because they can't carry out functions
Scientists do not classify viruses as living things because they lack key characteristics of living organisms, such as the ability to reproduce and carry out metabolic processes on their own. Viruses are considered biological entities that require a host cell to replicate.
A single-celled organism without a nucleus would be classified as a prokaryote. Prokaryotes include bacteria and archaea, and are characterized by their lack of a membrane-bound nucleus. Instead, their genetic material is found in the cytoplasm in the form of a nucleoid region.
A polymorphic virus is able to change its code to evade detection by antivirus software, making it difficult to analyze and detect.
A polymorphic virus is a type of malicious software that constantly changes its appearance in order to avoid detection by antivirus programs. It achieves this by encrypting its code with different algorithms each time it infects a new file or system. This makes it difficult for traditional signature-based antivirus software to identify and remove the virus.
A dormant virus may be difficult to diagnose because it does not actively replicate or cause symptoms, making it challenging to detect using standard diagnostic tests. Additionally, dormant viruses may not shed enough viral particles for traditional diagnostic methods to detect their presence. Specialized tests or specific triggers may be required to detect dormant viruses accurately.
lichens, corals, viruses, corals, viruses and carnivourous plants are difficult to classify :)
it depends on the virus
k
Birds are difficult to classify because they must be categorized by their genetic makeup. Sometimes there are over eight classifications for a specific bird.
because eugleana is hard to classify
they are not made up of cells
It is difficult because viruses lack the ability to replicate themselves and theey lacks energy metabolism and other pathways that living things have. Viruses are totally depending on their host. If they want to replicate, they have to infect the host.
The HIV virus has proven difficult to fight for a number of reasons. One of them is the fact that the virus mutates quickly. That means that the virus changes at the genetic level, making finding a vaccine that works for all variants of the virus difficult if not impossible, thus far.
Uninstall the virus protection. (Some are notoriously difficult to get rid of).
difficult
"obfuscated" just means "hidden". The virus was written in a way that makes it difficult to find, allowing it to hide in your computer. Detecting those types of viruses can be difficult.
current and wind patterns