Examlex
A number of systems for pumping ions across membranes are powered by ATP. Such ATP-powered pumps are often called ATPases, although they don't often hydrolyze ATP unless they are simultaneously transporting ions. Because small increases in calcium ions in the cytosol can trigger a number of different intracellular reactions, cells keep the cytosolic calcium concentration quite low under normal conditions, using ATP-powered calcium pumps. For example, muscle cells transport calcium from the cytosol into the membranous system called the sarcoplasmic reticulum (SR) . If a resting muscle cell's cytosol has a free calcium ion concentration of 10-7 while the concentration in the SR is 10-2, then how is the ATPase acting?
Relationship
The way in which two or more concepts, objects, or people are connected, or the state of being connected.
Rainbow Warriors
An informal or colloquial term that can refer to environmental activists, especially those associated with Greenpeace, or to individuals fighting for LGBTQ+ rights.
NASCAR Team
A group or organization that competes in the National Association for Stock Car Auto Racing, consisting of drivers, crew members, and other supporting personnel.
Reward System
A reward system is a set of mechanisms or structures within an organization designed to motivate and compensate employees through financial and non-financial rewards.
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