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Microbial Biology Concepts Assessment

Total questions: 78

Worksheet time: 39mins

Name
Class
Date
1.

Based on the temperature classification table, which term describes microbes that grow best above 80 degrees Celsius?

a)

Psychrophiles

b)

Mesophiles

c)

Thermophiles

d)

Hyperthermophiles

2.

According to the temperature classification table, most human pathogens are classified as which temperature group?

a)

Psychrophiles

b)

Mesophiles

c)

Thermophiles

d)

Hyperthermophiles

3.

Which temperature range corresponds to thermophiles according to the table?

a)

approximately 0–15 degrees Celsius

b)

approximately 20–45 degrees Celsius

c)

approximately 45–80 degrees Celsius

d)

greater than 80 degrees Celsius

4.

Which example habitats are associated with psychrophiles in the temperature classification table?

a)

Polar oceans and glaciers

b)

Hot springs

c)

Deep-sea vents

d)

Human gastrointestinal tract

5.

On the provided pH scale, which value is neutral?

a)

0

b)

5

c)

7

d)

14

6.

According to the pH notes, how are acidic conditions defined?

a)

pH below 7

b)

pH equal to 7

c)

pH above 7

d)

pH exactly 14

7.

Microbes adapted to pH 5.5 or less are called what?

a)

Acidophiles

b)

Osmophiles

c)

Mesophiles

d)

Thermophiles

8.

Which environments are listed as examples where acidophiles thrive?

a)

Acidic environments such as the stomach and acid mines

b)

High-salt foods like ham and cured meats

c)

Hot springs with elevated temperatures

d)

Deep-sea hydrothermal vents

9.

In high-salt environments, water is pulled out of cells leading to what effect?

a)

Plasmolysis

b)

Endocytosis

c)

Photosynthesis

d)

Mitosis

10.

Osmophiles are described as microbes that can live in which conditions?

a)

High salt or high sugar environments

b)

Extremely low temperatures only

c)

Neutral pH environments only

d)

Oxygen-free environments only

11.

Which microorganism is given as an example that survives salty foods and can cause food poisoning?

a)

Staphylococcus aureus

b)

Escherichia coli

c)

Saccharomyces cerevisiae

d)

Plasmodium falciparum

12.

What is microbiology according to the introduction section?

a)

Study of microorganisms too small to see unaided

b)

Study of plants and their tissues

c)

Study of Earth's oceans and marine life

d)

Study of chemical reactions only

13.

According to the microbes studied table, which groups are prokaryotic? Select all that apply.

a)

Bacteria

b)

Archaea

c)

Fungi

d)

Protists

14.

According to the microbes studied table, what is the cell type of viruses, prions, and viroids?

a)

Prokaryotic

b)

Eukaryotic

c)

Acellular

d)

Multicellular

15.

From the slide section titled Fields of Microbiology, which field focuses on the study of viruses? The listed fields are Medical, Environmental, Food, Industrial, Immunology, Virology, and Microbial genetics.

a)

Medical

b)

Virology

c)

Immunology

d)

Microbial genetics

16.

From the slide section titled Fields of Microbiology, which field is primarily concerned with diagnosing and treating infectious diseases in patients? The listed fields are Medical, Environmental, Food, Industrial, Immunology, Virology, and Microbial genetics.

a)

Medical

b)

Environmental

c)

Food

d)

Industrial

17.

From the slide section titled Fields of Microbiology, which field focuses on hereditary information and gene function in microorganisms? The listed fields are Medical, Environmental, Food, Industrial, Immunology, Virology, and Microbial genetics.

a)

Immunology

b)

Microbial genetics

c)

Environmental

d)

Food

18.

From the slide section titled History of Microbiology – MUST KNOW, who was the first to see microbes? The listed names and contributions are Anton van Leeuwenhoek – first to see microbes; Pasteur – disproved spontaneous generation; Koch – Koch’s postulates, link microbes to disease; Jenner – first vaccine (smallpox); Fleming – penicillin.

a)

Pasteur

b)

Koch

c)

Anton van Leeuwenhoek

d)

Jenner

19.

