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-it allowed
them to move away from predators and towards food
T./F the end of the retraction fiber touching the cell culture plate still contains the cell
equivalent of super glue. - Correct answer-true
T/F the presumed first step in the transition of the primitive, proto-prokaryotic cell into
the primitive, proto-eukaryotic cell was the loss of the cell wall. - Correct answer-true
1n order to examine cells which are smaller than can be detected by the human senses
what needs to be used ? - Correct answer-technology
A cell that is itself an organism must have a minimum of four needs presented in lecture
- Correct answer-find food, find shelter, find mate, and reproduce.
compared to bacteria which of the cell types below are not responsible for finding food?
- Correct answer-lymphocyte, macrophage, and fibroblast
T/F In your own mulitcellular body, different cells in your body have a division of labor
between them. - Correct answer-true
T/F The paramecium swims by way of using a flagella - Correct answer-false
T/F A normal cell is anchorage-dependent for growth and mortal - Correct answer-true
what limits the paramecium from acquiring more complex functions? - Correct answer-
cannot fit anymore biomachinery into its space
comparing a singled cell eukaryotic organism with a multicellular organism such as
yourself identify the major difference from the list below. - Correct answer-division of
labor
in the cell biology what can limit the progress of science - Correct answer-technology
T/F a cell that is anchorage-dependent for growth will also exhibit contact inhibiton. -
Correct answer-true
explain what limits an individual cell from becoming more complex - Correct answer-
individual cell have a limit number of biomolecular machines. In a multicellular organism
you get a division of labor between different cell types so that the whole can do more
than the sum of the parts with similar number of biomolecular machines per cell.
T/F the contractile vacuole of the paramecium is possibly an evolutionary of the kidney -
Correct answer-true