20763099
Beschreibung
Quiz von Max Tuggle, aktualisiert more than 1 year ago
|
Erstellt von Max Tuggle
vor mehr als 6 Jahre
|
|
Frage 1
Frage
Mark the common feature between eukaryotes and prokaryotes
Antworten
-
Shape of DNA
-
Number of chromosomes
-
A prokaryotic cell is similar to a eukaryotic organelle
-
Cell wall
-
Peptidoglycan
Frage 2
Frage
The largest bacteria which can be visible by unaided eye is_______
Antworten
-
Thiomargarita namibiensis
-
Lactobacillus
-
Mycoplasma
-
Pseudomonas
Frage 3
Frage
Which of the following is NOT bacteria?
Antworten
-
Gram-positive bacteria
-
Mitochondrion
-
Chloroplast
-
Methanogens
-
Hyperthermophiles
Frage 4
Frage
Peptidoglycan
Antworten
-
Bacteria and gives energy to cell
-
Archaea and gives energy to cell
-
Bacteria and gives strength to structure
-
Archaea and gives strength to structure
-
Bacteria and assists with growth
Frage 5
Frage
Which of the following is NOT the basic shape of the bacteria?
Antworten
-
Rod shape
-
Square shape
-
Comma shape
-
Spiral shape
Frage 6
Frage
Which of the following organisms have thick peptidoglycan in their cell wall?
Antworten
-
Gram-negative bacteria
-
Gram-positive bacteria
-
Yeast
-
Moulds
-
Prion
Frage 7
Frage
Each of the following statements concerning the Gram stain is correct except:
Antworten
-
Escherichia coli stains pink because it has a thin peptidoglycan layer
-
Streptococcus pyogens stains blue because it has a thick peptidoglycan layer
-
Mycoplasma pneumoniae is not visible in the Gram’s stain because it does not have a cell wall
-
Mycobacterium tuberculosis stains blue because it has a thick lipid layer
-
Escherichia coli stains pink because it has a thick peptidoglycan layer
Frage 8
Frage
Which among the following are produced by microorganisms?
Antworten
-
Fermented dairy products
-
Breads
-
Alcoholic beverages
-
All of the above
Frage 9
Frage
Type strain is used for referring to?
Antworten
-
Species
-
Genus
-
Family
-
Division
Frage 10
Frage
The correct order of taxonomic groups from higher to lower rank is?
Antworten
-
Kingdom—Order—Class—Family
-
Order—Class—Division—Family—Genus—Species
-
Kingdom—Order—Division—Family—Class—Genus—Species
-
Kingdom—Division—Class—Order—Family—Genus—Species
-
Order—genus—Class—Family—Division—Kingdom
Frage 11
Frage
What are ribosomes composed of?
Antworten
-
Proteins
-
Proteins and DNA
-
DNA
-
RNA
-
Proteins and RNA
Frage 12
Frage
What is the correct order of staining reagents in Gram-Staining?
Antworten
-
Crystal violet, alcohol, iodine solution, safranin
-
Crystal violet, iodine solution, safranin, alcohol
-
Crystal violet, iodine solution, alcohol, safranin
-
Crystal violet, safranin, alcohol, iodine solution
-
Iodine solution, crystal violet, alcohol, safranin
Frage 13
Frage
Which bacteria appears purple-violet colour after staining?
Antworten
-
Gram-positive
-
Gram-negative
-
Niether
-
Both Gram-positive and Gram-negative
-
Neither Gram-positive nor Gram-negative
Frage 14
Frage
Which of the following are true for Gram-negative bacteria?
Antworten
-
Upon alcohol treatment, the permeability of the cell wall increases
-
Crystal violet-iodine (CV-I) complex is extracted
-
Pore size decreases and the CV-I complex cannot be extracted
-
Alcohol treatment increases the permeability of the cell wall and the CV-I complex can be extracted
-
Upon alcohol treatment, the permeability of the cell wall decreases
Frage 15
Frage
Which of the staining technique helps in demonstrating spore structure in bacteria as well as free spores?
