Bio 2010 - Microbiology » Summer 2022 » Chapter 3 Quiz

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Question #1
Which of the following is NOT found in bacteria?
A.   cell wall
B.   ribosome
C.   plasma membrane
D.   membrane bound nucleus
Question #2
Plasmids are important to the genetics of many bacteria. This is because:
A.   they may carry genes that give their host a selective advantage
B.   they are inherited from one generation to the next
C.   all of these
D.   they can render bacteria drug-resistant
Question #3
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 can prevent desiccation of bacteria cells
D.   they consist of secreted material lying outside of the bacterial cell wall
Question #4
Fimbriae:
A.   sense changes in nutrient concentration
B.   cause bacteria move through fluids
C.   are pathways for the secretion of exoenzymes
D.   attach bacteria to various surfaces
Question #5
A bacillus bacterium with a single flagellum at each end is described as:
A.   amphitrichous
B.   monotrichous
C.   lophotrichous
D.   peritrichous
Question #6
What is the purpose of bacterial endospores?
A.   allow the bacterium to survive the absence of oxygen
B.   allow the bacterium to survive extended periods without nutrients
C.   allow the bacterium to make hundreds of "seeds" to spread on the wind
D.   help the bacterium to differentiate into faster growing stages of bacteria
Question #7
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 is gram positive
B.   it contains some peptidoglycan
C.   it is part of a multicellular microorganisms
D.   it contains mitochondria
E.   it is a eukaryote
Question #8
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.   are selectively permeable
C.   actively block water molecules from entering the cell
D.   contain a cell wall composed of peptidoglycan
Question #9
The use of the antibiotics that inhibit or inactivate cellular ribosomes will result directly in the loss of which of the following functions:
A.   protein synthesis
B.   cell division
C.   DNA replication
D.   phagocytosis
E.   ATP production

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