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Microbiology Test 1 2nd Year PMU

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Microbiology Test 1 2nd Year PMU

Question 1 of 90

1

Name the components of nutrient media

Select one or more of the following:

  • Glucose Broth

  • Meat-Peptone Broth

  • Meat-Peptone agar

  • Blood Agar

Explanation

Question 2 of 90

1

Most of the bacterial colonies are visualized after:

Select one or more of the following:

  • 20 minutes

  • 2 hours

  • 1-2 days

  • 1 week

Explanation

Question 3 of 90

1

According to their cell wall structures bacteria divide into

Select one or more of the following:

  • Aerobes and Anarobes

  • Prokaryotes and Eukaryotes

  • Gram (+) and Gram (-)

  • Prototrophs and Auxotrophs

Explanation

Question 4 of 90

1

Extra chromosomal genetic elements in bacteria are

Select one or more of the following:

  • Mesosomes

  • Phagosomes

  • Transposons

  • Plasmids

Explanation

Question 5 of 90

1

Fill the blank spaces to complete the text.

How many phases have growth curve of bacteria?
Ans:

Name them:
a/ Phase
b/ Phase
c/ Phase
d/ Phase

Explanation

Question 6 of 90

1

Sex-pili of bacteria helps for their

Select one or more of the following:

  • Movement

  • Conjugation

  • Nutrition

  • Protection

Explanation

Question 7 of 90

1

Fill the blank spaces to complete the text.

Name the three shapes of bacteria:
a/ ()
b/
c/ ()

Explanation

Question 8 of 90

1

What is the most resistant to an unappropiate conditions bacterial form?

Select one or more of the following:

  • Vegetative

  • Spore

Explanation

Question 9 of 90

1

Which of the following bacterial structures prevents phagocytosis?

Select one or more of the following:

  • Cytoplasm

  • Peptidoglycan

  • Capsule

  • Nuclues

Explanation

Question 10 of 90

1

Are flagellas an obligatory structure of bacterium?

Select one of the following:

  • True
  • False

Explanation

Question 11 of 90

1

Fill the blank space to complete the text.

What chemical is responsible for the acid-fast property of mycobacteria?
Ans:

Explanation

Question 12 of 90

1

Fill the blank spaces to complete the text.

Name two bacteria that have capsules:
a/
b/

Explanation

Question 13 of 90

1

Fill the blank spaces to complete the text.

In microbiology what is the most commonly used objective
Ans:

Explain:
This is because unlike other liquids like water has very

Explanation

Question 14 of 90

1

What is the name of staining method for Corynebacterium diphtheriae?

Select one or more of the following:

  • Gram

  • Moller

  • Zhiehl-Neelsen

  • Neisser

Explanation

Question 15 of 90

1

Fill the blank spaces to complete the text.

Gram (+) bacteria are stained in colour and Gram (-) in colour

Explanation

Question 16 of 90

1

The main taxonomic category for bacteria is

Select one or more of the following:

  • Genus

  • Species

  • Family

  • Ordo

Explanation

Question 17 of 90

1

Fill the blank space to complete the text.

According Gram, the Gram (-) bacteria are stained in colour

Explanation

Question 18 of 90

1

The unit for bacterial size is:

Select one or more of the following:

  • milimeter

  • micrometer

  • nanometer

  • angstrom

Explanation

Question 19 of 90

1

Vibrions are curved bacteria with

Select one or more of the following:

  • 4-6 curves

  • many curves

  • one curve

  • two curves

Explanation

Question 20 of 90

1

Ziehl-Neelsen is a staining procedure in:

Select one of the following:

  • encapsulated bacteria

  • spore-forming bacteria

  • acid-fast bacteria

  • motile bacteria

Explanation

Question 21 of 90

1

Bacterial cytoplasm contains:

Select one or more of the following:

  • capsule

  • ribosomes

  • nucleotide

  • peptidoglycan

  • pili

  • inclusions

Explanation

Question 22 of 90

1

Fill the blank spaces to complete the text.