Antworten
-
Acid-fast stain
-
Endospore stain
-
Capsule stain
-
Flagella stain
-
Blood stain
Frage 16
Frage
In Gram-staining, iodine is used as a______________
Antworten
-
Fixative
-
Mordant
-
Solubilizer
-
unsolubilizer
-
Stain
Frage 17
Frage
Which of the following is the example of Gram-negative bacteria?
Antworten
-
Lactobacillus
-
Eschericia coli
-
Staphylococcus aureus
-
Bacillus subtilis
Frage 18
Frage
Peptidoglycan layer is present in large quantity in?
Antworten
-
Algae
-
Fungi
-
Gram-negative bacteria
-
Gram-positive bacteria
-
Archaea
Frage 19
Frage
The outer membarane of the Gram-negative cell wall is anchored to the underlying peptidoglycan by means of which of the following?
Antworten
-
Braun’s Lipoprotein
-
Sugars
-
Phospholipids
-
Lipopolysaccharide
-
Proteins
Frage 20
Frage
The organisms which can use reduced inorganic compounds as electron donors are known
as _________
Antworten
-
Chemotrophs
-
Euryarchaeota
-
Organotrophs
-
Lithotrophs
-
Phototrophs
Frage 21
Frage
The organisms which obtain energy by the oxidation of electron donor
are ________
Antworten
-
Eukaryotes
-
Lichen
-
Crenarchaeota
-
Virus
-
Chemotrophs
Frage 22
Frage
Autotrophs are consumers. E.g. dogs, birds, fish and humans.
Antworten
- True
- False
Frage 23
Frage
Halophiles thrive in high salt conditions
Antworten
- True
- False
Frage 24
Frage
Psychrophiles thrive in high temperatures.
Antworten
- True
- False
Frage 25
Frage
What is the conversion of carbon-containing molecules and nutrients into organic matter and uses oxidation of inorganic compounds as a source of energy?
Antworten
-
Endocytosis
-
Phagocytosis
-
Protozoa
-
Binary Fission
-
Chemosythesis
Frage 26
Frage
Archaea are prokaryotes.
Antworten
- True
- False
Frage 27
Frage
Which of the following are functions of water in the culture medium?
Antworten
-
Nutrients must be in aqueous solution
-
Stable pH level
-
Cofactor of enzymes
-
Provides resistance to sudden transient temperature changes
-
It is a chemical reactant, nutrients must also be present in aqueous solution and provides resistance to sudden temperature changes.
Frage 28
Frage
Which of the following instrument is used for sterilizing the media after it has been prepared?
Antworten
-
Autoclave
-
Distilled water
-
Laminar Air Flow Chamber
-
Inoculum Needle
-
Incubator
Frage 29
Frage
Colony formation can be observed in liquid media broth.
Antworten
- True
- False
Frage 30
Frage
The temperature that allows for most rapid growth during a short period of time is known as __________.
Antworten
-
Minimum Temperature
-
Optimum Temperature
-
Medium Temperature
-
Growth Temperature
-
Maximum Temperature
Frage 31
Frage
Mesophiles are group of bacteria that grow within the temperature range of?
Antworten
-
Less than 0 degree Celsius
-
0-20 degree Celsius
-
25-40 degree Celsius
-
45-60 degree Celsius
-
More than 60 degree Celsius
Frage 32
Frage
The bacterium Staphylococcus aureus is which type of bacteria?
Antworten
-
Psychrophile
-
Mesophile
-
Thermophile
-
Mesophile and psychrophile
-
Neutrophile
Frage 33
Frage
Microaerophilic bacteria require low levels of oxygen for growth.
Antworten
- True
- False
Frage 34
Frage
Which of the following is a function of phosphates used in the preparation of media?
Antworten
-
They act as buffer
-
Nothing
-
Source of phosphorous
-
Act as “reserve alkali”
-
They act as buffer and is a source of phosphorous
Frage 35
Frage
The optimum pH for the growth of most bacteria lies between_______
Antworten
-
5 - 9
-
6.5 - 7.5
-
2 - 3.5
-
9 - 9.5
-
4 - 5
Frage 36
Frage
Growth of bacteria or microorganisms refer to __________________.
