ASU BIO 181 Exam 1 Question and Answer | A+ Verified Updated | Frequently Tested

ASU BIO 181 Exam 1 Question and Answer | A+
Verified Updated | Frequently Tested
• After a cell is pancake shaped in a cell culture dish, the order of events that occurs as
a cell walks is? -✓✓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. -✓✓true

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

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

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

• T/F Fluorescence microscopy is form of light microscopy -✓✓true

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

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

• T/F The sytoskeleton enabled the primitive cell to become motile. -✓✓true

• T/F the ancient earth did not contain much oxygen -✓✓true

• A normal cell is _____ and ____ for growth. -✓✓mortal, anchorage dependent

• T/F Ribosomes bound to some of the membrane invaginations in the endomembrane
theory -✓✓true

• T/F the cytoskeleton gave rise to the nuclear envelope -✓✓false

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

• T/F DNA in extant prokaryotic cells is circular. -✓✓True

• Why did Motility improved the fitness of these early cells? -✓✓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. -✓✓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. -✓✓true

• 1n order to examine cells which are smaller than can be detected by the human
senses what needs to be used ? -✓✓technology

• A cell that is itself an organism must have a minimum of four needs presented in
lecture -✓✓find food, find shelter, find mate, and reproduce.

• compared to bacteria which of the cell types below are not responsible for finding
food? -✓✓lymphocyte, macrophage, and fibroblast

• T/F In your own mulitcellular body, different cells in your body have a division of labor
between them. -✓✓true

• T/F The paramecium swims by way of using a flagella -✓✓false

• T/F A normal cell is anchorage-dependent for growth and mortal -✓✓true

• what limits the paramecium from acquiring more complex functions? -✓✓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. -✓✓division of labor

• in the cell biology what can limit the progress of science -✓✓technology

• T/F a cell that is anchorage-dependent for growth will also exhibit contact inhibiton. -
✓✓true

• explain what limits an individual cell from becoming more complex -✓✓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
-✓✓true

• a singled celled eukaryotic organism -✓✓has a limited number of biomolecular
machines
must find food, shelter, a mate and reproduce
escape from predators