Red blood cells in mammals ____.
A) have a large nucleus when they enter circulation
B) do not have a nucleus when they enter circulation
C) are the only cells to lack hemoglobin
D) develop in the yellow marrow
E) function as part of the immune system

Question

Red blood cells in mammals ____.​
A) have a large nucleus when they enter circulation​
B) ​do not have a nucleus when they enter circulation
C) ​are the only cells to lack hemoglobin
D) ​develop in the yellow marrow
E) ​function as part of the immune system

Quizplus · Accepted Answer

Red blood cells in mammals do not have a nucleus when they enter circulation, allowing more space for hemoglobin, which is essential for oxygen transport.

Red Blood Cells in Mammals ____.​

Red Blood Cells in Mammals ____.