A root hair cell has a large surface area that is ideal for absorbing nutrients, and its sap has a higher salt concentration than the surrounding soil water. It has a semipermeable membrane that permits minerals and water molecules to enter but not to leave. Since it is responsible for providing nutrition and water to the plant, it possesses a tough wall that allows it to go deep underground.
A root hair cell is a very tiny extension of the root hair and is invisible to the unaided human eye. It grows from the tip of the root hair, has a diameter of between 10 to 17 micrometers and a length of 100 to 1500 micrometers. Its large surface area speeds up the absorption of water and nutrients through diffusion.
Root hair cells are continually formed at the tip of the root and stay alive for two to three weeks before dying. In legume plants, root hairs are involved in the formation of root nodules. After absorbing water and nutrients, the root hair cells pass these nutrients to the root of the plant for transportation to all its other parts. The root hair cell has five organelles, including the nucleus, plasma membrane, cytoplasm, vacuole and cell wall. It is protected by a strong wall, which also gives it its shape.Learn More
The sperm cell has primarily adapted to its intended function through a variety of anatomical changes. One of the most crucial adaptations that sperm have evolved is their flagella, which propel them as they travel toward unfertilized ova. According to “Molecular Biology of the Cell,” sperm have also lost a number of organelles because such organelles are not necessary for their functioning.Full Answer >
A lysosome is an organelle in an animal cell that contains enzymes to break down outside materials that enter the cell, as well as obsolete cell material. The lysosome acts as the digestive system for the cell, consuming proteins, carbohydrates and lipids.Full Answer >
The function of a galvanic cell is to produce electricity through an oxidation-reduction reaction. Galvanic cells are used in batteries to convert chemical energy to electrical energy. Another name for a galvanic cell is a voltaic cell.Full Answer >
A cell membrane protects the structures within the cell. Cell membranes are semipermeable, meaning that only certain objects are able to pass through them. Cell membranes also give shape to the cell and support its structure.Full Answer >