7 results for “virus”

1. Life & Biology

   Bacteria and Viruses

   Viruses A virus is far smaller and far simpler than a bacterium: a package of genetic

   Article · 4 min read

   

2. The Human Body

   The Immune System

   viruses before new viruses can be made. Memory After the battle, most of the clones die off, but some

   Article · 4 min read

   

3. Life & Biology

   What Is Life? The Cell

   virus has instructions but no machinery of its own, which is why biologists argue about whether

   Article · 4 min read

   

4. The Human Body

   Lungs and Breathing

   viruses. Clean air is not a luxury; it is the raw material of the 20,000 breaths

   Article · 4 min read

   

5. The Human Body

   The Heart and Blood

   viruses and damaged cells. Platelets are tiny fragments that rush to a cut and, together with

   Article · 4 min read

   

6. Life & Biology

   DNA and Genes

   viruses and defunct genes, and the function of much of it is still debated. Why you are not a copy

   Article · 4 min read

   

7. Life & Biology

   Evolution

   Viruses such as influenza evolve so fast that vaccines must be updated annually. Peppered moths in industrial

   Article · 4 min read