Name the purposes of simple staining:
a/ Determine cell
b/ Determine cell
c/ Determine cell

Explanation

Question 23 of 90

1

The main staining procedure that detect morphology of bacteria is:

Select one or more of the following:

  • Loeffler

  • Neisser

  • Gram

  • Pfeiffer

Explanation

Question 24 of 90

1

The name Baccilus antracis defines certain bacterial

Select one or more of the following:

  • Genus

  • Species

  • Class

Explanation

Question 25 of 90

1

Is it true: Bacterial spores are formed in unfavorable conditions and are means of multiplying

Select one of the following:

  • True
  • False

Explanation

Question 26 of 90

1

Select from the dropdown list to complete the text.

Staining according Victoria blau is a ( simple, complex ) method

Explanation

Question 27 of 90

1

Which of the following organelles are essential for bacteria?

Select one or more of the following:

  • cytoplasm membrane

  • pili

  • capsule

  • flagella

  • nucleoid

  • ribosomes

Explanation

Question 28 of 90

1

What are the curved bacteria?

Select one or more of the following:

  • staphylococci

  • helicobacter

  • vibrions

  • bacilli

Explanation

Question 29 of 90

1

Fill the blank spaces to complete the text.

Diplococci are shaped bacteria that are arranged in

Explanation

Question 30 of 90

1

Fill the blank space to complete the text.

Staphylococci are round shaped bacteria arranged in

Explanation

Question 31 of 90

1

The volutine bodies are inclusions in the cytoplasm of:

Select one or more of the following:

  • menigococci

  • diptheria bacteria

  • genococci

  • pneumococci

Explanation

Question 32 of 90

1

Where is lipopolysaccaride situated?

Select one or more of the following:

  • in the cell wall of Gram (+) bacteria

  • in the cell wall of Gram (-) bacteria

  • in the both groups

Explanation

Question 33 of 90

1

Fill the blank spaces to complete the text.

Name at least two rod-shaped bacteria
a/
b/

Explanation

Question 34 of 90

1

How many spores form one bacteria?

Select one or more of the following:

  • one

  • two

  • three

  • more than one

Explanation

Question 35 of 90

1

Fill the blank space to complete the text.

Loefler technique stain bacteria in colour

Explanation

Question 36 of 90

1

Fill the blank spaces to complete the text.

The causative agent of tuberculosis is stained in red color, using (name the staining method)

Explanation

Question 37 of 90

1

Fill the blank spaces to complete the text.

What are the two purposes of heat fixation
a/ organisms
b/ allows stain to be

Explanation

Question 38 of 90

1

Each bacteria has two names and they define its

Select one or more of the following:

  • family and genus

  • family and kingdom

  • genus and species

Explanation

Question 39 of 90

1

Bacteria cell is

Select one or more of the following:

  • eukaryotic

  • prokaryotic

Explanation

Question 40 of 90

1

Which of the following is NOT found in the cell wall of gram (-) bacteria?

Select one or more of the following:

  • Lipid A

  • Teichoic acids

  • O-antigen

  • peptidoglycan

Explanation

Question 41 of 90

1

Fill the blank spaces to complete the text.

Name the different types of bacteria pili and what are their function
a/ and its function is
b/ and its function is

Explanation

Question 42 of 90

1

Loeffler stain requires

Select one or more of the following:

  • Methylene blue

  • Ziehl fuschin

  • Gentian violet

  • Iodine solution

Explanation

Question 43 of 90

1

Which of the following methods of staining are complex

Select one or more of the following:

  • Pfeiffer

  • Neisser

  • Klett

  • Loeffler

Explanation

Question 44 of 90

1

Fill the blank space to complete the text.

Bacterium Diphteri and its structure :

Explanation

Question 45 of 90

1

Fill the blank space to complete the text.

The volutine granules of Bacterium Diphteri are visualized by : staining

Explanation

Question 46 of 90

1

The following structures are localized in the cytoplasm:

Select one or more of the following:

  • Spores

  • Nucleoids

  • Flagellum

  • Capsules

Explanation

Question 47 of 90

1

Based on their cellular structure bacteria are divided into:

Select one or more of the following:

  • Cocci and rods

  • Gram + and Gram –

  • Spares and spiral

  • Aerobes and anaerobe

Explanation

Question 48 of 90

1

Peptides Glycan polymer are found only in :

Select one or more of the following:

  • Bacterial cell

  • Animal cell

  • In viruses

Explanation

Question 49 of 90

1

Chemical structure of the capsule is composed of :

Select one or more of the following:

  • Complex polysaccharides

  • Vitamins

  • Polypeptides

Explanation

Question 50 of 90

1

Sporulation appears to be :

Select one or more of the following:

  • An initiation of reproduction of bacterial cell

  • A reaction of conditions that are unfavorable for normal growth

  • A status to resist desiccation and other harmful conditions

  • a & b

  • b & c

Explanation

Question 51 of 90

1

The complete killing or removal of all microorganisms including bacteria spores is called :

Select one or more of the following:

  • Sterilization

  • Disinfection

  • Antisepsis

  • Sepsis

Explanation

Question 52 of 90

1

Fill the blank space to complete the text.

