Equipment was purchased at the beginning of 2022 for $850,000. At the time of its purchase, the equipment was estimated to have a useful life of six years and a salvage value of $100,000. The equipment was depreciated using the straight-line method of depreciation through 2024. At the beginning of 2025, the estimate of useful life was revised to a total life of eight years and the expected salvage value was changed to $62,500. The amount to be recorded for depreciation expense for 2025, reflecting these changes, is:

Malaria and HIV often coexist in patients due to geographic overlap. Which of the following would be true regarding these co-existing infections? 

A patient presents with high fever, rash, and neck pain. Lab results show the presence of a Gram-negative diplococcus. The indicated microbe produces an endotoxin that causes internal bleeding (most prominently displayed as small pinpoint hemorrhages); the microbe uses an adhesion mechanism that produces twitching motility, giving the organism the appearance of twitching forward. Based on this information, which of the following adhesion mechanisms is being used by the causative agent?

An epidemiologist studying diphtheria in Eastern Europe gathers information about the total number of active cases in a given area and the number of new cases in that area over a given time. If an epidemic occurs, which of the following would the epidemiologist notice?

Pathogenicity islands are segments of a pathogen’s chromosome acquired by horizontal gene transfers, such as 

What do these graphs show?  

A key feature of an effective vaccine is that it should

An 11-year-old girl undergoing a routine surgery at a local hospital develops a surgical-wound infection. Even with aggressive treatment, the girl dies. The infection she developed is best known as

Why does fish tend to spoil more rapidly than other meats?

An endemic disease will exhibit