The archaebacterium Halobacterium, an extreme halophile, and Sulfolobus, a thermoacidophile, can be cultured in the presence of antibiotics such as streptomycin and chloramphenicol because they contain 80S, as opposed to 70S, ribosomes they contain ether-linked isoprenoids in their plasma membrane All of these they lack murein in their cell wall TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not an indirect method for the measurement of cell mass? Cell dry weight Nutrient composition Heat evolution Viscosity TRUE ANSWER : ? YOUR ANSWER : ?
Balanced growth is defined as balancing the growth while controlling the temperature balancing the growth while controlling the pH balancing the growth while changing the nutrient composition cultures undergoing balanced growth while maintaining a constant chemical composition TRUE ANSWER : ? YOUR ANSWER : ?
The isolation of the gonorrhoea - causing organisms, Neisseria gonorrhoeae,from a clinical specimen is facilitated by the use of media containing succinate none of these certain antibiotics cellulose TRUE ANSWER : ? YOUR ANSWER : ?
Anchorage -dependent cells require either (a) or (b) wettable surface for growth nothing to do with the surface dry surface for growth TRUE ANSWER : ? YOUR ANSWER : ?
Thiobacillus thiooxidans has an optimum pH of 9.0-9.5 6.5-7.5 0.5-6.0 2.0-3.5 TRUE ANSWER : ? YOUR ANSWER : ?
Callus cultures are amorphous cell aggregates arising from the unorganized growth of explants on an liquid medium aseptic solid nutrient medium solid nutrient medium solid or liquid medium TRUE ANSWER : ? YOUR ANSWER : ?
Semi-solid media, prepared with agar at concentrations of 0.5% or less are useful for the cultivation of all of these E.coli Microaerophillic bacteria Lactobacilli TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is the necessary step for cultivating the microorganisms? Preparing a culture medium for the growth of microorganisms All of these Sterilizing in order to eliminate all living microorganisms in vessel Inoculating the microorganisms in the prepared medium TRUE ANSWER : ? YOUR ANSWER : ?
Suspension cultures consist of cells and cell aggregates, growing dispersed in none of these liquid medium solid nutrient medium solid or liquid medium TRUE ANSWER : ? YOUR ANSWER : ?