Copiar e Editar

BHCS001 Basic Immunity, bacterial & viral structure (1-3)

Descrição

Basic infection, immunity & therapeutics. Bacterial & viral structure and function Bacterial & viral human pathogens & life cycles
Max Tuggle
Quiz por Max Tuggle, atualizado more than 1 year ago
Max Tuggle
Criado por Max Tuggle mais de 6 anos atrás
25
0
0

Resumo de Recurso

Questão 1

Questão
Mark the common feature between eukaryotes and prokaryotes
Responda
  • Shape of DNA
  • Number of chromosomes
  • A prokaryotic cell is similar to a eukaryotic organelle
  • Cell wall
  • Peptidoglycan

Questão 2

Questão
The largest bacteria which can be visible by unaided eye is_______
Responda
  • Thiomargarita namibiensis
  • Lactobacillus
  • Mycoplasma
  • Pseudomonas

Questão 3

Questão
Which of the following is NOT bacteria?
Responda
  • Gram-positive bacteria
  • Mitochondrion
  • Chloroplast
  • Methanogens
  • Hyperthermophiles

Questão 4

Questão
Peptidoglycan
Responda
  • 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

Questão 5

Questão
Which of the following is NOT the basic shape of the bacteria?
Responda
  • Rod shape
  • Square shape
  • Comma shape
  • Spiral shape

Questão 6

Questão
Which of the following organisms have thick peptidoglycan in their cell wall?
Responda
  • Gram-negative bacteria
  • Gram-positive bacteria
  • Yeast
  • Moulds
  • Prion

Questão 7

Questão
Each of the following statements concerning the Gram stain is correct except:
Responda
  • 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

Questão 8

Questão
Which among the following are produced by microorganisms?
Responda
  • Fermented dairy products
  • Breads
  • Alcoholic beverages
  • All of the above

Questão 9

Questão
Type strain is used for referring to?
Responda
  • Species
  • Genus
  • Family
  • Division

Questão 10

Questão
The correct order of taxonomic groups from higher to lower rank is?
Responda
  • 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

Questão 11

Questão
What are ribosomes composed of?
Responda
  • Proteins
  • Proteins and DNA
  • DNA
  • RNA
  • Proteins and RNA

Questão 12

Questão
What is the correct order of staining reagents in Gram-Staining?
Responda
  • 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

Questão 13

Questão
Which bacteria appears purple-violet colour after staining?
Responda
  • Gram-positive
  • Gram-negative
  • Niether
  • Both Gram-positive and Gram-negative
  • Neither Gram-positive nor Gram-negative

Questão 14

Questão
Which of the following are true for Gram-negative bacteria?
Responda
  • 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

Questão 15

Questão
Which of the staining technique helps in demonstrating spore structure in bacteria as well as free spores?
Responda
  • Acid-fast stain
  • Endospore stain
  • Capsule stain
  • Flagella stain
  • Blood stain

Questão 16

Questão
In Gram-staining, iodine is used as a______________
Responda
  • Fixative
  • Mordant
  • Solubilizer
  • unsolubilizer
  • Stain

Questão 17

Questão
Which of the following is the example of Gram-negative bacteria?
Responda
  • Lactobacillus
  • Eschericia coli
  • Staphylococcus aureus
  • Bacillus subtilis

Questão 18

Questão
Peptidoglycan layer is present in large quantity in?
Responda
  • Algae
  • Fungi
  • Gram-negative bacteria
  • Gram-positive bacteria
  • Archaea

Questão 19

Questão
The outer membarane of the Gram-negative cell wall is anchored to the underlying peptidoglycan by means of which of the following?
Responda
  • Braun’s Lipoprotein
  • Sugars
  • Phospholipids
  • Lipopolysaccharide
  • Proteins

Questão 20

Questão
The organisms which can use reduced inorganic compounds as electron donors are known as _________
Responda
  • Chemotrophs
  • Euryarchaeota
  • Organotrophs
  • Lithotrophs
  • Phototrophs

Questão 21

Questão
The organisms which obtain energy by the oxidation of electron donor are ________
Responda
  • Eukaryotes
  • Lichen
  • Crenarchaeota
  • Virus
  • Chemotrophs

Questão 22

Questão
Autotrophs are consumers. E.g. dogs, birds, fish and humans.
Responda
  • True
  • False

Questão 23

Questão
Halophiles thrive in high salt conditions
Responda
  • True
  • False

Questão 24

Questão
Psychrophiles thrive in high temperatures.
Responda
  • True
  • False

Questão 25

Questão
What is the conversion of carbon-containing molecules and nutrients into organic matter and uses oxidation of inorganic compounds as a source of energy?
Responda
  • Endocytosis
  • Phagocytosis
  • Protozoa
  • Binary Fission
  • Chemosythesis

Questão 26

Questão
Archaea are prokaryotes.
Responda
  • True
  • False

Questão 27

Questão
Which of the following are functions of water in the culture medium?
Responda
  • 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.

