Question

6.

Which objective lens(es) should immersion oil never be in contact with to prevent damaging it(them)?
       100X
       40X
       10 X
       B and C
11. The high salt content in a mannitol salt agar plate helps to separate ___________ from ______________ and __________________ in a mixed sample.
       staphylococci; streptococci; enterococci
       streptococci; staphylococci; enterococci
       enterococci; streptococci; staphylococci
       Streptococcus pyogenes; Streptococcus agalactiae; Staphylococcus aureus

13. How do you determine the species of an unknown bacterium?
       You should make a careful investigation of the morphology of the bacterial cells using a microscope to make a firm identification.
       You need to quantify the number of bacteria in the same to determine the species.
       Identification can only be made based on the patient’s signs and symptoms.
       You use standard tests and pre-existing knowledge to classify the bacterium.

14. The purpose of fermentation is which of the following choices?
       To make ATP
       To make carbon molecule intermediates to feed into the electron transport chain
       To make NADH
       To make NAD+

Answer 1

So the answer is option A. site to pre moda staphylococcă; streptococca; enterococci une 13. To identify an unknown, bacteria, we must compare it to known taxa. So among the xol ophons the correct one is d) you use standard tests and preexisting wong knowledge to classify the bacterium don restoran be

14 The purpose of fermentation is to replenish the NADT supply for glycolysis It is the 1st step of anaerobic and aerobic respiration So answer is d) to make NADt.

Answer is both B &c Oil can ruin the lower power objectives. While switching between a day lox or 400 lens and a oil lens, care should be taken not to get out on 40x lens, because it may damage 100 x it of Nac. Mannitol salt agar contains high concentration so it is selective for growth of salt tolerant staphylo microbes that are cocci is halophile -