What is the color of the simple method of Pfeiffer staining :

Explanation

Question 53 of 90

1

Pfeiffer technical staining makes use of the following :

Select one or more of the following:

  • Methylene blue

  • Carbon Fuchsine

  • Neutral red

  • Gentian violet

Explanation

Question 54 of 90

1

The cell wall of gram (+) bacteria is composed mainly :

Select one or more of the following:

  • Hitine (typical for plants)

  • Peptidoglycan (90%)

  • Cellulose

  • Sugars

Explanation

Question 55 of 90

1

Which of the following bacteria have peptidoglycan layer:

Select one or more of the following:

  • Gram (+) cocci

  • Gram (-) bacteria

  • Both of them

  • None above

Explanation

Question 56 of 90

1

Cellular DNA is concentrated in (what place) :

Select one or more of the following:

  • Cytoplasm as a nucleoid

  • Mitochondria

  • Plasmids as an extra chromosomal genetic material

  • Ribosomes

Explanation

Question 57 of 90

1

The spores stain by Moller are :

Select one or more of the following:

  • Blue color

  • Red color

  • Black color

  • Yellow color

Explanation

Question 58 of 90

1

Which structure is NOT protecting bacteria from phagocytosis from leukocytes:

Select one or more of the following:

  • Spores

  • Capsule

  • Flagella

  • Ribosome

Explanation

Question 59 of 90

1

Fill the blank spaces to complete the text.

Name two simple (basic) stains
a/
b/

Explanation

Question 60 of 90

1

The concentration of ethyl alcohol as an antiseptic for disinfection is :

Select one or more of the following:

  • 95%

  • 70%

  • 50%

  • 30%

Explanation

Question 61 of 90

1

Bacterial nucleoid consists of :

Select one or more of the following:

  • No chromosomes

  • Only one chromosome

  • Several chromosomes

Explanation

Question 62 of 90

1

What is the name of staining procedure for bacterial capsule:

Select one or more of the following:

  • Gram stain

  • Loeffler stain

  • Klett stain

  • Moller stain

Explanation

Question 63 of 90

1

Lipopolysaccharide can be found in large amount :

Select one or more of the following:

  • Gram (+)

  • Gram (-)

  • Both of them

  • None of above

Explanation

Question 64 of 90

1

Complex method for bacterial staining are :

Select one or more of the following:

  • Loeffler

  • Pfeiffer

  • Gram

  • Ziehl-Neelsen

Explanation

Question 65 of 90

1

Bacterial antibiotic resistance is frequently covered by :

Select one or more of the following:

  • Tempered bacteriophage

  • R-plasmids

  • Lipid bacteriophage

  • Intron

Explanation

Question 66 of 90

1

Fill the blank spaces to complete the text.

What constitutes a bacterial culture :
a/
b/ dry
c/

Explanation

Question 67 of 90

1

Which one is a liquid medium for bacterial culture:

Select one or more of the following:

  • Blood agar

  • Glucose broth

  • Both of them

  • None above

Explanation

Question 68 of 90

1

Anaerobes are bacteria that can tolerate high oxygen concentration

Select one of the following:

  • True
  • False

Explanation

Question 69 of 90

1

What bacterial physiologist studies :

Select one or more of the following:

  • Morphology of bacteria

  • Bacterial structure

  • Bacterial growth

  • Bacterial nutrient

Explanation

Question 70 of 90

1

70% ethanol is :

Select one or more of the following:

  • Sterilizing agent

  • Antiseptic

  • Antibiotic

  • None is true

Explanation

Question 71 of 90

1

Which of the following is most important structure related to microbial attachment to cells :

Select one or more of the following:

  • Flagellum

  • Plasmid

  • Peptidoglycan

  • Ordinary Pilli

Explanation

Question 72 of 90

1

Which statement about genetic transfer among bacteria requires cell to cell contact:

