Answers| Actual Complete Exam |Already Graded A+
Actin Filaments are present in: ✔Correct Answer--The cell's cortex
Microtubules are present in: ✔Correct Answer--The cell's interior
Cytokinesis in plant and animal cells takes two forms: ✔Correct Answer--Animal: Contractile Ring
Formation
Plant: Phragmoplast Formation
An important checkpoint regulator is at the Gap 2/M-phase transition. Here, Cyclin B and cdkl1
activate and form MPF which becomes a _____ _____ and causes DNA to condense into _____.
✔Correct Answer--Histone Kinase
Chromosomes
The _____ begins to be destroyed at the Metaphase of the cell cycle causing the chromosomes to
begin to _____. ✔Correct Answer--Cyclin B1
Decondense
The activation of both MPF and MAPK result in _____ _____ of the cytoplasm during M-phase.
✔Correct Answer--Settling down
MAPK has two different functions depending on where this Kinase acts in the _____ _____. If the
Kinase becomes active during interphase, the cell is triggered to progress through the _____ _____.
✔Correct Answer--Cell cycle
Cell cycle
Two types of second messengers discussed in lecture can exist downstream of a plasma membrane
receptor. These are _____ and _____. ✔Correct Answer--Cyclic AMP
MAP Kinase
There are two basic forms of cytoplasmic signaling (i.e signal transduction). One uses _____ and the
other uses _____. ✔Correct Answer--Protein Kinases
Calcium Signal
What is the difference between a single-pass transmembrane protein and a 7-pass transmembrane
protein? ✔Correct Answer--A single pass TMP is a singular protein that passes once through the
bilayer. A 7-pass protein passes through the bilayer 7 times, creating a channel for ions to pass
through. A single pass TMP cannot create an ion channel.
Is a cancer cell anchorage independent and immortal, or is it anchorage dependent and mortal? Do
they exhibit contact inhibition? ✔Correct Answer--They are anchorage independent and immortal,
and they do not exhibit contact inhibition, because they continue to grow despite their surroundings.
If something is soluble in water, a hydration forms around it and it is termed: ✔Correct Answer--
Hydrophilic.
, What limits the paramecium from acquiring more complex functions? ✔Correct Answer--The
paramecium cannot fit any more biomachinery into its space.
What limits an individual cell from becoming more complex? ✔Correct Answer--Division of labor.
T/F: In your own multicellular body, different cells have a division of labor between them:
✔Correct Answer--True.
T/F: A normal cell is anchorage-dependent for growth and mortal: ✔Correct Answer--True.
Comparing a single-celled Eukaryotic organism with a multi-cellular organism such as yourself, what
is the major difference: ✔Correct Answer--Division of labor.
T/F: In your own multicellular body, cells with different functions have different DNA: ✔Correct
Answer--False.
A single celled Eukaryotic organism: ✔Correct Answer--Has a limited number of biomolecular
machines
Must find food, shelter, a mate, and reproduce
Must escape from predators
The paramecium discussed in class has contained an organelle called the contractile vacuole. This is
the presumed precursor of the: ✔Correct Answer--Kidney.
T/F: A cell that is anchorage-dependent for growth will also exhibit contact inhibition: ✔Correct
Answer--True.
In order to examine cells that are smaller than can be detected by the human eye, what needs to be
used? ✔Correct Answer--Technology.
Compared to bacteria, which of the cell types are not responsible for finding food? ✔Correct
Answer--Lymphocyte
Macrophage
Fibroblast
In cell biology, what can limit the progress of science? ✔Correct Answer--Technology.
T/F: The contractile vacuole of the paramecium is possibly an evolutionary precursor of the kidney:
✔Correct Answer--True.
T/F: A cancer cell will be anchorage-dependent for growth and immortal: ✔Correct Answer--False.
T/F: The paramecium swims by way of using a flagella: ✔Correct Answer--False.
T/F: The cytoskeleton allowed the primitive cell to become motile: ✔Correct Answer--True.
T/F: Ribosomes bound to some of the membrane invaginations in the endomembrane theory:
✔Correct Answer--True.
T/F: The end of the retraction fiber touching the cell culture plate still contains the cell-equivalent of
super-glue: ✔Correct Answer--True.