10 Jun A differential stain for organisms that are not decolorized
estion
1. A differential stain for organisms that are not decolorized in alcohol, such as the bacteria that cause Hansen’s Disease (leprosy) and tuberculosis.
Flagellar stain
Schaeffer-Fulton spore stain
Gram Stain
Ziehl-Neelsen acid-fast stain
Cationic dye (also called basic dye)
2. A differential stain that uses crystal violet, iodine, alcohol, and safranin to differentiate bacteria. Positive bacteria stain dark purple or blue; negative one’s stain pink or red.
Differential stain
Simple Stain
Gram stain
Negative stain
Schaeffer-Fulton spore stain
3. The presence of a capsule around bacterial cells usually indicates their increased disease-causing potential and resistance to disinfection. Capsules are generally viewed by ________
spore staining.
scanning electron microscopy.
Gram staining
Negative stain
4. Fluorescent microscopes use visible (V) light source and flurochromes as stains.
True
False
5. Which microscope is used to view internal structures of unstained, living cells?
Scanning electron microscope
Dark-field microscopy
Transmission electron microscope
Phase contrast microscopy
Bright-field microscopy
Fluorescent Microscope
6. A stain that allows visualization of endospores.
Differential stain
Flagellar stain
Gram stain
Negative stain
Schaeffer-Fulton spore stain
Simple stain
Ziehl-Neelsen acid-fast stain
Cationic dye (also called basic dye)
7. The Compound light microscope can be used to observe:
Ribosomes, bacteria, viruses and red blood cells.
Yeast, amino acids, bacteria and red blood cells
Red blood cells, bacteria and viruses
Cell organelles, bacteria and red blood cells
Proteins, viruses, atoms and bacteria
Bacteria, red blood cells and amino acids
8. A stain that shows sizes, shapes, and arrangement of cells.
Differential stain
Flagellar stain
Gram stain
Negative stain
Schaeffer-Fulton spore stain
Simple stain
Ziehl-Neelsen acid-fast stain
Cationic dye (also called basic dye)
9. Which microscope uses electron beams and electromagnetic lenses to view internal and external structures/surfaces of cells?
Scanning electron microscope
Dark-field microscopy
Transmission electron microscope
Phase contrast microscopy
Bright-field microscopy
Fluorescent Microscope
10. Which microscope is used to view dead stained organisms?
Scanning electron microscope
Dark-field microscopy
Transmission electron microscope
Phase contrast microscopy
Bright-field microscopy
Fluorescent Microscope
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