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Differentiate open system to closed system in the ecosystem?

A closed system maintains itself on a limited amount of resources that are entrenched in that particular system. Energy can be exchanged with other systems, but not any actual matter. Therefore, some of what goes on in the environment is considered a closed system, but not a whole lot. Open systems are much more common. In an open system, necessary resources are renewed and exchanged on a regular basis. Many ecosystems, for example, rely on the sun to constantly import energy into their basic cycles. Then there's a limited amount of nutrients to go around -- such as carbon, nitrogen and phosphorous -- and they're constantly cycled around. Some common cycles include the hydrological cycle, rock cycle and the carbon cycle. http://curiosity.discovery.com/question/difference-closed-open-system


What site regulates what goes down in and out of the cell?

The plasma membrane regulates what goes in and out of the cell. It is a selectively permeable barrier that controls the movement of substances such as ions, nutrients, and waste products in and out of the cell.


How do proteins enter the mitochondria and what is the process involved?

Proteins enter the mitochondria through a process called protein import. This involves the recognition of specific targeting signals on the protein by receptors on the mitochondrial outer membrane. The protein is then guided through channels in the outer and inner membranes of the mitochondria, with the help of protein translocases, to reach its final destination within the organelle.


Is it illegal to own a bonsai tree outside of china?

No, it is not illegal to own a bonsai tree outside of China. Bonsai trees are cultivated and enjoyed by hobbyists around the world. However, there may be regulations regarding the import and export of plants across borders, so it's important to check the laws in your specific location.


When you join two glucose molecules you get maltose what is the molecular structure of maltose?

Maltose is a disaccharide composed of two glucose units linked by an alpha-1,4-glycosidic bond. This bond results in a structure where one glucose unit is in a straight chain and the other is in a ring form.