Module 1-2 Flashcards
In your own multicellular body, different cells in your body have a division of labor between them. (T/f)
True
Compared to bacteria which of the cell types below are not responsible for finding food?
• lymphocyte
• macrophage
• fibroblast
• none of the above
• answers a, b and c
Answers a, b, and C
What limits the paramecium from acquiring more complex functions?
The number of biomolecular machines that it can contain within itself
The paramecium discussed in class contained an organelle called the contractile vacuole. This is the presumed precursor of the:
• heart
• kidney
• liver
• mouth
• answer not on this list
Kidney
What limits an individual cell from becoming more complex?
Individual cells have a limited number of biomoleular machines
The contractile vacuole of the paramecium is possibly an evolutionary precursor of the kidney. (T/f)
True
In your own multicellular body, different cells in your body have a division of labor. (T/f)
True
A single-celled eukaryotic organism:
• has a limited number of bio molecular machines
• must find food, shelter, a mate, and reproduce
• escape from predators
• none of the above
• a, b, and c
A, b, c
A cell that is itself an organism must have a minimum of 4 needs presented in the lecture. These are:
Finding a mate to reproduce, finding food, escaping from a predator, finding shelter
In your own multicellular body, cells with different functions have different DNA. (T/f)
False
In order to examine cells which are smaller than can be detected by the human senses what needs to be used?
A) Patience
B) hypotheses
C) technology
D) a cell trap
F) none of the above
Technology
In cell Biology why can limit the progress of science?
A) lymphocyte
B) progress
C) eating
D) bacteria
E) technology
Technology
Comparing a single-called eukaryotic organism with a multicellular organism such as yourself identify the major difference from the list below
A) escape from a predator
B) finding a mate
C) division of labor
D) finding its own food
E) nucleus
Division of labor
The paramecium swims by way of using a flagella. (T/f)
False; cilia
When cancer cells are crowded by surrounding cells, the cancer cells become spherical and they can still go through cell division. (T/f)
True
The ancient earth did not contain much oxygen. (T/f)
True
List one limitation of the cell culture technique
Not all cells grow in a cell culture
A normal cell is ______ and ________ for growth
Mortal, Anchorage dependent
DNA in extant prokaryotic cells is circular. (t/f)
True
In an extant prokaryotic cell, the outer boundary of life is the capsule. (t/f)
False; the plasma membrane is the outer boundary of life
Ribosomes bound to some of the membrane invaginations in the endomembrane theory. (t/f)
True
Fluorescence microscopy is a form of light microscopy. (t/f)
True
Finish the sentence based on the lectures: the association of ribosomes with _______ invaginations would support the ______ theory
Membrane, endomembrane
The cytoskeleton gave rise to the nuclear envelope. (T/f)
False; an infolded plasma membrane attached to a chromosome with an ancestral prokaryote may have led to the formation of the nuclear envelope
What limits how big a cell can be?
The surface area to volume ratio
Loss of the cell wall was required for the endomembrane system theory. (t/f)
True
It is presumed that the peroxisomes evolved in these primitive, proto-eukaryotes to remove oxygen, which was toxic to the primitive cells. (T/f)
True
The end of the retraction fiber touching the cell culture plate still contains the cell equivalent of super-glue. (T/f)
True
Loss of the cell wall is required for the endosymbiotic theory. (t/f)
True
Motility improved the fitness of these early cells because:
A) it allowed them to make a nuclear envelope
B) it caused them to acquire ribosomes
C) it allowed them to move away from predators and towards food
D) two of the above
E) none of the above
it allowed them to move away from predators and towards food
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. (T/f)
True
TEM provides a thin, two-dimensional section of the object being studied. (t/f)
True
Why is it important to know the limitations of technology?
If limits are known, advancements can occur
The cytoskeleton enabled the primitive cell to become motile. (T/f)
True
After a cell is pancaked shaped in a cell culture dish, the order of events that occurs as a cell walks is (pick the best order)
A) lamellipodia, filopodia, cell muscle, retraction fiber
B) cell muscle, cell super-glue, retraction fiber, lamellipodia
C) filopodia, lamellipodia, cell muscle, retraction fiber
D) two of the above
E) none of the above
filopodia, lamellipodia, cell muscle, retraction fiber
A cell that is anchorage-dependent for growth will also exhibit contact inhibition. (t/f)
True
A cancer cell will be anchorage- dependent for growth and immortal. (t/f)
False
A normal cell is anchorage - dependent for growth and mortal. (t/f)
True
