How are red blood cells able to move through narrow vessels to carry oxygen throughout a multicellular organism? (1 point)

Question

Responses

They are small because their organelles are smaller than those of other cells.
They are small because their organelles are smaller than those of other cells.

They are small because they lack a nucleus.
They are small because they lack a nucleus.

They are flexible because they lack a plasma membrane.
They are flexible because they lack a plasma membrane.

They are long and thin with a tail-like end.

Answer 1

The correct response is:

They are small because they lack a nucleus.

This feature allows red blood cells (erythrocytes) to have a biconcave shape, making them more flexible and enabling them to easily move through narrow vessels to carry oxygen throughout the organism.