What is the function of pili in bacteria?

They assist bacteria in sticking to surfaces and transfer of DNA

Who established the system of scientific nomenclature and what does it involve?

Carolus Linnaeus; two-part names consisting of genus and specific epithet.

What is Robert Koch known for in the field of microbiology?

Proved a specific bacterium causes anthrax and developing Koch's Postulates

How are scientific names abbreviated?

Genus to first letter, species full

How do viruses reproduce?

By using the cellular machinery of another living organism.

How do protozoa typically move?

Move by pseudopods, cilia, or flagella

Which of the following lists correctly identifies the five kingdoms of life?

Monera, Protista, Fungi, Plantae, Animalia

What is pasteurization?

The application of high heat for a short time to kill bacteria

In the scientific method, what is the purpose of conducting an experiment?

To gather data to support or refute the hypothesis

Eukaryotic, cellulose wall, in water/soil

What is the primary difference between eukaryotic and prokaryotic cells?

Eukaryotic cells contain a nucleus, while prokaryotic cells do not.

What did Alexander Fleming observe that led to the discovery of the first antibiotic?

A mold (Penicillium) producing a substance that killed S. aureus bacteria

What did Louis Pasteur develop to kill unwanted bacteria in wine?

Heating the wine for 30 minutes in the absence of oxygen

What are the key characteristics of Archaea?

Prokaryote, no peptidoglycan wall, extreme environments

What distinguishes unicellular from multicellular fungi?

Unicellular: yeasts; Multicellular: molds

Match archaea groups with their environments:

Methanogens - methane; Halophiles - salt; Thermophiles - heat

What did Louis Pasteur demonstrate regarding microbes?

That microbes can be blocked from environments using aseptic techniques.

What is an aseptic technique?

Techniques that prevent contamination by unwanted microorganisms.

How are scientific names properly written?

Genus- capitalized, specific epithet-lowercase, both italicized/underlined.

What best describes viruses?

Non-cellular, active inside host

What do scientific names often describe?

