ASU BIO 181 EXAM 1 QUESTIONS WITH CORRECT ANSWERS

ASU BIO 181 EXAM 1 QUESTIONS WITH
CORRECT ANSWERS 2026-2027
The association of ribosomes with invaginations would support the theory. -
CORRECT ANSWER -membrane, endomembrane



After a cell is pancake shaped in a cell culture dish, the order of events that occurs as a cell walks is? -
CORRECT ANSWER -filapodia, lamellipodia, cell muscle, retraction fiber



T/F It is presumed that the peroxisomes evolved in these primitive, proto-
eukaryotes to remove oxygen, which was toxic to the primitive cells. - CORRECT ANSWER -true



T/F In an extant prokaryotic cell the outer boundary of life is the capsule. - CORRECT ANSWER -false



T/F When cancer cells are crowded by surrounding cells, the cancer cells become spherical and they can
still go through cell division. - CORRECT ANSWER -true



T/F Loss of the cell wall was required for the endomembrane system theory. - CORRECT ANSWER -true



T/F Fluorescence microscopy is form of light microscopy - CORRECT ANSWER -true



T/F Loss of the cell wall is required for the endosymbiotic theory. - CORRECT ANSWER -true



T/F TEM provides a thin, two-dimensional section of the object being studied. - CORRECT ANSWER -true



T/F The sytoskeleton enabled the primitive cell to become motile. - CORRECT ANSWER -true



T/F the ancient earth did not contain much oxygen - CORRECT ANSWER -true



A normal cell is and for growth. - CORRECT ANSWER -mortal, anchorage dependent

, T/F Ribosomes bound to some of the membrane invaginations in the endomembrane theory -
CORRECT ANSWER -true



T/F the cytoskeleton gave rise to the nuclear envelope - CORRECT ANSWER -false



What limits how big a cell can be? - CORRECT ANSWER -the surface area to volume ratio



T/F DNA in extant prokaryotic cells is circular. - CORRECT ANSWER -True



Why did Motility improved the fitness of these early cells? - CORRECT ANSWER -
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it allowed them to move away from predators and towards food
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T./F the end of the retraction fiber touching the cell culture plate still contains the cell equivalent of sup er
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glue. - CORRECT ANSWER -true X2 X2 X2 X2




T/F the presumed first step in the transition of the primitive, proto-
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prokaryotic cell into the primitive, proto-eukaryotic cell was the loss of the cell wall. -
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CORRECT ANSWER -true
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1n order to examine cellsRwhich are smaller than can be detected by the human senses what needs to b e
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used ? - CORRECT ANSWER -technology
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A cell that is itself an organism must have a minimum of four needs presented in lecture -
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CORRECT ANSWER -find food, find shelter, find mate, and reproduce.
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compared to bacteria which of the cell types below are not responsible for finding food? -
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CORRECT ANSWER -lymphocyte, macrophage, and fibroblast
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T/F In your own mulitcellular body, different cells in your body have a division of labor between them. -
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CORRECT ANSWER -true
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