganisms are called

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Pathogens

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Which scientist discovered heat resistant bacterial spores

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Ferdinand Cohn

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57 Terms

1
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Disease causing microorganisms are called

Pathogens

2
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Which scientist discovered heat resistant bacterial spores

Ferdinand Cohn

3
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The six “I’s” of studying microorganisms include all of the following except

infection

4
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All of the following are examples of different types of microbiological media except

Petri dish

5
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Which of the following is essential for development of discrete, isolated colonies

Solid medium

6
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The term that refers to the purposeful addition of microorganisms into a laboratory nutrient medium is

Inoculation

7
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A pure culture contains only

One species of microorganisms

8
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Which of the following magnifies the specimen to produce the real image of the specimen

Objective lens

9
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The type of microscope that you will use in this course is

Bright-field

10
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What is the total magnification of a specimen being viewed under the microscope using a 10x ocular lens and a 40x objective lens

400x

11
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Which type of medium is able to distinguish different species or types of microorganisms based on an observable change in the colonies or in the medium

Differential

12
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The microorganisms that do not have a nucleus in their cells are called

prokaryotes

13
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The Gram stain, acid-fast stain, and endospore stain

are differential stains.

14
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A selective medium contains one or more substances that inhibit growth of certain microbes in order to facilitate the growth of other microbes.

true

15
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Fixed smears of specimens are required in order to perform the Gram stain and endospore stain on the specimens.

true

16
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Pasteur used swan-neck flasks in his experiments to prove that

dust in air was a source of living microorganisms.

17
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Spontaneous generation is the idea that

living things arise from nonliving matter.

18
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Select the correct order of taxa from most inclusive to least inclusive.

Phylum, class, order, family, genus

19
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Helminths are

parasitic worms.

20
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Organisms called parasites are

always harmful to their host.

21
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When assigning a scientific name to an organism,

both genus and species names are italicized or underlined.

22
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All of the following are correct about prokaryotes, except

they have organelles.

23
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Protists include

algae and protozoa.

24
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The size of a typical eukaryotic cell ribosome found in the cytoplasm is

80S.

25
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The eukaryotic organelle that most resembles a bacterial cell is the

mitochondria.

26
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Cilia are found in certain

protozoa.

27
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Chitin is a chemical component of the cell walls of

fungi.

28
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Cell walls are not found on typical cells of

protozoa.

29
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The site for ribosomal RNA synthesis in eukaryotes is the

nucleolus.

30
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The eukaryotic cell's glycocalyx is

composed of mostly polysaccharide.

31
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The endosymbiotic theory says that precursor eukaryotic cells acquired mitochondria by endosymbiosis with a/an_______ ancestor, and others gained photosynthetic ability from endosymbiosis with a/an_______ ancestor.

rickettsia; cyanobacteria

32
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Organelles found in algae but not found in protozoa or fungi are the

chloroplasts.

33
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Which organelle is involved in the locomotion, feeding, and protection in protozoa?

Ectoplasm

34
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What is the main characteristic of protozoa that differentiates them from other microorganism?

Lack of a cell wall

35
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What is microbiology?

Its a study of microorganisms which are too small to see without a microscope that includes bacteria, viruses, fungi, protozoa, algae, and helminths.

36
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What does it mean when they said microbes are ubiquitous?

It means that microbes are found everywhere in the environment. They help recycle nutrients and produce energy, keeping air, soil, and water balanced and healthy.

37
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What is bacteriology?

the study of bacteria, they’re tiny and single-celled organisms w/o nucleus. They reproduce quickly and adapt easily.

38
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What is Mycology?

The study of fungi, including tiny one like mold and yeasts and larger ones like mushrooms. Fungi breaks down matter and reproduce using spores.

39
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What is the primary mode of nutrition for fungi?

Heterotrophic

40
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What is Protozoology?

the study of protozoa which are mostly single celled organism w/ special parts for moving and eating. They can be tiny or visible in water.

41
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What is the organelle involved in locomotion, feeding, and protection in protozoa?

Ectoplasm

42
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What is Virology?

the study of viruses, tiny particles needing host cells to reproduce. Viruses have genetic material in a protein coat and can’t live independently.

43
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What is Parasitology?

studies organisms like protozoa and helminths that depends on hosts for survival. Some are harmless, while others, like Plasmodium can cause diseases

44
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What is Phycology?

study of algae. algae are plants that use sunlight for energy. They range from tiny cells to big seaweeds and help produce oxygen

45
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What is the primary focus of the field of parasitology?

The study of eukaryotic parasites

46
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What is Morphology?

studying the shapes and structures of tiny living things, helping us understand what they do and how they are classified

47
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What tern describes the investigation of organismal metabolism at the cellular and molecular levels?

Physiology

48
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What branch of microbiology focuses on the classification, naming, and identification of microorganisms?

Taxonomy

49
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Which type of cells have membrane-bound organelles?

Eukaryotic

50
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Which structure controls what enters and exits a cell?

Cell membrane

51
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What is the correct format for a scientific name?

Genus species

52
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Which of the following is photosynthetic?

Algae

53
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What does the term “pathogen” refer to?

A microbe that causes disease

54
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Who disproved spontaneous generation using broth experiments?

Louis Pasteur

55
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What is the study of microscopic organisms called?

Microbiology

56
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A scientific theory has little or no evidence to support it and could be best described as a “best guess”

False

57
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Organism in the same Family must also be in the same Class

true