Earth's approximate age

This protein is 1/3 of human protein

These are the closest relatives to Placozoans.

Low amount of cartilage may cause this.

there were animals and plants on rocks 600 mya

This makes 70% of calcified bone

Shape of Choanoflagellates

These are the 4 types of cell signaling.

first bodies developed in this time period

Integrin is this type of molecule.

This man's experiment included Disaggregated cells
of sponge.

This has no blood vessels in it.

These shapes of unicellular organisms appeared on rocks 600 may

This cell communication provides for strong adhesion.

This is the number of cells on average in a blob.

This term is used as an analogy to describe the functions of molecules like collagen, hydroxyapatite, and proteoglycan.

Collagen is dominant in this part of the body.

This is diameter of blobs.

More oxygen caused for this to happen.