The organism itself or the scientist who discovered it

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Chapter 1- Microbiology

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Questions 36

Answers

1
What is the function of pili in bacteria?
They assist bacteria in sticking to surfaces and transfer of DNA
They aid in the movement of bacteria.
They protect bacteria from antibiotics.
They help bacteria in photosynthesis.
2
What is the main component of most bacteria cell walls?
Keratin
Chitin
Peptidoglycan
Cellulose
3
Who established the system of scientific nomenclature and what does it involve?
Charles Darwin; classification based on evolution.
Gregor Mendel; naming based on genetic traits.
Carolus Linnaeus; two-part names consisting of genus and specific epithet.
Louis Pasteur; naming based on microbial characteristics.
4
What is Robert Koch known for in the field of microbiology?
Proved a specific bacterium causes anthrax and developing Koch's Postulates
Introducing antiseptic techniques in hospitals
Discovering the structure of DNA
Creating the first vaccine
5
What step immediately follows the formulation of a question in the scientific method?
Making further observations
Analyzing results
Conducting an experiment
Formulating a hypothesis
6
What is the main feature found in eukaryotic cells that is absent in prokaryotic cells?
Mitochondria
Cell wall
Nucleus
Ribosomes
7
From which language are scientific names usually derived?
Latin
French
Greek
Italian
8
How are scientific names abbreviated?
Species to first letter, genus full
No abbreviations
Both genus and species to first letters
Genus to first letter, species full
9
How do viruses reproduce?
Using their own cellular machinery.
Through binary fission.
By budding from host cells without using their machinery.
By using the cellular machinery of another living organism.
10
How do protozoa typically move?
Immobile
Move by pseudopods, cilia, or flagella
11
What forms can a bacterial cell wall take?
Slime layer or capsule
Flagella or cilia
Nucleus or cytoplasm
Ribosomes or mitochondria
12
Which scientific abbreviation is done correctly?
S. aureus
S. aureus
S. Aureus
S. Aureus
13
Which of the following lists correctly identifies the five kingdoms of life?
Virus, Fungi, Plants, Invertebrates, Vertebrates
Monera, Protista, Fungi, Plantae, Animalia
Bacteria, Algae, Fungi, Plants, Animals
Prokaryotae, Eukaryotae, Plantae, Fungi, Animalia
14
What is pasteurization?
The process of fermenting beverages under controlled conditions
The process of aging wine to enhance its flavor
The application of high heat for a short time to kill bacteria
The technique of cooling liquids to prevent bacterial growth
15
In the scientific method, what is the purpose of conducting an experiment?
To make an initial observation
To gather data to support or refute the hypothesis
To formulate a new question
To prove the hypothesis is correct
16
When was penicillin first tested clinically and mass-produced?
1890's
1900's
1920's
1940's
17
What is the main characteristic of the cell walls of fungi?
Made of peptidoglycan
Made of chitin
Composed of lipids
Composed of cellulose
18
What defines algae?
Prokaryotic, cellulose wall, with animals
Prokaryotic, peptidoglycan, extreme environments
Eukaryotic, cellulose wall, in water/soil
Eukaryotic, chitin wall, terrestrial
19
What is the primary difference between eukaryotic and prokaryotic cells?
Eukaryotic cells contain a nucleus, while prokaryotic cells do not.
Prokaryotic cells contain a nucleus, while eukaryotic cells do not.
Prokaryotic cells are larger than eukaryotic cells.
Eukaryotic cells have a cell wall, while prokaryotic cells do not.
20
What did Alexander Fleming observe that led to the discovery of the first antibiotic?
A chemical reaction in a petri dish that neutralized bacteria
A bacterium that was immune to all known diseases
An animal extract that inhibited bacterial growth
A mold (Penicillium) producing a substance that killed S. aureus bacteria
21
What is the role of flagella and cilia on bacteria?
It protects bacteria from harmful substances.
It helps in the reproduction of bacteria.
It aids in bacterial movement.
It assists in the digestion of nutrients.
22
What did Louis Pasteur develop to kill unwanted bacteria in wine?
Freezing the wine to extremely low temperatures
Adding chemical preservatives to the win
Heating the wine for 30 minutes in the absence of oxygen
Filtering the wine through a fine mesh
23
What did Joseph Lister introduce in surgical practices to prevent infections?
Antibiotics
Alcohol-based sterilization
Carbolic acid (phenol)
Ultraviolet light sterilization
24
What are the key characteristics of Archaea?
Prokaryote, no peptidoglycan wall, extreme environments
Eukaryote, no peptidoglycan wall, cannot survive extremes
Eukaryote, peptidoglycan wall, moderate environments
Prokaryote, peptidoglycan wall, extreme environments
25
How are the cell walls of Archaea slightly different from those of bacteria?
do not contain peptidoglycan
contain cellulose
primarily made of chitin
contain mostly keratin
26
I am an organism with a cell wall made of chitin and I am multicellular, what am I?
Plant
Fungi
Bacteria
Animal
27
What distinguishes unicellular from multicellular fungi?
Unicellular: yeasts; Multicellular: molds
Unicellular: molds; Multicellular: yeasts
Both types: yeasts
Both types: molds
28
Match archaea groups with their environments:
Methanogens - methane; Halophiles - heat; Thermophiles - salt
Methanogens - salt; Halophiles - methane; Thermophiles - cold
Methanogens - methane; Halophiles - salt; Thermophiles - heat
Methanogens - acid; Halophiles - methane; Thermophiles - salt
29
What did Louis Pasteur demonstrate regarding microbes?
That microbes can be created spontaneously.
That all microbes are harmful to humans.
That microbes can be blocked from environments using aseptic techniques.
That microbes cannot survive in high temperatures.
30
How do bacteria most generally reproduce?
Through binary fission
Via spore formation
By sexual reproduction
By budding
31
What is an aseptic technique?
Techniques that prevent contamination by unwanted microorganisms.
Techniques that promote the growth of microbes.
A method to identify different types of microorganisms.
A process to create microbes in laboratory conditions.
32
How are scientific names properly written?
Genus- capitalized, specific epithet-lowercase, both italicized/underlined.
Both genus and specific epithet are capitalized and italicized.
Genus is lowercase, specific epithet is capitalized, both are italicized.
Both genus and specific epithet are lowercase and bolded.
33
What is the first step in the scientific method?
Conducting an experiment
Formulating a hypothesis
Making an observation
Analyzing results
34
What best describes viruses?
Cellular, replicate independently
Non-cellular, replicate independently
Cellular, active outside host
Non-cellular, active inside host
35
Who discovered the first antibiotic and in what year?
Alexander Fleming in 1928
Edward Jenner in 1796
Robert Koch in 1905
Louis Pasteur in 1885
36
What do scientific names often describe?
The geographical region where the organism was found
The habitat of the organism
The organism itself or the scientist who discovered it
The medicinal uses of the organism

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