Given a log phase bacterial culture with 2 times 10^5 per ml and a generation ti

Question

Given a log phase bacterial culture with 2 times 10^5 per ml and a generation time of 20 minutes, how long does it take the culture to reach a density of 1.28 times 10^7 per ml? a. 2 hours b. 4 hours c. 3 hours d. 1 hours Microorganisms are most nearly uniform in terms of chemical and physiological properties a death during____phase. a. death(decline) b. lag c. log (exponential) d. stationary ___is considered a differential staining procedure? a. Grain strain b. Acid-fast stain c. Both Gram stain and Acid-fast stain d. Leifson's flagella stain In Gram staining, after the primary stain has been added, the decolorizer has been used, and the counter-stain been used, gram-positive organisms are stained____#129____and gram counter-stain negative has been used, gram-positive organisms are stained___#29___and gram negative organisms are stained ____#30 ____. a. purple b. pink c. colorless d. none of the above A 40 times objective and a 10 times ocular produce a total magnification of___. a. 40X b. 400X c. 1400X d. 450X In the Gram-staining procedure, the mordant is a. Crystal violet b. Iodine c. Alcohol d. Safranin e. Carolfuchsin

Explanation / Answer

26-1st(2Hour)

27-3rd(log-expo)

28- 3rd (Both Gram And ZN)

29-1st(Purple)G+ve

30-2nd(pink)G-ve

31-2nd (400x)

32-2nd(Iodine)

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