Antworten
-
Glucose cello-logy
-
An increase in the size of an individual organism
-
An increase in the mass of an individual organism
-
Changes in the total population
-
An increase in number of cells
Frage 37
Frage
Transverse binary fission requires the formation of a crosswall(septum).
Antworten
- True
- False
Frage 38
Frage
The synthesis of new membrane material during reproduction in Gram-positive cells is performed by which of the following organelles?
Antworten
-
Nucleus
-
Mesosome
-
Endoplasmic Reticulum
-
Cytoplasmic membrane
-
Ribosome
Frage 39
Frage
When septum formation occurs near the pole of cell then it results in the formation of daughter cell known as _________
Antworten
-
Microcell
-
Macrocell
-
Minicell
-
Daughter cell
-
New cell
Frage 40
Frage
Which of the following does not occur during binary fission in bacteria?
Antworten
-
Chromosome separation
-
Cell elongation
-
Cytokinesis
-
DNA duplication
-
Spindle formation
Frage 41
Frage
The portion of the growth curve where a rapid growth of bacteria is observed is known as ____________
Antworten
-
Lag phase
-
Logarithmic phase
-
Stationary phase
-
Decline phase
-
Improvement phase
Frage 42
Frage
Lag phase is also known as ___________
Antworten
-
Period of initial adjustment
-
Transitional period
-
Generation time
-
Period of rapid growth
-
Pausing
Frage 43
Frage
In which of the following phase secondary metabolites are produced during growth?
Antworten
-
Lag phase
-
Log/Exponential phase
-
Stationary phase
-
Death phase
Frage 44
Frage
Which of the following is an indirect method for measuring bacterial growth?
Antworten
-
Cell count
-
Cell mass
-
Cell activity
-
Both Cell mass and Cell activity
-
Cell size
Frage 45
Frage
Isolation of pure culture refers to ___________
Antworten
-
Purification of culture
-
Trapping all microorganisms
-
Introduction of inoculum
-
Separation of a single colony
-
To grow microorganisms on a surface
Frage 46
Frage
Enrichment media allows the growth of a large number of varied bacterial species
Antworten
- True
- False
Frage 47
Frage
A large cluster of colonies are obtained in streak plate method.
Antworten
- True
- False
Frage 48
Frage
The respiratory chain of bacteria is associated with the _____________
Antworten
-
Mitochondrial membrane
-
Cytoplasmic membrane
-
Cell wall
-
Cytoplasm
-
Ribosome
Frage 49
Frage
Safranin will stain bacterial cells blue
Antworten
- True
- False
Frage 50
Frage
Cocci is spherical shaped.
Antworten
- True
- False
Frage 51
Frage
Protozoa is colourless
Antworten
- True
- False
Frage 52
Frage
What does protozoa use to obtain nutrients?
Antworten
-
Osmosis
-
Photosynthesis
-
Chemosynthesis
-
Phagocytosis
-
Passive transport
Frage 53
Frage
Fungi have a cell wall
Antworten
- True
- False
Frage 54
Frage
Viruses of bacteria that can kill and lyse the bacteria they infect are called _________
Antworten
-
Lichen
-
Infections
-
Vaccination
-
Anti-microphile
-
Bacteriophage
Frage 55
Frage
Protozoa are eukaryotes
Antworten
- True
- False
Frage 56
Frage
Whats made up of single types of protein subunits stacked around a central axis. (E.g. Tobacco mosaic virus.)
Antworten
-
Polyhedral
-
Helical
-
Complex
-
Envelop
-
Spherical
Frage 57
Frage
What virus has a tail?
Antworten
-
Helical
-
Polyhedral
-
Complex
-
Envelop
-
Spherical
Frage 58
Frage
Adenovirus is an _______
Antworten
-
Helical
-
Polyhedral
-
Complex
-
Envelop
-
Spherical
Frage 59
Frage
Viruses are unicellular
Antworten
- True
- False
Frage 60
Frage
Protein synthesis occurs in the Influenza life cycle.
