How effective are antibiotics against viral infections? Antibiotics can prevent viral entry into the cell by binding to host-receptor proteins. Antibiotics work by inhibiting enzymes specific to bacteria. Antibiotics have no effect on eukaryotic or virally encoded enzymes. Antibiotics activate the immune system, and this decreases the severity of the infection. Antibiotics do not kill viruses because viruses do not have DNA or RNA.

Q: Which statements describe ways in which antibiotic resistant bacteria can spread? Health care…

A: Bacteria that are resistant can spread in different ways. Depending on the environment, many factors…

Q: True or False: There are antibiotics that target viruses?

A: Major natural source of antibiotics is fungi, bacteria and other prokaryotes. There are hundreds of…

Q: An outbreak of Ebola between 2014 and 2016 resulted in 28,616 cases and 11,310 deaths in Guinea,…

A: Ebola virus disease (EVD), known as Ebola haemorrhagic fever, is a rare disease, but of the severe…

Q: Which of the following statements describes the lysogenic cycle of lambda (A) phage? After…

A: In this lambda phage, the virus infects the bacteria, this virus can perform two types of life…

Q: You are researching how the virus that you are studying spreads through a host. Which of the…

A: The study of viruses is important in understanding how diseases spread and how to develop treatments…

Q: Virology:viruses were initially believed to not serve any essential function for their host.Today we…

A: virus, it is infectious agent of small size with  simple composition which can multiply only in…

Q: Which type of virus would not need a viral enzyme for transcription? retrovirus |ds RNA ss (+) sense…

A: Microorganisms are the ones which can be seen only under a microscope. Mostly they are unicellular…

Q: If an animal virus does not lyse the host cell and does not produce symptoms, it is best described…

A: A viral infection is the infection caused by virus particles inside the body. Depending on person’s…

Q: Select all the following events that occurs in both the lytic and lysogenic cycle of bacteriophage…

A: Introduction  Within host cells, viruses go through the lytic and lysogenic cycles. Viruses are…

Q: Which group of viruses have genetic material that can be directly transcribed and translated…

A: Viruses are on the border of the biotic and abiotic world. These are genomic particles either DNA or…

Q: Why do we use such terms as infectious  particles, agents, or active or inactive when referring to…

A: Viruses are microscopic organisms. They are obligate parasites as they do not have their own…

Q: After a virus has entered its host, what factor usually determines the manner (or steps) in which…

A: The nature of the genome determines how the genome is replicated and expressed as viral proteins. If…

Parasitic infections

A parasite is an organism that lives in the body of another organism and obtains food at the expense of the host. There are two kinds of parasites they are internal and external. An internal parasite lives inside another organism and is known as endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite.