Viruses are not considered living organisms. Why? A. They can reproduce on their own. B. They have a cell nucleus. C. They need a host cell to reproduce. D. They can move by themselves. 相关知识点: 试题来源: 解析 C。病毒需要宿主细胞才能繁殖,所以不被认为是生物。
Why can ribosomal RNA sequence not be used to group viruses? Why do all cells have the same DNA but different functions? Which cellular structure is unique to prokaryotic organisms? Why does DNA replication happen before cell division?
Why are alkenes called unsaturated hydrocarbons? Explain why a synthesized ester does not always match the odour of the naturally derived chemical. Why is the biological pump important? Why are viruses not considered to be living organisms?
Virion are also known as “viral particles,” and they are the means by which viral nucleic acids are able to move and ‘infect’ living organisms. Without the viral particle (taxi) to carry around the virus DNA (passenger), it would be harmless; in fact, viruses are often described as ...
but don't reproduce on their own or use energy.So we still don’t know what to do with them.The lumpers want to keep viruses in the current system.Some of the splitters say to give them a separate kingdom;and the extreme splitters say that viruses have nothing at all to do with liv...
The answer to whether viruses are alive or not is unclear. The traits of living things are that they can reproduce, they use energy, they can grow,... Learn more about this topic: Viruses Lesson for Kids: Definition & Facts from
Antibodies are immunoglobulins used by the immune system to identify and neutralise foreign pathogens such as bacteria and viruses, preventing them from causing disease. The plasticity of the immune system involves selection rather than instruction as, by extremely rapid mutation and recombination, the ...
To support the claim that it is difficult to determine whether or not a crop plant has been planted a safe distance from weedy relatives 正确答案:A 显示答案 进入答题 问题反馈收藏题目 译文 Transgenic Plants [#paragraph1]Genes from virtually any organism, from viruses to humans, can now be ...
More than a quadrillion quadrillion individual viruses exist on Earth, but most are not poised to hop into humans. Can we find the ones that are?
your adaptive immune system starts actively making antibodies of your own. They're proteins that act like suction cups and stick to viruses or bacteria to help the body get rid of the germs faster and prevent the infection from spreading. Antibodies are specialized to recognize and take down a...