From the slide section titled History of Microbiology – MUST KNOW, who disproved spontaneous generation? The listed names and contributions are Anton van Leeuwenhoek – first to see microbes; Pasteur – disproved spontaneous generation; Koch – Koch’s postulates, link microbes to disease; Jenner – first vaccine (smallpox); Fleming – penicillin.

a)

Koch

b)

Pasteur

c)

Fleming

d)

Jenner

20.

From the slide section titled History of Microbiology – MUST KNOW, whose work established postulates that linked microbes to disease? The listed names and contributions are Anton van Leeuwenhoek – first to see microbes; Pasteur – disproved spontaneous generation; Koch – Koch’s postulates, link microbes to disease; Jenner – first vaccine (smallpox); Fleming – penicillin.

a)

Koch

b)

Fleming

c)

Jenner

d)

Anton van Leeuwenhoek

21.

From the slide section titled History of Microbiology – MUST KNOW, who developed the first vaccine for smallpox? The listed names and contributions are Anton van Leeuwenhoek – first to see microbes; Pasteur – disproved spontaneous generation; Koch – Koch’s postulates, link microbes to disease; Jenner – first vaccine (smallpox); Fleming – penicillin.

a)

Fleming

b)

Jenner

c)

Pasteur

d)

Koch

22.

From the slide section titled History of Microbiology – MUST KNOW, who is associated with penicillin? The listed names and contributions are Anton van Leeuwenhoek – first to see microbes; Pasteur – disproved spontaneous generation; Koch – Koch’s postulates, link microbes to disease; Jenner – first vaccine (smallpox); Fleming – penicillin.

a)

Anton van Leeuwenhoek

b)

Fleming

c)

Pasteur

d)

Jenner

23.

From the slide section titled Classification Levels, which option shows the correct order from broadest to most specific? The sequence shown is Domain → Kingdom → Phylum → Class → Order → Family → Genus → Species.

a)

Domain → Kingdom → Phylum → Class → Order → Family → Genus → Species

b)

Kingdom → Domain → Phylum → Class → Order → Family → Genus → Species

c)

Domain → Phylum → Kingdom → Class → Order → Family → Genus → Species

d)

Domain → Kingdom → Class → Phylum → Order → Family → Genus → Species

24.

From the slide section titled Classification Levels, which taxonomic level is the most specific in the sequence Domain → Kingdom → Phylum → Class → Order → Family → Genus → Species?

a)

Genus

b)

Species

c)

Family

d)

Order

25.

From the slide section titled Domains, which domain includes organisms with membrane-bound nuclei? The domains listed are Bacteria, Archaea, and Eukarya.

a)

Bacteria

b)

Archaea

c)

Eukarya

d)

None of these

26.

Which prokaryotic structure primarily provides protection and adherence and can act as a virulence factor?

a)

Capsule

b)

Cell wall

c)

Plasma membrane

d)

Ribosomes

27.

Which structure is chiefly responsible for motility and can contribute to virulence in prokaryotes?

a)

Flagella

b)

Pili/fimbriae

c)

Plasmids

d)

Inclusion bodies

28.

Which roles are associated with pili/fimbriae in prokaryotes? Select all that apply.

a)

Attachment

b)

Conjugation

c)

Motility

d)

Protein synthesis

29.

In prokaryotes, which ribosome size is characteristic?

a)

70S

b)

80S

c)

60S

d)

90S

30.

The region containing chromosomal DNA in a prokaryotic cell is called what?

a)

Nucleoid

b)

Nucleus

c)

Plasmid

d)

Inclusion body

31.

Endospores are primarily produced by which organisms?

a)

Some Gram-positive bacteria such as Bacillus and Clostridium

b)

Gram-negative bacteria such as Escherichia coli

c)

Archaea such as Halobacterium

d)

Fungi such as Saccharomyces

32.

Which conditions are endospores resistant to? Select all that apply.

a)

Heat

b)

Chemicals

c)

Radiation

d)

Drying

e)

Autoclaving

33.

Which sequence best describes the sporulation to germination cycle in bacteria?

a)

Vegetative cell forms an endospore, which germinates under good conditions

b)

Endospore transforms directly into a vegetative cell without environmental change

c)

Vegetative cell divides into two vegetative cells; no endospore forms

d)

Endospore forms only after germination occurs

34.

Which method effectively kills endospores using steam?

a)

Autoclaving

b)

Refrigeration

c)

Ultraviolet light at room temperature

d)

Desiccation

35.

