What is the biggest single-celled organism? - Murry Gans
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How do you calculate the number of cells in a human, given that they come in all sizes and shapes? Find out here! Still inquisitive? Cell Biology By The Numbers has even more answers.
Ever wonder how many gut bacteria we humans have? If you compare the number of genes our resident bacteria contain to our cellular genes, we are outnumbered 10 to 1. This Nature article sums it all up: Gut bacteria gene complement dwarfs human genome.
Here is an article about the giant coenocyte algae Caulerpa taxifolia published in PLOS|Genetics in January, 2015. This TED-Ed lesson also has lots of information about this invasive algae and why it is so successful: Attack of the killer algae - Eric Noel Muñoz.
Considering the largest unicellular organism leads to wondering what the smallest multicellular organism might be. Here are some interesting links on the subject. Smallest multicellular organism, Dicopomorpha echmepterygis, and Dicyemida.
Interested in learning more about cells? Take a look at these TED-Ed lessons:
How we think complex cells evolved - Adam Jacobson
Insights into cell membranes via dish detergent - Ethan Perlstein
The wacky history of cell theory - Lauren Royal-Woods
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