Chapter 3 Quiz Review Flashcards
The two functions of bacterial appendages are__.
A.) attachment and protection B.) attachment and motility C.) motility and slime production D.) energy reactions and synthesis E.) protection and motility
B.) attachment and motility
Which structure protects bacteria from being phagocytized by white blood cells?
A.) slime layer B.) fimbriae C.) cell membrane D.) capsule E.) all of the choices are correct
D.) capsule
The outcome of the Gram stain is based on differences in the cell’s__
A.) flagella B.) ribosomes C.) inclusions D.) wall E.) membrane
D.) wall
Which order below reflects the correct order procedure for gram staining?
A.) alcohol - crystal violet - safranin - iodine
B.) crystal violet - alcohol - iodine - safranin
C.) crystal violet - iodine - alcohol - safranin
D.) iodine - safranin - crystal violet - alcohol
E.) alcohol - safranin - crystal violet - iodine
C.) crystal violet - iodine - alcohol - safranin
Peptidoglycan is a unique macromolecule found in bacterial__
A.) cell walls B.) cell membranes C.) capsules D.) slime layers E.) inclusions
A.) cell walls
The __ stain is used to stain and differentiate Mycobacterium and Nocardia from other bacteria
A.) acid-fast B.) methylene blue C.) Gram D.) negative E.) basic
A.) acid-fast
All bacterial cells have __
A.) one or more chromosomes B.) one or more fimbriae C.) the ability to produce endospores D.) capsules E.) flagella
A.) one or more chromosomes
The function of bacterial endospores is __
A.) to convert gaseous nitrogen to a usable form for plants
B.) reproduction and growth
C.) protection of genetic material during harsh conditions
D.) storage of excess cell materials
E.) to act as sites for photosynthesis
C.) protection of genetic material during harsh conditions
Which term is not used the describe bacterial cell shapes?
A.) coccus B.) tetrad C.) vibrio D.) rod E.) spirochete
B.) tetrad
tetrad refers to the arrangement of cells! arrangement describes how cells remain attached after they divide.
Which of the following species of bacteria is not closely related to the others?
A.) staphylococcus aureus B.) staphylococcus epidermis C.) staphylococcus saprophyticus D.) Escherichia coli E.) staphylococcus capitis
D.) Escherichia coli
Lipopolysaccharide is an important cell envelope componenet of __
A.) gram-negative bacteria B.) gram-positive bacteria C.) acid-fast bacteria D.) mycoplasma E.) protoplasts
A.) gram-negative bacteria
Which statement below supports the argument that gram-negative cell are structurally weaker than gram-positive cells?
A.) gram-negative cells contain lipopolysaccharides, the lipid component of which acts as an endotoxin.
B.) gram-positive cells contain theichoic acids, whereas gram-negative cells lack theichoic acids in their cell wall.
C.) gram-negative cells have a thinner layer of peptidoglycan in their cell wall compared to gram-positive cells.
D.) the envelope of gram-negative cells comprises a hydrophobic outer membrane.
C.) gram-negative cells have a thinner layer of peptidoglycan in their cell wall compared to gram-positive cells.
All of the statements are true but which one means that gram-negative cell wall structure is weaker?
Which of the following is found in eukaryotic cells but not in the cells of bacteria?
A.) nucleus
B.) mitochondria
C.) endoplasmic reticulum
D.) lysosomes
A.) nucleus
Chitin is a chemical component of the cell walls of __.
A.) protozoa
B.) algae
C.) fungi
D.) bacteria
C.) fungi
During unfavorable growth conditions, many protozoa can convert to a resistant, dormant stage called a(n) __.
A.) endospore B.) cyst C.) seed D.) trophozoite E.) sporozoa
B.) cyst
