Primary and secondary active transport refer to the movement of molecules and cell components within cells and throughout the body. Primary and secondary active transport require energy to work and are both important for delivering living creatures with the nutrients and energy they need to move and carry out basic life functions.Know More
Primary active transport, like secondary transport, starts with energy. This process begins with the movement of tiny cell molecules upward and across concentration gradients. The movement of these molecules creates friction and heat, which in turn generates potential energy across membrane surfaces. The energy produced by this movement is then stored in intracellular chemical bonds, which lie embedded in concentration gradients. This energy lies dormant until ATP arrives; the interaction of ATP with the transported energy results in the release of energy, which assumes the shape of protein as it moves across the membrane surface. Then, energy transfers from ATP to the transport protein.
Secondary active transport involves the interaction between two molecules. The process begins with the movement of a molecule down a concentration gradient, which reacts with a transport protein to move a second molecule across its concentration gradient. Then, an exchange of energy takes place between the two molecules, completing the process.Learn more about Atoms & Molecules
According to Science NetLinks, cells convert energy for your body and continually divide to make more cells for growth and repair. The body has about 200 different types of cells, and specific cells have assorted jobs to do. The various shapes of body cells depends on each cell's job.Full Answer >
Specialized cells are cells that have gone on to specialize in being in a certain part of the body, such as a skin cell. These cells generally do not replicate and simply die after their life cycle is complete. Most of the human body's cells are specialized cells, such as muscle, skin and nerve cells.Full Answer >
Epithelial cells are the cells that make up the skin and other sections of the body, such as the throat and the outside of internal organs. They protect the internal workings of the organs from the outside world.Full Answer >
Skin cells work by forming a protective layer on the body to shield it from microbes, protect it from the elements and allow the nervous system to detect sensations such hot and cold. Together, the cells of the skin combine to amass an amount of 20 square feet. There are three basic layers of the skin, including the epidermis, the dermis and the hypodermis.Full Answer >