Channel proteins that form a narrow passageway in gap junctions are known as <span>connexons
</span><span>Connexons are assemblies of six proteins that form a pore or a narrow passageway between the cytoplasm of two adjacent cells.
These passageways allow the bidirectional passage of iron and signals between the cells. </span>
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D) thr cell will become cancerous
As Earth rotates, the Moon's gravity causes the oceans to seem to rise and fall. (The Sun also does this, but not as much.) There is a little bit of friction between the tides and the turning Earth, causing the rotation to slow down just a little. As Earth slows, it lets the Moon creep away.
Circulatory is the body system
Two little dots at the end of Planaria are called eye-spots.
<span>Eye-spots (also known as ocelli) have a role in the vision of Planaria. The eye-spots have a possibility to detect the intensity of light and are used to move away from light sources.</span>