Question

What is primordial utricle?
What is the shape of human red blood cell and what advantage does it have for this shape?​

Answer 1

Answer:

The red cell is adapted by lacking a nucleus—the amount of oxygen required by the cell for its own metabolism is thus very low, and most oxygen carried can be freed into the tissues. The biconcave shape of the cell allows oxygen exchange at a constant rate over the largest possible area.

Explanation:

Answer 2

Explanation:

the cytoplasmic lining of cell wall in a fully developed vacuolated cell

shape of human red blood cell is known as biconcave disk