What is the process of making proteins called? Does DNA code for ribosomal RNA? What does RNA stand for? What is a RNA virus genome? Does the process of protein synthesis involve transfer RNA? How does a ribosome multiply ? Does it have DNA besides RNA and proteins?
What is a RNA virus genome? What molecule is produced by RNA polymerase during transcription? Is transfer RNA double-stranded? What is the protein (enzyme) called that directly makes more RNA? RNA directs the synthesis of protein through which process?
Viruses are built from short sequences of nucleic acid, either DNA or RNA wrapped in a protein shell. Until the invention of the electron microscope, it was impossible to visualize a virus. The first viruses to be visualized were bacteriophage, which appeared to have a head and tail-like ...
Epidemics流行病 often occur when a virus from jumps from animals to humans. This is true of the RNA viruses that caused the Ebola, Zika, and SARS epidemics, and the COVID-19 pandemic大流行. Once in humans, the virus still mutates- usally not enough to create a new virus, but enough ...
Virus infectivity is defined as the capacity of viruses to enter the host cell and exploit its resources to replicate and produce progeny infectious viral
What is avirus? Here’s our full, formal definition ofvirus: Avirusis an ultramicroscopic (20 to 300 nm in diameter), metabolicallyinert, infectious agent that replicates only within the cells of living hosts, mainly bacteria, plants, and animals: composed of anRNAorDNAcore, a protein coat...
Encoding the virus's make-up is the longest genome of any RNA-based virus – a single strand of nucleic acid roughly 26,000 to 32,000 bases long. There are four known genuses in the family, named Alphacoronavirus, Betacoronavirus, Gammacoronavirus, and Deltacoronavirus. The first two only...
But because no one is yet immune to a new virus, 但是因为至今没有任何人 对新出现的病毒免疫, it has so many potential hosts that it doesn’t need ideal conditions to spread. 所以它有很多不需要在理想环境下 就可以感染的潜在宿主。
The cell the virus invades is called the host cell. The virus basically turns the cell into a factory to make more viruses which then invade more cells. MY LATEST VIDEOS Viruses consist of a stand of genetic information ( DNA or RNA ) inside a protein shell called a capsid. Some viruses...
COVID-19, the disease caused by the novel coronavirus, has infected tens of thousands of people worldwide. Here’s what you need to know.