Lecture Quiz 2 Flashcards
Bacterial cell walls are primarily composed of which of the following?
A. carbohydrate
B. protein
C. peptidoglycan
D. phospholipid
C. peptidoglycan
If bacteria living in salty seawater were displaced to a freshwater environment, the cell structure that would prevent cells from rupturing is
A. cell membrane
B. capsule
C. slime layer
D. cell wall
E. endospore
D. cell wall
the bacterial chromosome
A. is located in the cell membrane
B. is part of the nucleoid
C. forms a single linear strand of DNA
D. contains all the cell’s plasmids
E. all of these choices are correct
B. is part of the nucleoid
the function of bacterial endospores is
A. the storage of excess cell materials
B. for the protection of genetic material during harsh conditions
C. the have sites for photosynthesis
D. for reproduction and growth
E. to convert gaseous nitrogen to a usable form of plants
B. for the protection of genetic material during harsh conditions
The process of endospore formation is ___, while the process of an endospore growing into a vegetative cell is ___
A. germination; reproduction
B. germination; sporulation
C. sporulation; germination
D. reproduction; sporulation
C. sporulation; germination
the short, numerous appendages used by some bacterial cells for adhering to surfaces are called
A. sex pili
B. cilia
C. fimbriae
D. periplasmic flagella
E. flagella
C. fimbriae
the term that refers to the presence of flagella all over the cell surface is
A. monotrichous
B. atrichous
C. lophotrichous
D. amphitrichous
E. peritrichous
E. peritrichous
the transfer of genes during bacterial conjugation involves rigid, tubular appendages called
A. flagella
B. fimbriae
C. cilia
D. periplasmic flagella
E. sex pili
E. sex pili
What unit of measure is most appropriate for expressing size of a bacteria?
A. nanometer
B. millimeter
C. picometer
D. micrometer
D. micrometer
When a rod-shaped bacteria is short and plump, it is called a
A. coccobacillus
B. spirochete
C. spirillum
D. vibrio
E. pleomorphism
A. coccobacillus
which of the following cell wall components is unique to gram-negative cells?
A. mycolic acid
B. teichoic acid
C. peptidoglycan
D. lipopolysaccharide
A. mycolic acid
Which of the following developed a set of postulates for determining whether a particular disease is caused by a particular pathogen?
A. Louis Pasteur
B. Joseph Lister
C. Robert Koch
D. John Snow
C. Robert Koch
Which of the following experimented with raw meat, maggots, and flies in an attempt to disprove the theory of spontaneous generation?
A. Aristotle
B. Lazzaro Spallanzani
C. Francesco Redi
D. Antonie van Leeuwenhoek
C. Francesco Redi
Which of the following individuals is credited for definitively refuting the theory of spontaneous generation using broth in swan-neck flasks?
A. Louis Pasteur
B. John Needham
C. Aristotle
D. Jan Baptista van Helmont
A. Louis Pasteur
Which of the following terms refers to a prokaryotic cell that is comma shaped?
A. coccus
B. vibrio
C. spirillum
D. coccobacilli
B. vibrio
