Blog

An organism, like Coronavirus, that spreads easily between individuals and can cause serious disease would be in which category?

When using the microscope to view bacteria when moving from the 40X objective to the 100X objective.  In addition to adding oil, it is important to remember to:

After inoculation and incubation, if a culture will be stored short-term such as over a weekend before the next class, it will be placed:

You are performing a streak plate.  1-You flame the loop red hot. 2-As the loop cools, you open the culture tube, flame the top of the tube, and use the loop to obtain bacteria.   3- You flame the culture tube, cap it and set it aside. 4- You streak the first section of the agar plate, do a quarter turn, continue to streak and repeat the quarter turn and streak two more times. 5- You put the lid on the plate, flame the loop and set it aside. What is wrong with the procedure above and what is the likely outcome?  

You perform an Endospore stain and you observe green ovals, red bacilli, and some structures that are green ovals within the red bacilli.  Which of the statements describe what you observe correctly?  (choose all that apply)

You Gram stain a pure culture but see both pink and purple bacilli.  Which of the following are possible explanations.  Choose all that apply.

The morphology of the cells below is [1] and the arrangement is best described as [2].

Which of the following is a safety rule of the lab? (choose all that apply)

You are performing a streak plate.  1-You flame the loop red hot. 2-As the loop cools, you open the culture tube, flame the top of the tube and use the loop to obtain bacteria.   3- You flame the culture tube, cap it and set it aside. 4- You flame the loop again then streak the first section of the agar plate,. 5- You flame the loop, turn the plate and continue the streak. 6- You repeat step 6 two more times. 7-You put the lid on the plate, flame the loop and set it aside. What is wrong with the procedure above and what is the likely outcome?

The morphology of the cells below is [1] and the arrangement is [2]