Question

12.Spherical bacteria ocurring in cuboidal arrangement of cells are called a. staphylococci b. sarcinae c. streptococci d. Monococci

13. Extra-chromosomal circular DNA molecules present in bacterial cells are called d. nucleoid c. plasmids b. exons a. introns

14. Bacterial ribosomes are c. 80 S d. 705 b. 90 S a. 100 S

15. Which of the following two stains are used in Gram staining of bacteria a. crystal violet and iodine b. crystal violet and bromine C. crystal violet and safranin d. safranin and iodine

16. During the nitrification process, conversion of ammonia to nitrite is carried out by a. Nitrosomonas b. Nitrobacter c. Pseudomonas d. Beggiatoa​

Answer 1

Answer:

Staphylococci

Plasmids

80 S

Crystal violet and cotton blue.

Nitrosomonas

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