Based on the Chapter 8 – Bacterial Genetics notes on Horizontal Gene Transfer, which process is defined as the uptake of naked DNA from the environment?

a)

Transformation

b)

Transduction

c)

Conjugation

d)

Replication

36.

According to the Horizontal Gene Transfer summary in Chapter 8 – Bacterial Genetics, DNA moved during transduction is carried by which agent?

a)

Bacteriophage

b)

Sex pilus

c)

Plasmid vector

d)

Membrane vesicle

37.

From the Chapter 8 – Bacterial Genetics section on Horizontal Gene Transfer, which process involves direct cell-to-cell transfer via a sex pilus?

a)

Conjugation

b)

Transformation

c)

Transduction

d)

Binary fission

38.

In the conjugation notes under Chapter 8 – Bacterial Genetics, which types of genetic material can be transferred during conjugation? Select all that apply.

a)

Plasmid DNA

b)

Chromosomal DNA

c)

Ribosomal RNA

d)

Mitochondrial DNA

39.

According to the "What is transferred?" bullet list under Horizontal Gene Transfer, which traits can be transferred between bacteria? Select all that apply.

a)

Antibiotic resistance

b)

Virulence genes

c)

Gram stain properties

d)

Photosynthesis capability

40.

From the Ames Reverse Gene Mutation Test notes, what does the test evaluate about a chemical?

a)

Whether it is a mutagen (potential carcinogen)

b)

Whether it is an effective antibiotic

c)

Whether it increases bacterial growth rate

d)

Whether it changes Gram-stain reactions

41.

According to the Ames Reverse Gene Mutation Test description, what type of bacteria are used in the assay?

a)

Bacteria with a mutation

b)

Bacteria carrying a capsule

c)

Bacteria with a sex pilus

d)

Bacteria lacking plasmids

42.

According to the worksheet, which listed reasons support using bacteria in research? Select all that apply.

a)

Fast growth

b)

Easy genetics

c)

Ethical

d)

Cheap

e)

Clear mutations

43.

Which features of viruses are explicitly listed in the worksheet? Select all that apply.

a)

Obligate intracellular parasites

b)

DNA or RNA (not both)

c)

Capsid ± envelope

44.

How are viroids described in the worksheet?

a)

Naked RNA in plants

b)

Need a helper virus

c)

Misfolded proteins lacking nucleic acid

45.

How are virusoids described in the worksheet?

a)

Naked RNA in plants

b)

Need a helper virus

c)

Misfolded proteins lacking nucleic acid

46.

How are prions described in the worksheet?

a)

Naked RNA in plants

b)

Need a helper virus

c)

Misfolded proteins (no nucleic acid)

47.

Based on the hepatitis viruses table, what is the transmission route for Hep A?

a)

Fecal-oral

b)

Blood

c)

Blood, sex

d)

Requires Hep B

48.

Based on the hepatitis viruses table, what is the genome type of Hep B?

a)

RNA

b)

DNA

49.

According to the hepatitis viruses table, what is the transmission route for Hep C?

a)

Fecal-oral

b)

Blood

c)

Blood, sex

d)

Requires Hep B

50.

According to the hepatitis viruses table, which other hepatitis virus does Hep D require?

a)

Hep A

b)

Hep B

c)

Hep C

d)

Hep E

51.

Based on the hepatitis viruses table, what is the genome type of Hep E?

a)

DNA

b)

RNA

52.

According to the key concepts, which statement best describes the parenteral route?

a)

It bypasses skin and mucosa.

b)

It primarily uses the gastrointestinal tract.

c)

It is transmitted by airborne droplets.

d)

It crosses the placenta during pregnancy.

53.

The comparison between ID and LD on the worksheet refers to which pair of terms?

a)

Infectious dose vs Lethal dose

b)

Inflammatory dose vs Localized dose

c)

Intermediate dose vs Low dose

d)

Inoculation duration vs Latency duration

54.

Which item listed is a virulence factor in the worksheet’s section on Virulence Factors?

a)

Adhesins

b)

Spores

c)

Flagellar motility

d)

Biofilm quorum signals

55.

Which item is not included among the virulence factors in the worksheet?

a)

Capsules

b)

Enzymes

c)

Immune evasion

d)

Photosynthetic pigments

56.

