Answer:Since viruses are not alive, they rely on host cells to complete their lifecycle. They act like parasites—infecting healthy cells, using them to reproduce, and destroy them when they are done. Viruses are tiny packages ofDNA or RNA (genetic material)that travel in a protein shell. T...
Are viruses alive? Explain. Describe how a virus control a cell. How do viruses impact human beings? Be descriptive and cite evidence. How are enzymes formed in viruses? How are infectious viruses safely and securely stored in a laboratory? Are all viruses harmful? What are some examples of ...
Not all viruses are deadly. For example, people get colds all of the time and do not die. But influenza kills tens of thousands of people in the U.S. each year, and other viruses, such as Ebola virus, orWest Nile virusand in early 2020, the COVID-19 coronavirus, have inflicted a ...
How do you apply the scientific method to determine whether viruses are alive or not? Name three characteristics of viruses. Are viruses living or nonliving? Explain your answer. (a) What are the components of viruses? (b) How does each of these components affect the ability of the virus t...
通过上文“Antibiotics(抗生素) kill bacteria, but they don’t work on viruses at all.(抗生素能杀死细菌,但对病毒根本不起作用。)”可知,抗生素对病毒不起作用。而下文“In fact, researchers found that so many people are convinced that antibiotics will help their viral symptoms that up to one third...
These are more like viruses or hacker tools than spyware. What Spyware Can Do Spyware can do any number of things once it's installed on your computer. At a minimum, most spyware runs as an application in the background as soon as you start your computer up, hogging RAM and processor...
Viruses 1. How do scientists classify things as living? 1.Made of cells 2.Has a metabolism to grow and reproduce 3.Information stored in DNA 2. Are viruses alive? NO! Living or Nonliving? Viruses 3. What do viruses and living organisms have in common? Both use nucleic acids to store ...
Viruses lack the chemical machinery that human cells use to support life. So, HIV requires a host cell to stay alive and replicate. To reproduce, the virus creates new virus particles inside a host cell, and those particles carry the virus to new cells. Fortunately the virus particles are ...
“life” side of the ledger. But now I would say it this way: viruses are of life, and they interact with life, but they are not alive. For one thing, all lifeforms can trace their origins back, across 4bn years, to a single common ancestor. Viruses cannot: they appear to have ...