Bio 2010 - Microbiology » Summer 2021 » Chapter 3 Quiz (A)

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Question #1
Which of the following is not true about capsules and slime layers?
A.   they help bacteria resist phagocytosis by macrophages
B.   they are required for all bacteria to grow normally in culture
C.   they consist of secreted material lying outside of the bacterial cell wall
D.   they can prevent desiccation of bacteria cells
Question #2
Fimbriae:
A.   sense changes in nutrient concentration
B.   are pathways for the secretion of exoenzymes
C.   cause bacteria move through fluids
D.   attach bacteria to various surfaces
Question #3
Which of the following is NOT found in bacteria?
A.   membrane bound nucleus
B.   ribosome
C.   plasma membrane
D.   cell wall
Question #4
While viewing the soil sample under the microscope you will notice a rod- shaped cell devoid of a nucleus. The only correct assumption that can be made of the cell thus far is that:
A.   it contains some peptidoglycan
B.   it is gram positive
C.   it is part of a multicellular microorganisms
D.   it contains mitochondria
E.   it is a eukaryote
Question #5
The reason that bacterial cells are more resistant to osmotic shock than are eukaryotic cells is that they:
A.   contain a cell wall composed of cellulose
B.   contain a cell wall composed of peptidoglycan
C.   actively block water molecules from entering the cell
D.   are selectively permeable
Question #6
Brushing teeth is important to biofilm prevention. What specific bacterial structure does brushing teeth address?
A.   capsules
B.   flagella
C.   endospores
D.   fimbriae
Question #7
The use of the antibiotics that inhibit or inactivate cellular ribosomes will result directly in the loss of which of the following functions:
A.   cell division
B.   phagocytosis
C.   protein synthesis
D.   DNA replication
E.   ATP production
Question #8
Plasmids are important to the genetics of many bacteria. This is because:
A.   they are inherited from one generation to the next
B.   they are inherited from one generation to the next, they may carry genes that give their host a selective advantage, and they can render bacteria drug-resistant
C.   they are inherited from one generation to the next and they may carry genes that give their host a selective advantage
Question #9
A bacillus bacterium with a single flagellum at each end is described as:
A.   monotrichous
B.   amphitrichous
C.   lophotrichous
D.   peritrichous
Question #10
What is the purpose of bacterial endospores?
A.   help the bacterium to differentiate into faster growing stages of bacteria
B.   allow the bacterium to survive the absence of oxygen
C.   allow the bacterium to make hundreds of "seeds" to spread on the wind
D.   allow the bacterium to survive extended periods without nutrients

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