Question

67. 0.005% triphenyltetrazolium chloride (TTC) TTC can be utilized by bacterias electron acceptor and in its reduced form turns red. A. TRUE B. FALSE 68. Staphylococcus sp. is arranged as chains and is rod shaped A. TRUE B. FALSE 69. Phylum Cyanobacteria contains genera Anabaena which utilizes heterocysts for nitrogen-fixation A. TRUE B. FALSE 70. Wasserblüthe is a German word meaning 'water fall" A. TRUE B. FALSE 71. Phylum Chlamydiae is unique among bacteria in that its members have an abundance of peptidoglycan in their cell walls A. TRUE B. FALSE 72. Phylum Chlamydiae bacteria do not have genes for production of peptidoglycan. A. TRUE B. FALSE 73. Chlamydiae has the most genera > 300) of any other bacterial phylum A. TRUE B. FALSE 74. Proteobacteria contains five key genera: Escherichia, Pseudomonas, Rhizobium, Salmonella, and Spirillum. A. TRUE B. FALSE 75. Within each of the domains, a hierarchical taxonomic system places similar species into the same kingdom A. TRUE B. FALSE 76. Within each of the domains, a hierarchical taxonomic system places similar similar genera into the same family A. TRUE B. FALSE 77. Within each of the domains, a hierarchical taxonomic system places similar similar families into the same order

Answer 1

67, true

0.005% TTC is used as a terminal electron acceptor and an indicator in the motility medium in which the presence of bacteria is indicated by vibrant red colour. Reduced TTC becomes red in colour

68, false

Staphylococcus- coccus means round shaped and it is arranged in clusters like grapes.

69, true.

Heterocyst converts nitrogen into ammonia.it is present in filamentous cyanobacteria like Anabeana, Nostoc, etc.

70, false

wasserbluthe means water bloom. It is the growth of planktons densely in the aquatic environment due to abundant nutrients.

71, false

Chlamydia has a rigid cell wall like Gram negative bacteria, do not have peptidoglycan in the cell wall.

72, false

Studies reveal that Chlamydiae has genes for peptidoglycan synthesis. But its still a debate

73, false

Chlamydiae has only one class Chlamydia which consists of three important species.