Based on the Iron & Microbes section, which strategy do microbes use to acquire iron?

a)

Producing siderophores

b)

Degrading Lipid A of LPS

c)

Photosynthesis

d)

Increasing heat stability of toxins

57.

According to the Iron & Microbes section, microbes may exploit which host molecules to obtain iron?

a)

Host iron-binding proteins

b)

Antibodies

c)

Peptidoglycan precursors

d)

Cholesterol

58.

Which characteristics on the worksheet describe exotoxins? Select all that apply.

a)

Secreted

b)

Heat-labile

c)

Specific

d)

A component of LPS

59.

Which characteristics on the worksheet describe endotoxins? Select all that apply.

a)

Lipid A of LPS

b)

Released when the bacterial cell dies

c)

Heat-stable

d)

Causes fever and shock

e)

Highly specific for particular target cells

60.

In the Other Pathogens section, which term describes visible cell damage caused by viruses?

a)

Cytopathic effects (CPEs)

b)

Siderophores

c)

Opsonization

d)

Antigenic shift

61.

Which statement about helminths aligns with the worksheet?

a)

They rely on bacterial-like toxins to cause disease.

b)

They are large and cause mechanical damage with immune evasion rather than toxin-based disease.

c)

They are viruses that primarily cause cytopathic effects.

d)

They are heat-labile secreted proteins.

62.

What does the worksheet state about eukaryotic pathogens in relation to bacteria?

a)

They share mechanisms with bacteria.

b)

They are completely unique and share no mechanisms.

c)

They only use toxins as virulence factors.

d)

They cannot evade the immune system.

63.

What is the stated role of iron in the Iron & Microbes section?

a)

Iron is essential.

b)

Iron is optional and rarely used.

c)

Iron is universally toxic to microbes.

d)

Only viruses require iron.

64.

Select all items listed as components of the 1st line of defense.

a)

Skin

b)

Mucous membranes

c)

Normal microbiota

d)

AMPs / AVPs

e)

Natural killer cells

65.

Select all items listed as components of the 2nd line of defense.

a)

Phagocytes (macrophages, neutrophils)

b)

Natural killer cells

c)

Inflammation

d)

Fever

e)

Complement system

66.

According to the notes, what do TLRs recognize?

a)

PAMPs

b)

Cytokines

c)

Antibodies

d)

APCs

67.

In the notes, cytokines are described as what?

a)

Signaling molecules

b)

Antimicrobial proteins

c)

Cell-surface receptors

d)

Barrier tissues

68.

Which listed cell type is identified as a phagocyte in the notes?

a)

Macrophages

b)

Natural killer cells

c)

Erythrocytes

d)

Mast cells

69.

Which step occurs first in the phagocytosis steps listed?

a)

Chemotaxis

b)

Adherence

c)

Ingestion

d)

Digestion

70.

According to the phagocytosis steps, which step occurs immediately after adherence?

a)

Ingestion

b)

Elimination

c)

Digestion

d)

Chemotaxis

71.

According to the phagocytosis steps, which step is the final step?

a)

Chemotaxis

b)

Digestion

c)

Elimination

d)

Adherence

72.

Which innate mechanism listed under the 2nd line of defense involves a protein cascade?

a)

Complement system

b)

AMPs / AVPs

c)

Mucous membranes

d)

Normal microbiota

73.

Which term on the worksheet refers to antimicrobial and antiviral peptides?

a)

AMPs / AVPs

b)

PAMPs

c)

TLRs

d)

NK cells

74.

Based on the listed steps of the inflammatory response, which step occurs first?

a)

Injury

b)

Vasodilation

c)

Increased permeability

d)

Cell migration

75.

Based on the listed steps of the inflammatory response, which step directly follows vasodilation?

a)

Injury

b)

Increased permeability

c)

Cell migration

d)

Repair

76.

Based on the listed steps of the inflammatory response, which step involves movement of cells to the affected area?

a)

Injury

b)

Vasodilation

c)

Increased permeability

d)

Cell migration

77.

Based on the listed steps of the inflammatory response, which step completes the process?

a)

Injury

b)

Repair

c)

Cell migration

d)

Vasodilation

78.

Which of the following is listed as one of the steps in the inflammatory response?

a)

Apoptosis

b)

Vasodilation

c)

Phagocytosis

d)

Hemostasis