MIC100 Week Three Review

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microbiology

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Dr. David Myers

Estados Unidos

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18 de Agosto de 2024

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MIC100 Week Three ReviewVersión en línea microbiology por Dr. David Myers 1 Which of the following is a characteristic used in the classification and identification of bacteria? a Geographic origin b Cell morphology c Color of colony d Size of the bacterial cell 2 Bacteria that lack a cell wall: a Gram-positive b Gram-negative c Mycoplasma sp d Spirochetes 3 Which of the following shapes describes rod-shaped bacteria? a Cocci b Bacilli c Spirilla d Vibrio 4 Cocci bacteria can be found in which of the following arrangements? a Chains b Clusters c Tetrads d All of these are possible arrangements 5 What is the average diameter of a coccus? a 0.5 µm b 1 µm c 2 µm d 5 µm 6 Which of the following is NOT a characteristic of bacilli? a Short or long b Round shape c Thick or thin d Pointed or blunt ends 7 An average-sized bacillus measures approximately: a 1 x 1 µm b 1 x 2 µm c 1 x 3 µm d 2 x 2 µm 8 Which of the following bacteria are classified as curved bacteria? a Escherichia b Treponema c Vibrio d Bacillus 9 Examples of spiral-shaped bacteria include: a Campylobacter b Borrelia c Helicobacter d Neisseria 10 What is the most common structure associated with bacterial motility? a Pili b Flagella c Capsules d Endotoxins 11 Which of the following is NOT a classification of bacteria based on their atmospheric requirements? a Obligate aerobes b Facultative anaerobes c Capnophilic organisms d Anaerobic fermenters 12 Capnophilic organisms grow best in the presence of increased concentrations of: a Oxygen b Nitrogen c Carbon dioxide d Hydrogen 13 Which of the following elements is NOT typically required by bacteria for growth? a Carbon b Helium c Nitrogen d Phosphorus 14 Bacteria with special and demanding nutritional requirements are termed: a Simple b Basic c Fastidious d Invasive 15 Which of the following bacteria are examples of medically important bacilli? a Helicobacter b Bacillus c Vibrio d Treponema 16 Pathogenic bacteria that secrete enzymes are often tentatively identified based on: a Their color b The gases they produce c The enzymes they secrete d Their shape 17 Which of the following bacteria is known for producing hydrogen sulfide? a Neisseria meningitidis b Vibrio cholerae c Salmonella typhi d Treponema pallidum 18 Bacteria that possess capsules, pili, or endotoxins are more likely to: a Be non-pathogenic b Cause disease c Be gram-positive d Have a complex shape 19 Which of the following is NOT a common pathogenic bacterium? a Yersinia pestis b Shigella spp. c Haemophilus d Treponema pallidum 20 Which bacterial shape can be described as "spiral"? a Cocci b Bacilli c Vibrio d Spirilla 21 Which of the following arrangements is characteristic of cocci? a Chains b Filaments c Spirals d Rods 22 Bacteria that can grow in the presence of increased CO2 are known as: a Capnophilic b Aerotolerant c Microaerophilic d Facultative 23 Which bacteria are known for their spiral shape and are often found in cases of Lyme disease? a Treponema b Borrelia c Helicobacter d Vibrio 24 Which of the following statements about bacterial motility is TRUE? a Most cocci are motile. b Bacterial motility is often associated with flagella c Only bacilli are motile d Motility is associated with ribosomes 25 Bacilli that are extremely short and resemble cocci are termed: a Coccobacilli b Diplobacilli c Streptobacilli d Spirilla 26 Which of the following is NOT a type of bacterial arrangement? a Tetrads b Octads c Clusters d Helicoids 27 Which group of bacteria includes Neisseria meningitidis and Vibrio cholerae? a Bacilli b Cocci c Curved bacteria d Spiral bacteria 28 Which type of bacteria would most likely be classified as an aerotolerant anaerobe? a Bacteria that grow best with high levels of oxygen b Bacteria that do not require oxygen but can tolerate its presence c Bacteria that require oxygen for growth d Bacteria that only grow in low oxygen levels

MIC100 Week Three ReviewVersión en línea

microbiology

por Dr. David Myers

Which of the following is a characteristic used in the classification and identification of bacteria?

