Microbiology Answers

what is transcription and translation in a cell

please what is the function of an HPO microscope?

1. how can i describe the appearance of the microorganisms under study
2. why is microorganisms necessary in microorganisms?
3. what is total magnification? and how is total magnification of each objective determined?
4. why do we use the fine adjustment knob instead of the coarse adjustment knob when the microscope is set on HPO or OIO [microscope]

A strain suspension in a turbidity test (spectrophotometer) gave 0.2 . I diluted it to 0.1 equivalent to 10*7 cfu/ml. From this diluted suspension I need to inoculate the two fold dilution tubes with 100 micro liter. However if I add the 10*7 cfu/ml to a 200 micro liter of the antibacterial stock in tube (40 well plates) i may change the strains density, right? if so, shall I take a percentage from the inoculum suspension and how much?? how do i calculate this?

What results would you expect to see in the oxidative and fermentative test(Hugh and Leifson) for a Bacillus species.

I am doing a presentation on Vibrio fischeri. I get it for the most part, but there are a few things I dont get. Like is the Lux-I and Lux-R proteins present in V. fischeri from "birth" or does it acquire them from the nutrients the squid delivers to it? Also, What exactly does the nutrients given by the squid do to the V. fischeri to make it want to release the AHL? Thanks

Photobacterium phosphoreum would have a symbiotic relationship with algae because?