one sperm cell
Most 99.99% of the time only one is supposed to.
The head of the sperm cell contains chromosomes, and at the leading end it has a cap, the ACROSOME, which contains enzymes necessary for the sperm cell to penetrate the female sex cell. Answer- Acrosome
white blood cells have a system they use to produce antibody that surrounds the cell with antibody to protect the cell from the virus by having the antibody come in the cell and kill it. But sometimes white blood cells just kill the infected cells. to make sure they don't spread.
All cells have a cell membrane and the cytoplasm (liquid medium). A nucleus is found in eukaryotic cells, along with various organelles such as ribosomes, vacuoles and mitochondria. Viruses have neither, and instead have a protein coat and a structure, usually a tail, that can penetrate a living cell.
There are no cells IN cells, each cell is a separate entity be it a plant cell or an animal cell.
Most 99.99% of the time only one is supposed to.
When the sperm penetrate the egg cell fertilization occurs.
Its head can use to penetrate to egg cell and tail can use to move.
there are many cells that can be derrived via hematopoesis initially you have the stem cell, it can be turned into endotheliel cells, fibroblasts, adipocytes, macrophages, dendritic cells, neutrophils, eosinophils, basophils, erythrocytes, platelets, plasma cells, b cells, T cells and monocytes
important structure of a cell is nucleus
ovum or egg cell sprem cell nerve cell red blood cell bone cell skin cell
The majority of antibodies bind secreted or membrane bound antigens and do not penetrate cells. Antibodies can be taken up into cells via endocytosis. However, a subset of autoantibodies isolated from autoimmune diseases in humans and mouse models are able to penetrate cells and bind to their antigen in the cytoplasm or nucleus (e.g. anti-DNA autoantibodies).
Well, it has a strong, not very permeable membrane. This is so the sperm cell find it harder to penetrate and only one (usually) can enter.
There are 23 chromosomes in a human haploid cell.
The head of the sperm cell contains chromosomes, and at the leading end it has a cap, the ACROSOME, which contains enzymes necessary for the sperm cell to penetrate the female sex cell. Answer- Acrosome
white blood cells have a system they use to produce antibody that surrounds the cell with antibody to protect the cell from the virus by having the antibody come in the cell and kill it. But sometimes white blood cells just kill the infected cells. to make sure they don't spread.
Yes. The sperm cells themselves can be abnormally shaped, non-motile or otherwise unable to penetrate the egg cell.