A small cell that lacks organelles and is packed with the protein hemoglobin

The description provided seems to be referring to a red blood cell (erythrocyte). Here are the steps to reach this conclusion:

1. The cell is described as small. Red blood cells are indeed small, with a typical diameter of about 6–8 micrometers.

2. The cell is said to lack organelles. This is a key characteristic of red blood cells. Unlike most other cells, red blood cells do not contain a nucleus, mitochondria, or other organelles.

3. The cell is packed with the protein hemoglobin. Hemoglobin is the protein that allows red blood cells to transport oxygen from the lungs to the rest of the body and carry carbon dioxide from the body back to the lungs. This is the primary function of red blood cells.

Therefore, based on these characteristics, the cell in question is a red blood cell.

It seems like you're describing a red blood cell (erythrocyte). Red blood cells are small, lack organelles such as a nucleus, and are packed with the protein hemoglobin which is responsible for carrying oxygen around the body.