Bio 2010 - Microbiology » Spring 2023 » Chapter 3 Quiz

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Question #1
Which of the following is NOT found in bacteria?
A.   plasma membrane
B.   ribosome
C.   cell wall
D.   membrane bound nucleus
Question #2
Plasmids are important to the genetics of many bacteria. This is because:
A.   they are inherited from one generation to the next
B.   all of these
C.   they may carry genes that give their host a selective advantage
D.   they can render bacteria drug-resistant
Question #3
Which of the following is not true about capsules and slime layers?
A.   they are required for all bacteria to grow normally in culture
B.   they consist of secreted material lying outside of the bacterial cell wall
C.   they can prevent desiccation of bacteria cells
D.   they help bacteria resist phagocytosis by macrophages
Question #4
Fimbriae:
A.   cause bacteria move through fluids
B.   sense changes in nutrient concentration
C.   attach bacteria to various surfaces
D.   are pathways for the secretion of exoenzymes
Question #5
A bacillus bacterium with a single flagellum at each end is described as:
A.   monotrichous
B.   lophotrichous
C.   peritrichous
D.   amphitrichous
Question #6
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
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 a eukaryote
B.   it is gram positive
C.   it contains some peptidoglycan
D.   it is part of a multicellular microorganisms
E.   it contains mitochondria
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.   contain a cell wall composed of peptidoglycan
D.   actively block water molecules from entering the cell
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.   cell division
B.   protein synthesis
C.   DNA replication
D.   phagocytosis
E.   ATP production

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