Question

True or false?

6) In order to produce amino acids for commercial purposes, open batch cultures of bacteria must be kept an early log or exponential phase. 7) Agar is better than gelatin temperatures of 35C, whereas gelatin begins to melt at 50C. solidifying agent for media because agar remains solid up to as a 8) Bacteria found in biofilms are encased in layers of sticky polysaccharide, making it difficult for antibiotics and disinfectants to reach the organisms. 9) Changing the growth conditions of a bacterial population does not change its generation time because bacteria continue to divide by binary fission, and the generation time is not affected by external conditions.

Answer 1

Answer 6) In order to produce amino acids for commercial purposes, open batch cultures of bacteria must be kept an early log or exponential phase- False.

Answer 7) Agar is better than gelatin as a solidifying agent for media because agar remains solid up to temperatures of 35C, whereas gelatin begins to melt at 50C- True.

Answer 8) Bacteria found in biofilms are encased in layers of sticky polysaccharide, making it difficult for antibiotics and disinfectants to reach the organisms- True.

Answer 9) Changing the growth conditions of a bacterial population does not change its generation time because bacteria continue to divide by binary fission, and the generation time is not affected by external conditions- False.