Why do sperm cell contain large numbers of mitochondria?

During fertilization, only the sperm’s head containing its DNA will penetrate the egg and the two nuclei fuse. The sperm’s midpiece contains many mitochondria so that a supply of energy is available for the sperm to perform its function of traveling to and later fertilizing the egg.

Does sperm have endoplasmic reticulum?

There are multiple mitochondria in the middle portion of a mammalian sperm cell. They generate energy for sperm cell movement. However, sperms do not contain endoplasmic reticulum. The endoplasmic reticulum is present in all other cells except sperms.

Is ribosome present in sperm?

It is widely accepted that spermatozoa are translationally silent. Unlike 80S cytoplasmic ribosomes, 55S mitochondrial ribosomes were present in polysomal fractions, indicating that these ribosomes are actively involved in protein translation in spermatozoa.

Which cells do not have ribosomes?

Chloroplast and mitochondria are semiautonomous organelles which have their own DNA and 70S ribosomes. Golgi apparatus do not have any ribosomes.

What would happen to a cell without ribosomes?

Without ribosomes to produce proteins, cells simply wouldn’t be able to function properly. They would not be able to repair cellular damage, create hormones, maintain cellular structure, proceed with cell division or pass on genetic information via reproduction.

How the flagellum of a sperm cell contributes to sperm function?

A small middle portion of the sperm contains the mitochondria. The tail of the sperm, sometimes called the flagellum, is a slender, hairlike bundle of filaments that connects to the head and middle portion. The tail gives the sperm cell movement. It whips and undulates so that the cell can travel to the egg.

Which part of sperm contains mitochondria?

midpiece
The tip of the sperm head is the portion called the acrosome, which enables the sperm to penetrate the egg. The midpiece contains the mitochondria which supplies the energy the tail needs to move.

What are sperm explain the structure of a sperm?

Sperm is composed of a head, neck, middle piece and tail. Whole body of sperm is enclosed by plasma membrane. The head contains as enlongated haploid nucleus, the anterior portion is covered by a cap-like structure called as acrosome. This acrosome is filled with enzymes that help fertilisation of the ovum.

What is sperm made of?

Semen is a complex substance created by the male reproductive organs. The fluid is made mostly of water, plasma, and mucus (a lubricating substance). It also contains 5 to 25 calories, and is made up of small amounts of essential nutrients including: Calcium.

Which cell type does not contain ribosomes?

Prokaryotic cells are simple cells that lack membrane-bound nuclei and complex organelles. Endoplasmic reticulum, microtubules, and the Golgi apparatus are unique to eukaryotic cells, and will not be found in prokaryotes. Prokaryotes do, however, contain ribosomes, though smaller than the ribosomes in eukaryotic cells.