Red blood cells have no nucleus after they have fully developed. The nucleus is ejected so that there is more room for hemoglobin. That molecule is what carries oxygen.
Because there is no nucleus the cell can not repair itself and will die in about 120 days. It's parts will then be recycled.
Red blood cells are the only functional cell with no nucleus
1) Frog's red blood cells contain a nucleus that carries all the genetic information needed to make new cells by replication. Human red blood cells contain no nuclei because they reproduce differently than frog. 2) We human have platelets in our blood but frogs do not have them.
Nuclei can vary in size depending on the type of cell. Generally, the nuclei of cells within the same species are similar in size, but there can be variations between different types of cells. Some cells, like muscle cells and some liver cells, may have multiple nuclei.
Eukariyotes have lysosomes in their cells.Prokariyotes lack lysosomes in them.
Only plant cells contain chloroplasts. NOT animal cells...
Eukaryotic cells
Red blood cells are the only functional cell with no nucleus
No, nuclei in cells are not all the same size. Nuclei can vary in size depending on the type of cell and its function.
All other cells in the human body are the only type that are prokaryotic, meaning that they do not contain a nucleus, the control center of the cell.
Organisms made of cells that contain nuclei are classified as eukaryotes. Eukaryotic cells have a well-defined nucleus that houses their genetic material within a membrane-bound organelle. Examples of eukaryotic organisms include animals, plants, fungi, and protists.
1) Frog's red blood cells contain a nucleus that carries all the genetic information needed to make new cells by replication. Human red blood cells contain no nuclei because they reproduce differently than frog. 2) We human have platelets in our blood but frogs do not have them.
Eukaryotic cells
Nuclei can vary in size depending on the type of cell. Generally, the nuclei of cells within the same species are similar in size, but there can be variations between different types of cells. Some cells, like muscle cells and some liver cells, may have multiple nuclei.
Cells that do not contain a "true" nucleus are called prokaryotes. Sometimes eukaryotic cells are anucleate(no nucleus) when mature. Erythrocytes (red blood cells) in mammals are an example of eukaryotic cells that do not contain a nucleus when mature.
The cells of eukaryotes will contain a nucleus.
plant cells
anucleated cells. Red blood cells are an example