18. Bacterial endotoxin LPS is found in (a) the outer membrane (b) t
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Course
HBO Small Business en Ondernemerschap
Institution
HBO Small Business En Ondernemerschap
18. Bacterial endotoxin LPS is found in: (a) the outer membrane (b) the periplasmic space (c)
the enzymes (e) the muramic acid (d) the peptidoglycan 19. All Spirochaetes possess (a)
flagellaa (b) axial filaments 20. When both ends of a cell has one flagellum, this is called (a)
monotrichous (b) ...
18. Bacterial endotoxin LPS is found in: (a) the outer membrane (b) the periplasmic space (c)
the enzymes (e) the muramic acid (d) the peptidoglycan 19. All Spirochaetes possess (a)
flagellaa (b) axial filaments 20. When both ends of a cell has one flagellum, this is called (a)
monotrichous (b) lophotrichous (e) amphitrichous(d) peritrichous 21. Which are readily and
easily removed from a bacterial cell: (a) endospores (b) slime layers (e) axial filament (d)
mesosomes (e) capsules 22. Gram (-) bacteria finally stain with which color (a) pink (b) blue
(c)green (d) no color 23. The primary stain in the Acid Fast Stain is: (a) Crystal violet(b)
Safranin (d) Malachite green (e) Carbolfuschin (c) Methylene blue 24. Volutin, which has a
rainbow color, is associated with (a) chromatin (b) granules (c) plasmids (d) endospores (e)
chromatophores 25. The term used to describe Gram positive bacteria which have their cell wall
destroyed by (a) protoplasm (b) spheroplast (c) protoplast (d) plasmid (e) palisade 26. An
endospore chemically consists mainly of lysozyme or penecillin is a (b) Dipicolinic acid (e)
Nucleic acid (a) Mycolic acid (c) Muramic acid (d) Glucosamine 27. Plasmids are: (a) permanent
chromosomal DNA RNA protein (d) extra-chromosomal double-stranded DNA (e) temporary
ribosomal RNA 28 Bacteria reproduce by way of (a) binary fission (b) conjugation (c) plasmids
(d) germination (e) sporulation
Solution
Question: 18. Bacterial endotoxin LPS is found in:
Answer: (a) the outer membrane
Lipopolysaccharides (LPS) are found in the outer membrane of Gram-negative bacteria.
Question: 19. All Spirochaetes possess:
Answer: (b) axial filaments
Spirochetes have axial filaments or endoflagella that extends beyond the cell wall. These
filaments are found in periplasmic space of spirochetes. These filaments assists in motility, their
twisting motion cause Spirochetes to move forward in a corkscrew-like motion.
Question: 20. When both ends of a cell has one flagellum, this is called:
Answer: (C) Amphitrichous
Classification on the basis of the number and arrangement of flagella:
Monotrichous — a single flagellum at one end of the bacterial cell.
Lophotrichous — Two or more flagella at one end or both ends of the bacterial cell.
Amphitrichous — single flagellum at each end of the bacterial cell.
Petritrichous — Flagella surrounding the bacterial cell.
Question: 21. Which are readily and easily removed from a bacterial cell:
Answer: (b) slime layer
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