MICROBIOLOGY LAB PRACTICAL LATEST
EXAM 2025 WITH MULTIPLE CHOICE OF
QUESTIONS AND DETAILED CORRECT
ANSWERS ALREADY GRADED A+ AND 100%
GUARANTEE PASS (BRAND NEW!!!!!)
If you do not flame the loop, you will end up with to much
bacteria. - CORRECT ANSWER-Why must you flame the loop between
each streak when performing the streak plate technique?
Chromogenesis is the process where different species will
produce different colors. It is used to distinguish between the
culture you are looking for and the contaminants. - CORRECT
ANSWER-What is chromogenesis and how can it be used to
distinguish purity of a culture?
Quadrant 4 has less competition than the previous three
quadrants. - CORRECT ANSWER-You streak a culture and find that
the colonies in quadrant 4 are larger in diameter than the
colonies in quadrant 2. Why might this be?
Yes, you can inoculate a certain colony of bacteria, therefore
isolating it from the other colonies. You can do this by
distinguishing between the pure cultures by looking for certain
characteristics. - CORRECT ANSWER-Can a pure culture containing a
single type of microbe be prepared from a culture with a
mixture of cells? how?
, You can determine a pure culture by observing and looking for
specific characteristics of said culture. - CORRECT ANSWER-How can
you determine whether a culture that you have been provided
with is a "pure" culture?
Blue Bell Lystiria scare. - CORRECT ANSWER-Give an example of a
real world situation where knowing how to perform a streak
plate technique properly would be important.
Lowest power is easiest to focus. Highest power is the most
difficult to focus. - CORRECT ANSWER-At which magnification is it
easiest to focus? which is most difficult?
The condenser allows one to modify the brightness. The
brightness in turn makes specimens easier to see. - CORRECT
ANSWER-What does the condenser (in combination with the iris
diaphragm) allow you to do? How does it allow you to modify
your image?
40X - CORRECT ANSWER-You are using the 4X objective lens, what is
your total magnification?
The diameter of the lens decreases with higher magnification.
The brightness gets dimmer because of the minute amount of
light passing through and the length of the lens from the slide
decreases because of high magnification. - CORRECT ANSWER-As
magnification increases, what happens to the length and
diameter of the objective lens and how does it affect the
brightness of the image?
EXAM 2025 WITH MULTIPLE CHOICE OF
QUESTIONS AND DETAILED CORRECT
ANSWERS ALREADY GRADED A+ AND 100%
GUARANTEE PASS (BRAND NEW!!!!!)
If you do not flame the loop, you will end up with to much
bacteria. - CORRECT ANSWER-Why must you flame the loop between
each streak when performing the streak plate technique?
Chromogenesis is the process where different species will
produce different colors. It is used to distinguish between the
culture you are looking for and the contaminants. - CORRECT
ANSWER-What is chromogenesis and how can it be used to
distinguish purity of a culture?
Quadrant 4 has less competition than the previous three
quadrants. - CORRECT ANSWER-You streak a culture and find that
the colonies in quadrant 4 are larger in diameter than the
colonies in quadrant 2. Why might this be?
Yes, you can inoculate a certain colony of bacteria, therefore
isolating it from the other colonies. You can do this by
distinguishing between the pure cultures by looking for certain
characteristics. - CORRECT ANSWER-Can a pure culture containing a
single type of microbe be prepared from a culture with a
mixture of cells? how?
, You can determine a pure culture by observing and looking for
specific characteristics of said culture. - CORRECT ANSWER-How can
you determine whether a culture that you have been provided
with is a "pure" culture?
Blue Bell Lystiria scare. - CORRECT ANSWER-Give an example of a
real world situation where knowing how to perform a streak
plate technique properly would be important.
Lowest power is easiest to focus. Highest power is the most
difficult to focus. - CORRECT ANSWER-At which magnification is it
easiest to focus? which is most difficult?
The condenser allows one to modify the brightness. The
brightness in turn makes specimens easier to see. - CORRECT
ANSWER-What does the condenser (in combination with the iris
diaphragm) allow you to do? How does it allow you to modify
your image?
40X - CORRECT ANSWER-You are using the 4X objective lens, what is
your total magnification?
The diameter of the lens decreases with higher magnification.
The brightness gets dimmer because of the minute amount of
light passing through and the length of the lens from the slide
decreases because of high magnification. - CORRECT ANSWER-As
magnification increases, what happens to the length and
diameter of the objective lens and how does it affect the
brightness of the image?
