Food Microbiology- FS 2172-Mustapha exam questions with answers

Food Microbiology: FS 2172-Mustapha exam
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questions with answers |\ |\




Function of phospholipid bilayer - CORRECT ANSWERS ✔✔To allow
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certain ions and nutrients to enter (transport) and leave the cell
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Peripheral proteins are located... - CORRECT ANSWERS ✔✔on the
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inner and outer surface of the cell membrane
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Function of peripheral proteins - CORRECT ANSWERS
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✔✔Participate in chemical reactions as well as support the |\ |\ |\ |\ |\ |\ |\ |\ |\



membrane structure (scaffolding) |\ |\




Proteins that penetrate through the double layer - CORRECT
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ANSWERS ✔✔Integral proteins |\ |\




Function of integral proteins - CORRECT ANSWERS ✔✔provide a
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pathway where things go in and out
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Mesosome - CORRECT ANSWERS ✔✔Appears near where the cell
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membrane begins to fold in/divide before replication
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True or false: Mesosomes are attached to DNA - CORRECT
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ANSWERS ✔✔True |\

, Isotonic solution - CORRECT ANSWERS ✔✔No change in osmotic
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pressure


Hypotonic solution - CORRECT ANSWERS ✔✔-More water outside
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cell than there is inside
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-H2O molecules enter cell and cell will lyse
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Osmotic lysis - CORRECT ANSWERS ✔✔Cells fill with water,
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explode, and die |\ |\




Hypertonic - CORRECT ANSWERS ✔✔-Less water outside of cell,
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more water inside cell
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-H2O falls out of cell
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Plasmolysis - CORRECT ANSWERS ✔✔Shrinkage of cell during
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hypertonic solution |\




Random movement of chemicals and nutrients into and out of the
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cell - CORRECT ANSWERS ✔✔Passive diffusion
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O2 cells migrate into cell until equilibrium - CORRECT ANSWERS
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✔✔Simple diffusion |\




Cell needs enzyme to carry out diffusion - CORRECT ANSWERS
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✔✔Facilitated diffusion |\