Question

Which of the following statements about infectious diseases is true?

A. Infectious diseases are the leading cause of death in the United States.
B. Infectious diseases are caused by pathogens.
C. Most infectious diseases can be cured by antibiotics.
D. Infectious diseases cannot be transmitted from animals to humans.

Answer 1

The true statement about infectious diseases is that they are caused by pathogens. Not all infectious diseases can be cured by antibiotics, and some can be transmitted from animals to humans. In developed countries, noncommunicable diseases are the leading cause of death.

Step-by-step explanation:

Among the statements provided regarding infectious diseases, B. Infectious diseases are caused by pathogens is true. Pathogens, including bacteria, viruses, fungi, protozoa, and other agents, are microorganisms that cause diseases. These can be spread through various means, including direct contact, vectors, or even through the air.

It is important to note that not all infectious diseases can be cured by antibiotics, as antibiotics primarily treat bacterial infections and are ineffective against viruses, fungi, and protozoa. Furthermore, many infectious diseases can indeed be transmitted from animals to humans, a process known as zoonosis. As for the leading cause of death, while infectious diseases remain a significant issue worldwide, in developed countries such as the United States, noncommunicable diseases like heart disease and cancer are the leading causes of death.

Answer 2

B. Infectious diseases are caused by pathogens.

Step-by-step explanation:

Any disease-causing organism is called a pathogen. The infectious diseases are the ones that are caused by pathogens. Some of the pathogens that cause these diseases are bacteria, fungi, viruses, protozoans, and prions. These diseases are transmitted from the affected individual to the healthy one by one or other means. For example, rabies is an infectious disease that is acquired through contact with a rabid animal. Only bacterial diseases can be cured by antibiotics. Some examples of infectious diseases are malaria, dengue, hepatitis, tuberculosis, etc.