Which of these statements about erythrocytes is true?

Question

Quizplus · Accepted Answer

Erythrocytes, also known as red blood cells, are shaped like biconcave disks. This shape allows for maximum surface area for the diffusion of gases, such as oxygen and carbon dioxide.

Option A is incorrect, as erythrocytes in adult humans do not have nuclei. They lose their nuclei during maturation in order to make more room for hemoglobin.

Option B is incorrect, as the main function of erythrocytes is to carry oxygen to tissues and remove carbon dioxide from them. While they do transport some nutrients, such as glucose or amino acids, this is not their primary function.

Option D is incorrect, as each erythrocyte actually contains about 280 million molecules of hemoglobin. This high number is necessary for efficient transport of oxygen.

Which of These Statements About Erythrocytes Is True