Bio 2010 - Microbiology » Summer 2023 » Chapter 3 Quiz

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Question #1
Which of the following is NOT found in bacteria?
A.   ribosome
B.   membrane bound nucleus
C.   cell wall
D.   plasma membrane
Question #2
Which of the following is not true about capsules and slime layers?
A.   they can prevent desiccation of bacteria cells
B.   they are required for all bacteria to grow normally in culture
C.   they help bacteria resist phagocytosis by macrophages
D.   they consist of secreted material lying outside of the bacterial cell wall
Question #3
Fimbriae:
A.   sense changes in nutrient concentration
B.   attach bacteria to various surfaces
C.   are pathways for the secretion of exoenzymes
D.   cause bacteria move through fluids
Question #4
What is the purpose of bacterial endospores?
A.   allow the bacterium to make hundreds of "seeds" to spread on the wind
B.   help the bacterium to differentiate into faster growing stages of bacteria
C.   allow the bacterium to survive the absence of oxygen
D.   allow the bacterium to survive extended periods without nutrients
Question #5
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 mitochondria
D.   it is part of a multicellular microorganisms
E.   it contains some peptidoglycan
Question #6
The reason that bacterial cells are more resistant to osmotic shock than are eukaryotic cells is that they:
A.   actively block water molecules from entering the cell
B.   contain a cell wall composed of cellulose
C.   are selectively permeable
D.   contain a cell wall composed of peptidoglycan
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.   DNA replication
C.   phagocytosis
D.   ATP production
E.   protein synthesis

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