Questão 28

Questão
Which of the following instrument is used for sterilizing the media after it has been prepared?
Responda
  • Autoclave
  • Distilled water
  • Laminar Air Flow Chamber
  • Inoculum Needle
  • Incubator

Questão 29

Questão
Colony formation can be observed in liquid media broth.
Responda
  • True
  • False

Questão 30

Questão
The temperature that allows for most rapid growth during a short period of time is known as __________.
Responda
  • Minimum Temperature
  • Optimum Temperature
  • Medium Temperature
  • Growth Temperature
  • Maximum Temperature

Questão 31

Questão
Mesophiles are group of bacteria that grow within the temperature range of?
Responda
  • Less than 0 degree Celsius
  • 0-20 degree Celsius
  • 25-40 degree Celsius
  • 45-60 degree Celsius
  • More than 60 degree Celsius

Questão 32

Questão
The bacterium Staphylococcus aureus is which type of bacteria?
Responda
  • Psychrophile
  • Mesophile
  • Thermophile
  • Mesophile and psychrophile
  • Neutrophile

Questão 33

Questão
Microaerophilic bacteria require low levels of oxygen for growth.
Responda
  • True
  • False

Questão 34

Questão
Which of the following is a function of phosphates used in the preparation of media?
Responda
  • They act as buffer
  • Nothing
  • Source of phosphorous
  • Act as “reserve alkali”
  • They act as buffer and is a source of phosphorous

Questão 35

Questão
The optimum pH for the growth of most bacteria lies between_______
Responda
  • 5 - 9
  • 6.5 - 7.5
  • 2 - 3.5
  • 9 - 9.5
  • 4 - 5

Questão 36

Questão
Growth of bacteria or microorganisms refer to __________________.
Responda
  • 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

Questão 37

Questão
Transverse binary fission requires the formation of a crosswall(septum).
Responda
  • True
  • False

Questão 38

Questão
The synthesis of new membrane material during reproduction in Gram-positive cells is performed by which of the following organelles?
Responda
  • Nucleus
  • Mesosome
  • Endoplasmic Reticulum
  • Cytoplasmic membrane
  • Ribosome

Questão 39

Questão
When septum formation occurs near the pole of cell then it results in the formation of daughter cell known as _________
Responda
  • Microcell
  • Macrocell
  • Minicell
  • Daughter cell
  • New cell

Questão 40

Questão
Which of the following does not occur during binary fission in bacteria?
Responda
  • Chromosome separation
  • Cell elongation
  • Cytokinesis
  • DNA duplication
  • Spindle formation

Questão 41

Questão
The portion of the growth curve where a rapid growth of bacteria is observed is known as ____________
Responda
  • Lag phase
  • Logarithmic phase
  • Stationary phase
  • Decline phase
  • Improvement phase

Questão 42

Questão
Lag phase is also known as ___________
Responda
  • Period of initial adjustment
  • Transitional period
  • Generation time
  • Period of rapid growth
  • Pausing

Questão 43

Questão
In which of the following phase secondary metabolites are produced during growth?
Responda
  • Lag phase
  • Log/Exponential phase
  • Stationary phase
  • Death phase

Questão 44

Questão
Which of the following is an indirect method for measuring bacterial growth?
Responda
  • Cell count
  • Cell mass
  • Cell activity
  • Both Cell mass and Cell activity
  • Cell size

Questão 45

Questão
Isolation of pure culture refers to ___________
Responda
  • Purification of culture
  • Trapping all microorganisms
  • Introduction of inoculum
  • Separation of a single colony
  • To grow microorganisms on a surface

Questão 46

Questão
Enrichment media allows the growth of a large number of varied bacterial species
Responda
  • True
  • False

Questão 47

Questão
A large cluster of colonies are obtained in streak plate method.
Responda
  • True
  • False

Questão 48

Questão
The respiratory chain of bacteria is associated with the _____________
Responda
  • Mitochondrial membrane
  • Cytoplasmic membrane
  • Cell wall
  • Cytoplasm
  • Ribosome

Questão 49

Questão
Safranin will stain bacterial cells blue
Responda
  • True
  • False

Questão 50

Questão
Cocci is spherical shaped.
Responda
  • True
  • False

Questão 51

Questão
Protozoa is colourless
Responda
  • True
  • False

Questão 52

Questão
What does protozoa use to obtain nutrients?
Responda
  • Osmosis
  • Photosynthesis
  • Chemosynthesis
  • Phagocytosis
  • Passive transport

