The head of a pin is about 2mm in diameter. Use this
animation to compare the relative sizes of cells and organisms sitting
on a pinhead. Nearly invisible without magnification, dust mites
dwarf pollen grains and human cells. In turn, bacteria and viruses
are even smaller.
Regulated Transcription Insulin Signaling Protein Recycling Consecutive Secretion Regulated Secretion Protein Modification Protein Trafficking Photosynthesis Photosystem II Protein Transport Gradients Cellular Respiration Transcription mRNA Processing mRNA Splicing Translation Lac Operon
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