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28 questions
All answers listed below are true about bacteria except
all are prokaryotes
all are harmful
all are unicellular
they do not have nucleus
What material is found in most bacterial cell walls?
Cellulose
Chitin
Peptidoglycan
Amylose
A rod-shaped bacteria is called
spiral
bacillus
coccus
vibrio
Which of the following statements are TRUE about organisms in the Domain Bacteria?
Consist of bacteria and cyanobacteria
Cell wall composed of chitin
Genetic material is a single stranded DNA
Membrane-bounded organelles are present
Based on cell shape, bacteria can be classified into these group EXCEPT
coccus
bacillus
hexagon
spiral
State the types of bacterial shapes shown above
coccus
coccoon
bacillus
rod
Which type of bacterial cell shape shown above?
spherical
spiral
twisted
spring
Escherichia coli is an example of Domain...
Bacteria
Archaea
Eukarya
Prokarya
Which of these is the example for Domain Archaea?
Sulfolobus sp.
Escherichia coli
Bacillus sp.
Salmonella sp.
Which of the following statements show characteristics of Archaebacteria?
I. The cell walls do not contain peptidoglycan.
II. There are no membrane-enclosed organelles within their cytoplasm.
III. Their DNA consist of histone proteins.
IV. Their membrane lipid has unbranched hydrocarbon chain.
I, II and III
II, III and IV
I, II and IV
I, III and IV
Which compound in the cell wall that causes a Gram positive bacteria stain purple in colour when it is treated with crystal violet dye?
Cellulose
Lipoprotein
Peptidoglycan
Lipopolysaccharide
Which of the following statements are TRUE about organisms in the Domain Bacteria?
I. Consist of bacteria and cyanobacteria
II. Some are photoautotrophs
III. Genetic material is a single stranded DNA
IV. Organelles are not present
I and II
I, II and III
I, II and IV
I, II, III and IV
The Gram-positive bacteria stain purple because
they form endospore
they have cellulose layer
they have thin peptidoglycan layer
they have thick peptidoglycan layer
Bacteria and Archaebacteria are both prokaryotes. How do they differ to each other?
Bacteria inhabit extreme environment while Archaebacteria inhabit diverse environment.
Bacteria inhabit diverse environment while Archaebacteria inhabit extreme environment.
Both inhabit diverse environment.
Both inhabit extreme environment.
Prokaryotes are differentiated from eukaryotes by
lacking of true nucleus and cytoskeleton
lacking of membrane bounded organelle
the flagella do not show 9+2 microtubule arrangement
All choices are true.
Which domain has cell wall containing peptidoglycan?
Bacteria
Archaea
Eukarya
Which domain has nucleus?
Bacteria
Archaea
Eukarya
Which domain has membrane lipid with branched hydrocarbon chain bonded to glycerol by ether linkage.
Bacteria
Archaea
Eukarya
Which domain has DNA with no histone proteins?
Bacteria
Archaea
Eukarya
Which bacteria has complex cell wall?
Gram positive bacteria
Gram negative bacteria
Which bacteria has lipopolysaccharide?
Gram positive bacteria
Gram negative bacteria
Which bacteria are more virulent?
Gram positive bacteria
Gram negative bacteria
Which bacteria will stain blue or purple?
Gram positive bacteria
Gram negative bacteria
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