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1. In the classification of bacteria according to shape,which among the following refer to cuboidal arrangement of bacterial cells?
a. Tetrads
b. Staphylococci
c. Sarcinae
d. Streptococci
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Answer: (c).Sarcinae

2. Which group of bacteria among the following have the largest area of contact?
a. Palisades
b. Trichomes
c. Streptobacilli
d. Diplobacilli
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Answer: (b).Trichomes

3. Which among the following are “Spirochetes”?
a. Spirillum volutans
b. Corynebacterium diphtheriae
c. Streptomyces sp.
d. Treponema pallidum
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Answer: (d).Treponema pallidum

4. What is the approximate size of the bacterial cell?
a. 2mm in diameter
b. 1mm in diameter
c. 2 micrometer in diameter
d. 0.5 to 1.0 micrometer in diameter
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Answer: (d).0.5 to 1.0 micrometer in diameter

5. When rod shaped bacteria appears in pairs,it is known as?
a. Diplobacilli
b. Streptobacilli
c. Diplococci
d. Staphylococci
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Answer: (a).Diplobacilli

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