why do sperm cells have many mitochondria

Eggs (ova) and sperm have half the number of chromosome One of the rod shaped bodies found in the nucleus of cells that contain genetic information (DNA). of normal body cells. They are called
haploid cells rather than diploid An organism or cell that contains two copies of each chromosome. cells. A single egg cell is called an ovum. Collectively, eggs and sperm are called gametes or sex cells. When fertilisation occurs, an egg (ovum) and a sperm fuse to form a zygote. Eggs and sperm have several important adaptations linked to their structure. An egg cell (ovum) is one of the largest cells in the human body and can just be seen without using a microscope. Each egg cell has a haploid nucleus - containing only half the number of chromosomes of a normal cell nucleus. It has a large cytoplasm which contains the nutrients and mitochondria Structures in the cytoplasm of all cells where respiration takes place (singular is mitochondrion). needed for mitosis (cell division) after fertilisation.


And each egg has a special cell membrane which only allows one sperm to fertilise it. Each sperm cell also has a haploid nucleus. It has a tail (for motility The ability to move from one place to another. ) which propels it through the cervix In a human, the cervix is the neck of the womb, where the vagina joins the uterus. , uterus Also known as a womb. This is where the fertilised egg (ovum) develops. and fallopian tube The tube leading from the ovary to the uterus. towards the egg. And each one has many mitochondria (where respiration Chemical change that takes place inside living cells, which uses glucose and oxygen to produce the energy organisms need to live. Carbon dioxide is a by-product of respiration. occurs) to release the energy needed for its journey. Sperm cells also have special enzyme Proteins which catalyse or speed up chemical reactions inside our bodies.


Enzymes are a vital in chemical digestion of food in the gut. , called acrosomes, which allow them to break through the cell membrane of the egg. Schematic diagram of a sperm cell, showing the (1) acrosome, (2) cell membrane, (3) nucleus, (4) mitochondria, and (5) flagellum (tail)  A sperm cell, or sperm atozoon, is the haploid cell that is the male gamete. It is carried in fluid called semen, and is capable of fertilising an egg cell to form a zygote. A zygote can grow into a new organism, such as a human. Sperm cells contain half of the genetic information needed to create life. Generally, the sex of the offspring is determined by the sperm with the chromosomal pairs "XX" and "XY". Sperm cells were first observed by Antoni van LeeuwenhoekAnton van Leeuwenhoek ( October 24, 1632 August 26, 1723) was a tradesman and scientist from Delft, in the Netherlands. He is best known for his contribution to improvement of the microscope and his contributions towards the establishment of cell biology. in 1679Events January 24 King Charles II of England disbands Parliament August 7 The brigantine Le Griffon which was commissioned by Rene Robert Cavelier, Sieur de La Salle, is towed to the southern end of the Niagara River, to become the first ship to sail the.   1 Sperm structure and size  Individual spermatozoa are highly differentiated cells, composed normally of a head, basal body (or midpiece), and tail.


The head contains some cytoplasmCytoplasm is the viscid, semifluid matter contained within the plasma membrane of a cell that helps to hold the cell together. In contrast to the protoplasm, however, the cytoplasm does not include the cell nucleus. The watery or aqueous component of the and the nuclear material for fertilization. The basal bodyA basal body is a short cylindrical array of microtubules plus their associated proteins found at the base of a eukaryotic cell cilium or flagellum.


Serves as a nucleation site for the growth of the axoneme. Closely similar in structure to a centriole. contains a large concentration of mitochondria that provide the energy for sperm motility through the production of ATP. The spermatozoan tail is typically a flagellum used for propulsion.  In humans, sperm cells consists of a head 5 em by 3 em and a tail 50 em long. The tail flagellates, which propels the sperm cell. The cell is characterized by a minimum of cytoplasm.   2 Sperm production  Main article: Spermatogenesis  Sperm are produced in the seminiferous tubule s of the testes in a process called spermatogenesis. Round cells called spermatogonia divide and differentiate eventually to become sperm. During sexual intercourse the sperm is deposited in the vagina - and then it moves to the ovum.    http://www. economicexpert. com/a/Sperm. htm   http://WorkAtHomeSimple. com 

  • Views: 89

why do we need to classify living things
why do sperm and egg go through meiosis
why is the sequence of bases in dna important
why is prophase the longest phase in mitosis
within a typical human cell which number is the greatest