Question

which of the following types of cells are anucleate when mature? a liver cells b skin cells c erythrocytes (red blood cells) d skeletal muscle cells

Explanation:

To determine which cells are anucleate (without a nucleus) when mature, we analyze each option:

• Option A: Liver cells are nucleated and have a nucleus throughout their life.
• Option B: Skin cells (e.g., keratinocytes) are nucleated, especially in the lower layers of the epidermis.
• Option C: Erythrocytes (red blood cells) lose their nucleus during maturation to make more space for hemoglobin, which is essential for oxygen transport. So, mature erythrocytes are anucleate.
• Option D: Skeletal muscle cells are multinucleated (have multiple nuclei) and are not anucleate.

Answer:

C. Erythrocytes (red blood cells)