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Death is what happens when a living organism stops performing biological functions, and for the moment we’re only interested in the active particles. So were they ever alive? Most biologists say no. Viruses are not made out of cells, they can’t keep themselves in a stable state, they don’t grow, and they can’t make their own energy.Are viruses alive GCSE Biology?
Are viruses alive? The usual answer to this question (and usually for the purpose of passing your Biology GCSEs) is that viruses are not alive, because they do not complete all of the seven life processes: Movement, Respiration, Sensitivity, Nutrition, Excretion, Reproduction and Growth.What would the world be like without viruses?
What scientists know for sure is that without viruses, life and the planet as we know it would cease to exist. And even if we wanted to, it would probably be impossible to annihilate every virus on Earth.Did viruses exist before cells?
The final hypothesis proposes that viruses existed before cells; ancient viruses may have evolved over time to produce membranes and cell walls, giving rise to living cells. It’s possible that all these theories are right.