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MICROBIOLOGY > 1.1-1.2 Microbial World and You > Flashcards

1.1-1.2 Microbial World and You Flashcards

1
Q

A new microorganism has been isolated from hot springs in Yellowstone Nation Park. It consists of single cells, which appear to lack a nucleus. Chemical analysis shows the presence of DNA and RNA in the cytoplasm and peptidoglycan in the cell wall. In which of the following groups will this organism be classified?

A

Bacteria

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2
Q

The study of Protozoa

A

Parasitology

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3
Q

Which of the following types of microorganisms and its description are not correctly matched?

Bacteria-prokaryotic
Protozoa-small animals
Fungi-eukaryotic
Helminths- multicellular animals

A

Protozoa- small animals

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4
Q

Microbes are not responsible for

A

Antibody production

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5
Q

Which of the following processes are beneficial activities of microorganisms?
Recycling elements in the environment
Decomposing sewage
Producing foods and chemicals
All of the listed responses are correct

A

All of the listed responses are correct

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6
Q

Biofilms are commonly found in which of the following environments?
All of the listed responses are correct
A rock in a lake
Teeth
Water pipes
Medical devices

A

All of the following responses are correct

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7
Q

Which of the following properties are true of both bacteria and archaea?
Both are characterized as prokaryotes
Both have cell walls composed of peptidoglycan
Both contain either DNA or RNA
Both bacteria and archaea contain methanogerns, extreme halophiles, and extreme thermophiles

A

Both are characterized as prokaryotes

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8
Q

Which of the following best describes gene therapy?
Use of harmless virus to insert gene in a host cell
Use of microbes for bioremediation
Use of microbes to control pests
Use of microbes to recycle nitrogen from the air into the soil

A

Use of harmless virus to insert gene in a host cell

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9
Q

All of the following describe a major feature used to classify organisms into three domains ( Bacteria, Archaea, Eukarya)
Presence or absence of DNA
Presence or absence of peptidoglycan
Nutritional and metabolic factors
Presence or absence of a nucleus

A

Presence or absence of DNA

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10
Q

Which of the following is true of scientific names assigned to living organisms

A

The scientific name is always underlined or italicized

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11
Q

Algae are

A

Photosynthetic and classified as eukaryotes

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12
Q

In the scientific name Escherichia coli, escherichia is the

A

Genus name

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13
Q

Which of the following properties are true of both bacteria and viruses?
Both use a molecule of nuclei acid to determine heredity
Both contain DNA and RNA
Both are surrounded by a protein coat
Both can replicate using biogenesis
Both have cell walls composed of peptidoglycan

A

Both use a molecule of nuclei acid to determine heredity

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14
Q

Which of the following is characteristic of bacteria
Bacteria lack a membrane bound nucleus
Bacteria reproduce by cell division called mitosis
Bacteria have cellulose or chitin in their cell walls
Bacteria have DNA or RNA but not both
Bacteria live in extreme environments including pH, temperature and pressure extremes

A

Bacteria lack a membrane bound nucleus

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15
Q

All of the following are eukaryotes except

Fungi
Algae
Bacteria
Protozoa
Helminths

A

Bacteria

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16
Q

Which of the following is a scientific name

A

Legionella pneumophila

17
Q

Which of the following is not a characteristic of archaea
Their cell walls contain peptidoglycan
They are not known to cause disease
They are often found in extreme environments
Some lack cell walls

A

Their cell walls contain peptidoglycan

18
Q

Only a small percentage of microbes

A

Cause disease

19
Q

All living organisms can be classified into three domains

Bacteria, archaea, eukarya
Animalia, plantae, and microbes
Eukaryotes, prokaryotes, and viruses
Carnivores, herbivores and omnivores
Bacteria, fungi, Protozoa

A

Bacteria, archaea, eukarya

20
Q

not composed of cells

A

viruses

21
Q

cell wall made of chitin

A

fungi

22
Q

cell wall made of peptidoglycan

A

bacteria

23
Q

cell wall made of cellulose; photosynthetic

A

algae

24
Q

unicellular, complex cell structure lacking a cell wall

A

protozoa

25
Q

multicellular animals

A

helminths

26
Q

prokaryote without peptidoglycan cell wall

A

archaea

MICROBIOLOGY (6 decks)

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