Medical Quiz

Systematic Bacteriology Quiz


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Based on the sequences given, which is the most related to the bacteria X?

Bacteria X: GGC ACG TTA ATT GGC

bacteria A: GGC ATT CCG ATT GGC

bacteria B : GTC ACG TCC AGG CCA

bacteria C: GGC TCG TTA ATT GGC

bacteria D: GGC ACG TTA ATT TTA

A. A

B. B

C. C

D. D


In an approach called _______ taxonomy, relatedness is determined by a wide range of phenotypic and genotypic information

A. Polytypic

B. Polygenetic

C. Polyphasic

D. Polyphenetic


Which of the following method can best reveal the evolutionary phylogenetic relationship?

A. 16S rRNA sequencing

B. Morphology

C. Biochemical reaction

D. Gram staining


Which of the following is NOT a characteristic of the phylum Proteobacteria?

A. the phylum contains 5 classes

B. they are the largest group of bacteria

C. they are all Gram negative

D. Staphylococcus is in this phylum


What is the common ancestor of letters A, B, C, D and E?

A. 1

B. 2

C. 3

D. 4


Photosynthetic, nitrogen fixing, similar to chloroplasts. Which phylum belongs to these characteristics?

A. Proteobacteria

B. Cyanobacteria

C. Actinobacteria

D. Fermicutes


_______ is an evolutionary tree or a branching diagram or tree showing the “inferred” evolutionary relationship among various biological species or other entities

A. Line graph

B. Cladistic

C. Phylogenetic


E. coli belongs to which class of phylum Proteobacteria?

A. Gammaproteobacteria

B. Alphaproteobacteria

C. Betaproteobacteria

D. Deltaproteobacteria


Microorganisms do not generally reproduce sexually, therefore species are usually defined by phenotypic and genotypic characterisation

A. TRUE

B. FALSE


Usually Gram-positive, high GC, make antibiotics. These characteristics refer to which phylum?

A. Actinobacteria

B. Fermicutes

C. Proteobacteria

D. Bacteroidetes


Members of the phylum ________________, formerly known as the green nonsulphur bacteria, have primarily been associated with extreme habitats such as hot springs, and hypersaline environments where they are known as (filamentous) anoxygenic photothophs

A. Bacteroidetes

B. Chloroflexi

C. Cyanobacteria

D. Proteobacteria


Which bacterial phylum belongs to ‘low G+C Gram positive’ bacteria?

A. Proteobacteria

B. Fermicutes

C. Actinobacteria

D. Cyanobacteria


What is the common ancestor of C and D?

A. 1

B. 2

C. 3

D. 4


Which is the correct order of making phylogenetic tree?

A. sequencing –> alignment –> amplification –> tree construction

B. tree construction –> sequencing –> alignment –> amplification

C. amplification –> sequencing–> alignment –> tree construction

D. amplification –> alignment –> sequencing –> tree construction


Gram-negative, spiral shaped, flagellated. These characteristics belong to which phylum?

A. Cyanobacteria

B. Proteobacteria

C. Actinobacteria

D. Spirochaetes




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