WGU D027 COURSE MATERIAL QUESTIONS AND ANSWERS
Which of the following is not a cellular
function? - correct answer Combustion -
All living cells must absorb and metabolize
sources of energy, excrete waste and by-
products of those processes, and reproduce to
continue offspring. Pyrotechnic processes (i.e.
combustion) are generally metaphorical.
What are mitochondria responsible for? - correct
answer Energy production -
Mitochondria are the energy production
organelles of the cell responsible for the major
,WGU D027
metabolic processes of creating units of energy
(e.g., ATP).
Which if the following can cause edema? - correct
answer Increased lymphatic pressure -
Decreased vascular and lymphatic pressure
does not generally result in the movement and
accumulation of fluid into extravascular spaces.
Increased plasma pressure in the vascular
results in hypertension, while increased
lymphatic pressure will readily result in the
pooling of lymphatic drainage into third spaces
(i.e. edema).
Which of the following best describes the result
of cellular reproduction? - correct answer Two diploid
cells, called daughter cells, are produced -
The resultant offspring of cellular reproduction
is the creation of two daughter cells after the
,WGU D027
completion of mitosis or meiosis. Interphase is
the longest period that a cell spends its life
cycle and is the preparatory stage before
cellular reproduction. Anaphase is the
separation of genetic materials to the opposing
centromeres of the cell, followed by telophase.
What indicates hypokalemia? - correct answer Serum
K decreases to less than 3.5 -
Normal serum potassium (K), also known as
eukalemia, is generally 3.5-5.5 mEq/L, with
some variations of +/- 0.1-0.3 mEq/L depending
on the laboratory testing, age, and other
potential patient-specific conditions and
variations. Alterations in fluid volume or the
administration of a supplement alone do not
necessarily contribute to the development of
hypokalemia.
, WGU D027
What is an example of both hyperplasia and
hypertrophy? - correct answer Uterine enlargement
due to pregnancy -
Hyperplasia is the increase in the number of
cells of an organ or tissue, while hypertrophy is
the enlargement of the cells of a given organ or
tissue without a change in the number of cells.
Muscle cells grow and enlarge (hypertrophy) in
response to increased work or stress from
exercise or increased cardiovascular pressures.
When a liver is damaged or part of it is
removed, it is the one internal solid organ
capable of regeneration to repair itself creating
more cells (hyperplasia). During pregnancy, the
uterus must both grow to create more cells and
enlarge those existing cells in preparation for
the support of a fetus.