Bissoy.com
Doctors Medicines MCQs Q&A

Related Questions

Bacillus subtilis under ideal conditions occupies 5% of the total volume of a fermenter. Under such conditions; the culture medium (after bacilli are filtered off) has a concentration of 1mg/ml of the secreted protein trehalae
(i) Calculate the volume of culture filtrate required to purify 1 kg of trehalase
(ii) What are the total number of B. subtilis cells which produce this amount of enzyme? Assume that each cell is a cylinder which has dimensions of 1 m diameter and length 2μm.
Which of the following events occur during the stationary phase of bacterial growth?
P. Rise in cell number stops.
Q. Spore formation in some Gram-positive bacteria such as Bacillus subtilis.
R. Cell size increases in some Gram-negative bacteria such as Escherichia coli.
S. Growth rate of bacterial cells nearly equals their death rate.
T. Decrease in peptidoglycan cross-linking.
A bacteria gives birth to two new bacteria in each second and the life span of each bacteria is 5 seconds. The process of the reproduction is continuous until the death of the bacteria. initially there is one newly born bacteria at time t = 0, the find the total number of live bacteria just after 10 seconds :
Which of the following statements regarding the mechanism of transformation in Bacillus subtilis is false?
Which is the primary sigma factor in Bacillus subtilis?
Loosening the binding between polymerase and non-specific site is important to confer higher specificity. In Bacillus subtilis what is responsible for this action?
Which operon behaves similar to Bacillus subtilis trp operon in terms of attenuation?
Bacillus subtilis is recognized as safe by the FDA.
In case of Bacillus subtilis, the filaments are embedded in a mass of mucilage which forms a scum on the surface of water. It is called the
Essentially in an experiment involving bacteria, we measure Optical density of the media where the bacteria grow at different time point from the same flask. If we have 2 or more types of bacteria and want to investigate whether the growth curve of those bacteria are significantly different, what do you think the best analysis can be applied for this purpose?