Module 1-2 Flashcards
In cell biology what can limit the progress of science?
Technology
(T/F) the paramecium swim by way of using a flagella
False
What limits the paramecium from acquiring more complex functions?
Limited number of bio molecular machines
The paramecium discussed in class contained an organelle called the contractile vacuole. This is the presumed precursor of the:
Kidney
the _________ of the paramecium is possibly an evolutionarily precursor of the kidney
contractile vacuole
Compared to bacteria, which of the cell types below are not responsible for finding food?
Lymphocyte
Macrophage
Fibroblast
In order to examine cells which are smaller than can be detected by the human senses, what needs to be used?
Technology
Comparing a single-called eukaryotic organism with a multicellular organism such as yourself, identify the major difference
Division of labor
A cell that is itself an organism must have a minimum o four needs presented in the lecture. List the four things.
Food
Shelter
Mate
Reproduction
A single celled eukaryotic organism: (3 things)
Has a limited number of bio molecular machines
Must find food, shelter, a mate, and reproduce
Escape from predators
in your own multicellular body, cells with different functions have _______ DNA
the same
in your own multicellular body, different cells in your body have a _______ between them.
division of labor
The end of the ________ touching the cell culture plate still contains the cell equivalent of super-glue.
retraction fiber
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.
Motility improved the fitness of these early cells because:
It allowed them to move away from predators and towards food.
____ bound to some of the membrane invaginations in the endomembrane theory.
Ribosomes
Loss of the cell wall is required for the ________
endosymbiotic theory.
List one limitation of the cell culture technique.
Cells lose their function after awhile
In an extant prokaryotic cell, the outer boundary of life is _____
the cellular membrane
(T/F) The cytoskeleton gave rise to the nuclear envelope.
false
The ancient earth did not contain much _______
oxygen
What limits how big a cell can be?
The surface area to volume ratio
The association of ribosomes with ____________________ would support the endomembrane theory
internal membrane/vesicles invaginations
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
DNA in extant prokaryotic cells is _____
circular
Fluorescence microscopy is a form of __________
light microscopy
When cancer cells are crowded by surrounding cells, the cancer cells become ________________________
spherical and they can still go through cell division.
Why is it important to know the limitations of technology?
To understand the limitations of science
The _____________ enabled the primitive cell to become motile.
cytoskeleton
______ provides a thin, two-dimensional section of the object being studied
TEM
It is presumed that the _________ evolved in these primitive, proto-eukaryotes to remove oxygen, which was toxic to the primitive cells.
peroxisomes
A cell that is anchorage-dependent for growth will also exhibit _________
contact inhibition.
(T/F) A cancer cell will be anchorage-dependent for growth and immortal
false
(T/F) A normal cell is anchorage-dependent for growth and mortal.
true
