Week 1 Chapter 3
Discoloration Lab Test
SCI250 Week 1 Chapter 3 Staining Lab Quiz (6. 7 factors each) Check or underline the correct answer
Section: Multiple Choice
1 . Which in turn of the following stains is utilized frequently to identify Mycobacterium and also other bacteria in whose cell walls contain substantial amounts of fats? Gram discoloration
installment payments on your Which in the following staining is used to classify microorganisms based on their cell wall articles? Capsular discolor
several. In the Gram stain, Gram-positive bacteria discolor with a _________ color because of the incorporation of the _________ absorb dyes into their cell wall. purple, safranin
magenta, crystal violet
crimson, crystal purple
5. What is the function of the mordant iodine in a Gram staining procedure? A mordant causes the crystal purple to run.
A mordant treatments the bacteria to the glide.
A mordant maintains dye mounted on an object.
Each of the above
five. What is the order of reagents found in the Gram stain?
ravenscroft violet, iodine, safranin, alcoholic beverages
alcohol, crystal violet, iodine, safranin
iodine, very violet, safranin, alcohol
amazingly violet, iodine, alcohol, safranin
crystal violet, safranin, liquor, iodine
six. The presence of a capsule around bacterial skin cells usually indicates their increased disease-causing potential and capacity disinfection. Capsules are generally viewed by ________ spore staining.
scanning electron microscopy.
Section: True or False
several. Fluorescent microscopes use an ultraviolet light source and fluorochromes while stains. Authentic
almost eight. Older, real cultures of Gram-positive creatures can show up red when Gram tarnished. True
9. Which usually microscope is utilized to view inner structures of unstained, living cells? Deciphering electron microscopic lense