Why can a virus pass a filter that stops bacteria? Viruses are smaller than bacterial cells, so a filter that catches cells can still let virus particles through. The number to keep beside that choice is 1892. Ivanovsky’s 1892 filtration of tobacco mosaic disease is the historical clue that something smaller than bacteria remained infectious.
Viruses are smaller than bacterial cells, so a filter that catches cells can still let virus particles through. The figure 1892 belongs in the answer because Ivanovsky’s 1892 filtration of tobacco mosaic disease is the historical clue that something smaller than bacteria remained infectious. This page explains a classification or public-health fact. It does not diagnose an illness or write a treatment plan.
Mark each measure High, Any or Low for what you want. The fit number moves with every mark, and your marks follow you to the next page in this app.
| Measure | Viruses | Vaccines and immunity | You want |
|---|---|---|---|
| Familiarity | |||
| Medical weight | |||
| Benefit | |||
| Risk | |||
| Research | |||
| Live debate |
Mark at least one measure to see a fit number.
Scores are the atlas’s 0–100 teaching marks for each topic. They are not a diagnosis, a dose or a treatment choice.
Tick a point once you could explain it in your own words. Ticks stay on this device.
0 of 4 points done
All points done. Next: Bacteria — How they live
Viruses are smaller than bacterial cells, so a filter that catches cells can still let virus particles through. Hold the figure 1892 beside that sentence, then use the atlas link for the longer chapter. This lookup only settles the search decision named in the heading.
Ivanovsky’s 1892 filtration of tobacco mosaic disease is the historical clue that something smaller than bacteria remained infectious. That is why 1892 is printed on this card rather than left as a vague “many”. Open the linked section if you need the map, not a personal instruction.
The wrong turn is to treat the opposite claim as the same fact. Viruses are smaller than bacterial cells, so a filter that catches cells can still let virus particles through. This page explains a classification or public-health fact. It does not diagnose an illness or write a treatment plan.
After the decision, read the two linked atlas pages and stop. Ivanovsky’s 1892 filtration of tobacco mosaic disease is the historical clue that something smaller than bacteria remained infectious. This page explains a classification or public-health fact. It does not diagnose an illness or write a treatment plan.
This page explains a classification or public-health fact. It does not diagnose an illness or write a treatment plan. Viruses are smaller than bacterial cells, so a filter that catches cells can still let virus particles through.
Viruses — History · Bacteria — How they live
🤧 Is a common cold a virus or a bacterium? · 🧫 Does a virus carry its own ribosomes? · 🔵 Are coccus, bacillus and spirillum three species? · 🦠 Is one cell enough to count as a bacterium? · 🍞 Is baker’s yeast a bacterium or a fungus? · 🍄 Are a mold and a mushroom two different kingdoms? · Microbe lookups