A patient is diagnosed with a Pseudomonas aeruginosa infecti…

A patient is diagnosed with a Pseudomonas aeruginosa infection that demonstrates resistance to multiple antibiotic classes. Genetic analysis reveals the presence of multi-drug resistant transporters (MDRs). Which of the following best explains this resistance mechanism?

A 72-year-old man develops muscle wasting in his lower limbs…

A 72-year-old man develops muscle wasting in his lower limbs after being immobilized for 4 weeks due to a pelvic fracture. Microscopic evaluation reveals reduced cell size and increased activity of the ubiquitin-proteasome system. Which of the following best characterizes this type of cellular adaptation?