6. A patient goes to the doctor with a cold and sore throat and asks for antibiotics. The doctor refuses to prescribe antibiotics because the illness is caused by which of the following pathogens?
Answer: C
The illness is caused by a virus.
Antibiotics are ineffective against viral infections, which include many common illnesses such as colds and sore throats. In this case, the doctor correctly identifies that the patient's illness is viral in nature, which is why antibiotics were not prescribed.
A) Protist
While protists can cause some infections, they are not the cause of the common cold or sore throat. These types of illnesses are typically viral. Therefore, this option is incorrect as it does not represent the pathogen responsible for the patient's symptoms.
B) Fungus
Fungal infections can lead to various health issues, but they do not cause the common cold or sore throat. The patient's symptoms are consistent with a viral infection, making this option incorrect in the context of the question.
C) Virus
Viral infections are the primary cause of the common cold and sore throat. Since antibiotics are not effective against viruses, the doctor’s refusal to prescribe them is appropriate and illustrates the correct understanding of the pathogen involved.
D) Bacteria
Bacterial infections may be treated with antibiotics, but they are not responsible for the majority of cold and sore throat cases, which are usually viral. Thus, this option is incorrect as it does not align with the patient's condition.
Conclusion
The correct answer is C) Virus, as it accurately reflects the nature of the infection that leads to common cold and sore throat symptoms. All other options (A, B, and D) fail to address the viral basis of the illness, reinforcing the necessity of distinguishing between viral and bacterial infections when considering treatment options.