Walden University Exam | graded A+| Updated &
Verified | 2026
A runner has depleted all the oxygen available for muscle energy. Which of the following will facilitate
his continued muscle performance? - SOLUTION>>Anaerobic glycolysis
What causes the rapid change in the resting membrane potential that initiates an action potential? -
SOLUTION>>Sodium gates open, and sodium rushes into the cell, changing the membrane potential
from negative to positive.
A 12-year-old male is diagnosed with Klinefelter syndrome. His karyotype would reveal which of the
following? - SOLUTION>>XXY
A nurse is reviewing the pedigree chart. When checking for a proband, what is the nurse looking for? -
SOLUTION>>The person who is first diagnosed with a genetic disease
An aide asks the nurse why people who have neurofibromatosis will show varying degrees of the
disease. Which genetic principle should the nurse explain to the aide? - SOLUTION>>Expressivity
In teaching a patient with cirrhosis, which information should the nurse include regarding cholesterol? -
SOLUTION>>Cholesterol decreases the membrane fluidity of the erythrocyte, which reduces its ability
to carry oxygen.
, When a patient asks what causes cystic fibrosis, how should the nurse respond? Cystic fibrosis is caused
by an gene - SOLUTION>>Autosomal recessive