Select one or more of the following:

  • Process of conjugation

  • Process of transduction

  • Process of transcription

  • Process of auto combination

  • Process of transformation

Explanation

Question 73 of 90

1

Which of the following related to endotoxin is not true:

Select one or more of the following:

  • Endotoxins are secreted from living cells

  • Endotoxins are part of cellular gram (-) bacteria

  • They are secreted only when the cell is disrupted

  • They can be linked to meningococcemia

  • They are produced by gram(-) microorganisms

  • They cause fever

Explanation

Question 74 of 90

1

What cause (hint) to be pink :

Select one or more of the following:

  • Carbon Fuchsin

  • Iodine solution

  • Crystal violet

  • Neisser A

Explanation

Question 75 of 90

1

Gram (-) bacteria differ from Gram (+) ones because the posses :

Select one or more of the following:

  • Lipopolysaccharide

  • Peptidoglycan

  • Only cytoplasmic membrane

  • Lipoteichoic acid

Explanation

Question 76 of 90

1

The auto-sterilisation requires the following :

Select one or more of the following:

  • 1:30 hours at 160 C

  • 134 C for 10-15 minutes

Explanation

Question 77 of 90

1

The chlorine is :

Select one or more of the following:

  • Antiseptic

  • Disinfectant

  • Chemical agent for sterilization

  • All of above

Explanation

Question 78 of 90

1

Concerning bacterial cell division everything is true except that :

Select one or more of the following:

  • All bacteria double their numbers every 10 hours

  • Bacterial generation times are influenced by environmental conditions

  • Two bacterial cells following division are genetically identical and they are once

Explanation

Question 79 of 90

1

How does high temperature cause cell death?

Select one or more of the following:

  • Oxidative damage

  • High level of electrolytes

  • Protein denature

  • All of above

Explanation

Question 80 of 90

1

How are the actions of phenols and alcohols similar :

Select one or more of the following:

  • Both denature proteins

  • Both oxidize DNA

  • Both inhibit nucleic acid synthesis

  • All of above

Explanation

Question 81 of 90

1

What is pasteurization :

Select one or more of the following:

  • A method that disinfects the instruments

  • Sterilizes food

  • A method that can be used on skin and mucus

  • All of above

Explanation

Question 82 of 90

1

Bacterial flagella are :

Select one or more of the following:

  • Composed of pillin

  • A floppy structure made of flagellin

  • Rigger structure made of flagellin

Explanation

Question 83 of 90

1

Name the complex nutrient media :

Select one or more of the following:

  • Glucose broth

  • Mid peptone broth

  • Mid peptone agar

  • Blood agar

Explanation

Question 84 of 90

1

Extra chromosomal genetic elements in bacteria are :

Select one or more of the following:

  • Mesosomes

  • Phagosomes

  • Transposomes

  • Bacteriophages ( or plasmids)

Explanation

Question 85 of 90

1

Fill the blank spaces to complete the text.

What part of the bacterial cell is most involved with Gram staining and why?
Ans:
Explanation: Gram bacteria have a peptidoglycan cell that holds the stain than the peptidoglycan gram cell

Explanation

Question 86 of 90

1

Fill the blank spaces to complete the text.

What is the purpose of heat during the acid-fast staining procedure?
The heat the stain the cells

Explanation

Question 87 of 90

1

Fill the blank spaces to complete the text.

Name two curved bacteria:
a.
b.

Explanation

Question 88 of 90

1

Fill the blank spaces to complete the text.

Name the reagent used and state the purpose of each of the following
a/ mordant: Reagent- solution, Function: form a between the crystal violet and
b/ primary stain: Reagent- , Function: increases the of both gram-negative and gram-positive bacteria
c/ decolorizer: Reagent- , Function: the peptidoglycan layer
d/ counterstain: Reagent- , Function: stains solution light allowing Gram to be seen

Explanation

Question 89 of 90

1

Fill the blank space to complete the text.

Round bacteria in chains are named

Explanation

Question 90 of 90

1

Select from the dropdown lists to complete the text.

What suggestions about endotoxins are true?
a/ they are typical for ( Gram (-), Gram (+) )
b/ they act ( non-specific, specific )
c/ their chemical structure is ( lipopolysaccarides, proteins )
d/ they are heat ( stable, labile )

Explanation

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