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。
Viruses are not living things. Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not liv...
Why are viruses not considered to be living organisms? Why is cyanobacteria difficult to stain? Why is pigweed so difficult to control? Why is molecular movement essential for life? Why is grouping living organisms helpful? Why must the specimen observed be very thin under a microscope?
Describe the structure and function of neutrophil cells. Why would duplication of a gene potentially cause a disease phenotype? Discuss cellular immunity/cell-mediated immunity. Cell-mediated immunity: Explain what activation does/is. Why are viruses referred to as obligate intercellular parasites?
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
What these researchers are talking about is the discovery that virion particles share stunning similarities to naturally occurring virus-like particles produced by all living cells called exosomes. Exosomes, like many viruses (i.e. enveloped viruses) are enclosed in a membrane, and are within the ...
viruses, bacteria, animals, stars, and nebulas. These non-fundamental entities constitute the non-fundamental ontology of high-level sciences. These non-fundamental ontologies have the remarkable feature of being autonomous at certain scales. For instance, one can formulate a theory of chemical element...
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?
Why it is beneficial for cells to be small? What functions do membrane proteins serve? Do adipocytes have ribosomes? Why do viruses need cells? Why should plants require both chloroplasts and mitochondria? Can they live without either one?
Why must cells absorb energy and nutrients? Why are cells limited in the size to which they can grow? Why is homeostasis important for cells? Why are colonial organisms not classified as multicellular despite having many cells? Why do viruses need cells? Why are B cells important? Give ...