Geographic origin

Cell morphology

Color of colony

Size of the bacterial cell

Bacteria that lack a cell wall:

Gram-positive

Gram-negative

Mycoplasma sp

Spirochetes

Which of the following shapes describes rod-shaped bacteria?

Cocci

Bacilli

Spirilla

Vibrio

Cocci bacteria can be found in which of the following arrangements?

Chains

Clusters

Tetrads

All of these are possible arrangements

What is the average diameter of a coccus?

0.5 µm

1 µm

2 µm

5 µm

Which of the following is NOT a characteristic of bacilli?

Short or long

Round shape

Thick or thin

Pointed or blunt ends

An average-sized bacillus measures approximately:

1 x 1 µm

1 x 2 µm

1 x 3 µm

2 x 2 µm

Which of the following bacteria are classified as curved bacteria?

Escherichia

Treponema

Vibrio

Bacillus

Examples of spiral-shaped bacteria include:

Campylobacter

Borrelia

Helicobacter

Neisseria

What is the most common structure associated with bacterial motility?

Pili

Flagella

Capsules

Endotoxins

Which of the following is NOT a classification of bacteria based on their atmospheric requirements?

Obligate aerobes

Facultative anaerobes

Capnophilic organisms

Anaerobic fermenters

Capnophilic organisms grow best in the presence of increased concentrations of:

Oxygen

Nitrogen

Carbon dioxide

Hydrogen

Which of the following elements is NOT typically required by bacteria for growth?

Carbon

Helium

Nitrogen

Phosphorus

Bacteria with special and demanding nutritional requirements are termed:

Simple

Basic

Fastidious

Invasive

Which of the following bacteria are examples of medically important bacilli?

Helicobacter

Bacillus

Vibrio

Treponema

Pathogenic bacteria that secrete enzymes are often tentatively identified based on:

Their color

The gases they produce

The enzymes they secrete

Their shape

Which of the following bacteria is known for producing hydrogen sulfide?

Neisseria meningitidis

Vibrio cholerae

Salmonella typhi

Treponema pallidum

Bacteria that possess capsules, pili, or endotoxins are more likely to:

Be non-pathogenic

Cause disease

Be gram-positive

Have a complex shape

Which of the following is NOT a common pathogenic bacterium?

Yersinia pestis

Shigella spp.

Haemophilus

Treponema pallidum

Which bacterial shape can be described as "spiral"?

Cocci

Bacilli

Vibrio

Spirilla

Which of the following arrangements is characteristic of cocci?

Chains

Filaments

Spirals

Rods

Bacteria that can grow in the presence of increased CO2 are known as:

Capnophilic

Aerotolerant

Microaerophilic

Facultative

Which bacteria are known for their spiral shape and are often found in cases of Lyme disease?

Treponema

Borrelia

Helicobacter

Vibrio

Which of the following statements about bacterial motility is TRUE?

Most cocci are motile.

Bacterial motility is often associated with flagella

Only bacilli are motile

Motility is associated with ribosomes

Bacilli that are extremely short and resemble cocci are termed:

Coccobacilli

Diplobacilli

Streptobacilli

Spirilla

Which of the following is NOT a type of bacterial arrangement?

Tetrads

Octads

Clusters

Helicoids

Which group of bacteria includes Neisseria meningitidis and Vibrio cholerae?

Bacilli

Cocci

Curved bacteria

Spiral bacteria

Which type of bacteria would most likely be classified as an aerotolerant anaerobe?

Bacteria that grow best with high levels of oxygen

Bacteria that do not require oxygen but can tolerate its presence

Bacteria that require oxygen for growth

Bacteria that only grow in low oxygen levels

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