Questão 53

Questão
Fungi have a cell wall
Responda
  • True
  • False

Questão 54

Questão
Viruses of bacteria that can kill and lyse the bacteria they infect are called _________
Responda
  • Lichen
  • Infections
  • Vaccination
  • Anti-microphile
  • Bacteriophage

Questão 55

Questão
Protozoa are eukaryotes
Responda
  • True
  • False

Questão 56

Questão
Whats made up of single types of protein subunits stacked around a central axis. (E.g. Tobacco mosaic virus.)
Responda
  • Polyhedral
  • Helical
  • Complex
  • Envelop
  • Spherical

Questão 57

Questão
What virus has a tail?
Responda
  • Helical
  • Polyhedral
  • Complex
  • Envelop
  • Spherical

Questão 58

Questão
Adenovirus is an _______
Responda
  • Helical
  • Polyhedral
  • Complex
  • Envelop
  • Spherical

Questão 59

Questão
Viruses are unicellular
Responda
  • True
  • False

Questão 60

Questão
Protein synthesis occurs in the Influenza life cycle.
Responda
  • True
  • False

Questão 61

Questão
Acidophile
Responda
  • pH 5 or below
  • pH 6 - 8
  • pH 9+

Questão 62

Questão
What cannot grow in the presence of oxygen
Responda
  • Strict aerobe
  • Strict anaerobe
  • Facultative anaerobes
  • Aero-tolerent anaerobes
  • Micro-aerophile

Questão 63

Questão
What grows better in the presence of oxygen, but will grow without it?
Responda
  • Strict aerobe
  • Strict anaerobe
  • Facultative anaerobes
  • Aero-Tolerant anaerobes
  • Micro-aerophile

Questão 64

Questão
What depends on oxygen to grow
Responda
  • Strict aerobe
  • Strict anaerobe
  • Facultative anaerobes
  • Aero-Tolerant anaerobes
  • Micro-aerophile

Questão 65

Questão
Gram negative bacteria...... Which statement is wrong?
Responda
  • 10% of cell wall is peptidoglycan
  • Contains teichoic acid
  • No outer membrane
  • Does not retain crystal violet
  • High lipid/lipoprotein content

Questão 66

Questão
Gram postive bacteria.... Which answer is wrong?
Responda
  • 90% of cell wall is peptidoglycan
  • Contains teichoic
  • High lipid/lipoprotein content
  • Retains crystal violet
  • Has outer membrane

Questão 67

Questão
The function of bacteria capsule is to _________
Responda
  • 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.

Questão 68

Questão
The function of bacteria pilli is to _________
Responda
  • 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.

Questão 69

Questão
Bacterial life cycle is an asexual process
Responda
  • True
  • False

Questão 70

Questão
Lysozymes in tears kills ________.
Responda
  • Infection
  • Viruses
  • Moulds
  • Gram-positive bacteria
  • Gram-negative bacteria

Questão 71

Questão
Influenze virus is polyhedral
Responda
  • True
  • False

Questão 72

Questão
Adenovirus is polyhedral.
Responda
  • True
  • False

Questão 73

Questão
Bacteria from a pure culture which is used to start a new culture is called __________?
Responda
  • Spreading
  • Agar
  • Gram negative
  • Gram postive
  • Inoculum

Questão 74

Questão
Enveloped viruses are less sensitive to drying/heating conditions rather than naked capsid viruses.
Responda
  • True
  • False

Questão 75

Questão
The naked capsid virus is more hostile compared to the enveloped virus due to it breaking down the cell membrane through lysis.
Responda
  • True
  • False

Questão 76

Questão
In the virus life cycle, an active, intracellular stage is called the __________ stage.
Responda
  • Metabolic
  • Infectious
  • Log
  • Attachment
  • Biosynthesis

Questão 77

Questão
The area of no growth is what we call a ____________
Responda
  • Viral plaque
  • Complex
  • Plaque assay
  • Inoculum
  • Spec

Questão 78

Questão
Where would you find a prophage?
Responda
  • Virus life cycle
  • Lytic life cycle
  • Lysogenic life cycle
  • Bacterial life cycle
  • Food life cycle

Questão 79

Questão
Another word for lytic is [blank_start]virulent[blank_end]
Responda
  • virulent

Questão 80

Questão
Another word for lysogenic is [blank_start]temperate[blank_end].
Responda
  • temperate

Quer criar seus próprios Quizzes gratuitos com a GoConqr? Saiba mais.

Semelhante

Explore a Biblioteca