Answer: 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.
Bacterial cells pick up free pieces of DNA from the medium-pieces that were released from dead bacteria-in a process called<span>. transformation.</span>
Answer:
Because of using fossil fuels nowadays it is used to air pollute the earth causing global warming.
Explanation:
Why did the narrator use the phrase “fit together like puzzle pieces” to describe how the cells of a developing human embryo form a human face
