Endomembrane & Endosymbiotic Theories|
Complete Questions with Verified A+ Graded
Rationales Latest Updated 2026
The association of ribosomes with _____ invaginations would support the _____ theory.
membrane, endomembrane
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?