Antworten
- True
- False
Frage 61
Frage
Acidophile
Antworten
-
pH 5 or below
-
pH 6 - 8
-
pH 9+
Frage 62
Frage
What cannot grow in the presence of oxygen
Antworten
-
Strict aerobe
-
Strict anaerobe
-
Facultative anaerobes
-
Aero-tolerent anaerobes
-
Micro-aerophile
Frage 63
Frage
What grows better in the presence of oxygen, but will grow without it?
Antworten
-
Strict aerobe
-
Strict anaerobe
-
Facultative anaerobes
-
Aero-Tolerant anaerobes
-
Micro-aerophile
Frage 64
Frage
What depends on oxygen to grow
Antworten
-
Strict aerobe
-
Strict anaerobe
-
Facultative anaerobes
-
Aero-Tolerant anaerobes
-
Micro-aerophile
Frage 65
Frage
Gram negative bacteria......
Which statement is wrong?
Antworten
-
10% of cell wall is peptidoglycan
-
Contains teichoic acid
-
No outer membrane
-
Does not retain crystal violet
-
High lipid/lipoprotein content
Frage 66
Frage
Gram postive bacteria....
Which answer is wrong?
Antworten
-
90% of cell wall is peptidoglycan
-
Contains teichoic
-
High lipid/lipoprotein content
-
Retains crystal violet
-
Has outer membrane
Frage 67
Frage
The function of bacteria capsule is to _________
Antworten
-
Link amino acids together in the order specified by mRNA.
-
Assit in attaching to other cells and surfaces.
-
Help bacteria move towards nutrients and away from toxic chemicals.
-
Keep bacterium from drying out and protects from phagocytosis.
-
Regulate passage of substances in and out of cell.
Frage 68
Frage
The function of bacteria pilli is to _________
Antworten
-
Link amino acids together in the order specified by mRNA.
-
Assit in attaching to other cells and surfaces.
-
Help bacteria move towards nutrients and away from toxic chemicals.
-
Keep bacterium from drying out and protects from phagocytosis.
-
Regulate passage of substances in and out of cell.
Frage 69
Frage
Bacterial life cycle is an asexual process
Antworten
- True
- False
Frage 70
Frage
Lysozymes in tears kills ________.
Antworten
-
Infection
-
Viruses
-
Moulds
-
Gram-positive bacteria
-
Gram-negative bacteria
Frage 71
Frage
Influenze virus is polyhedral
Antworten
- True
- False
Frage 72
Frage
Adenovirus is polyhedral.
Antworten
- True
- False
Frage 73
Frage
Bacteria from a pure culture which is used to start a new culture is called __________?
Antworten
-
Spreading
-
Agar
-
Gram negative
-
Gram postive
-
Inoculum
Frage 74
Frage
Enveloped viruses are less sensitive to drying/heating conditions rather than naked capsid viruses.
Antworten
- True
- False
Frage 75
Frage
The naked capsid virus is more hostile compared to the enveloped virus due to it breaking down the cell membrane through lysis.
Antworten
- True
- False
Frage 76
Frage
In the virus life cycle, an active, intracellular stage is called the __________ stage.
Antworten
-
Metabolic
-
Infectious
-
Log
-
Attachment
-
Biosynthesis
Frage 77
Frage
The area of no growth is what we call a ____________
Antworten
-
Viral plaque
-
Complex
-
Plaque assay
-
Inoculum
-
Spec
Frage 78
Frage
Where would you find a prophage?
Antworten
-
Virus life cycle
-
Lytic life cycle
-
Lysogenic life cycle
-
Bacterial life cycle
-
Food life cycle
Frage 79
Frage
Another word for lytic is [blank_start]virulent[blank_end]
Antworten
-
virulent
Frage 80
Frage
Another word for lysogenic is [blank_start]temperate[blank_end].
Antworten
-
temperate
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.