Final answer:
Corneas can transmit Creutzfeldt-Jakob disease (CJD), so the false statement about disease transmission is that corneas are poor transmitters of microorganisms. Option d.
Step-by-step explanation:
The false statement about disease transmission in the options provided is:
d. Corneas are poor transmitters of microorganisms
Corneas can, in fact, transmit Creutzfeldt-Jakob disease (CJD), a rare and fatal brain disorder. CJD can be transmitted through corneal transplants if the donor had the disease. Therefore, statement b, c, and d are true, but statement a is false.
Heart valves do not commonly transmit bacterial infections; instead, they can become infected in a condition known as endocarditis, usually due to an introduction of bacteria in the bloodstream by other means, such as oral surgery or medical devices. Corneas can transmit CJD (Creutzfeldt-Jakob Disease), which is a prion disease. Tuberculosis infection from transplanted kidneys has been recognized as an emerging problem. Finally, while corneas are generally resistant to infections, when transplanted, they can transmit microorganisms, though they are relatively poor transmitters of microorganisms compared to other tissues.