Hooke named cells in 1665. Schwann's work on animals came in 1839, and Virchow's idea in 1855…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Hooke named cells in . Schwann's work on animals came in , and Virchow's idea in .
- How many years passed from Hooke to Virchow?
- How many years passed from Schwann to Virchow?
Need a reminder? The key ideaShow
The cell theory: Schleiden (plants, 1838) and Schwann (animals, 1839) said that living things are made of cells; Virchow (1855) added that every cell comes from a cell. Hooke named cells, Leeuwenhoek first saw live cells and Brown found the nucleus. Image width equals real width times the magnification; 1000 µm make 1 mm.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) years.
Step 2. (b) years.
Answer: years; years.
Discussion (0)
Log in to join the discussion.
Loading…