Exam (elaborations)
BIO ASU 181 EXAM 1 QUESTIONS AND ANSWERS 2024
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BIO ASU 181 EXAM 1 QUESTIONS AND ANSWERS 2024
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BIO ASU 181 EXAM 1T/F It is presumed that the peroxisomes evolved in these primitive, proto-
eukaryotes to remove oxygen, which was toxic to the primitive cells. - ANSWERS-
true
T/F In an extant prokaryotic cell the outer boundary of life is the capsule. -
ANSWERS-false
The association of ribosomes with _____ invaginations would support the _____
theory. - ANSWERS-membrane, endomembrane
After a cell is pancake shaped in a cell culture dish, the order of events that occurs
as a cell walks is? - ANSWERS-filapodia, lamellipodia, cell muscle, retraction fiber
T/F When cancer cells are crowded by surrounding cells, the cancer cells become
spherical and they can still go through cell division. - ANSWERS-true
T/F Loss of the cell wall was required for the endomembrane system theory. -
ANSWERS-true
T/F Fluorescence microscopy is form of light microscopy - ANSWERS-true
T/F Loss of the cell wall is required for the endosymbiotic theory. - ANSWERS-true
, T/F TEM provides a thin, two-dimensional section of the object being studied. -
ANSWERS-true
T/F The sytoskeleton enabled the primitive cell to become motile. - ANSWERS-
true
T/F the ancient earth did not contain much oxygen - ANSWERS-true
A normal cell is _____ and ____ for growth. - ANSWERS-mortal, anchorage
dependent
T/F Ribosomes bound to some of the membrane invaginations in the
endomembrane theory - ANSWERS-true
T/F the cytoskeleton gave rise to the nuclear envelope - ANSWERS-false
What limits how big a cell can be? - ANSWERS-the surface area to volume ratio
T/F DNA in extant prokaryotic cells is circular. - ANSWERS-True
Why did Motility improved the fitness of these early cells? - ANSWERS-it allowed
them to move away from predators and towards food
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