Answer: True
Explosions linked to electricity happen when electric current interacts with air, resulting in energy transfer from electricity to the air. The electrical energy acts as a trigger, exciting the air molecules and leading to an explosion. An explosion is characterized as a quick event involving the release of energy in gaseous form alongside the destruction of nearby structures. For an explosion, both the right fuel and combustion gases are essential. Fuels like methane and natural gases are used, while oxygen plays a crucial role in facilitating the combustion of these fuels.
The active site of the enzyme accommodates a substrate. This leads to the formation of an enzyme-substrate complex as the enzyme binds with the substrate. Subsequently, a chemical reaction takes place where new substances, referred to as products, are generated.
A. Adding phosphate groups to target proteins. Explanation: CDKs, or cyclin-dependent kinases, play a crucial role in managing the cell cycle by interacting with cyclins, the regulatory proteins that activate them. The activity of different Cdks fluctuates during the cell cycle. When a specific CDK binds with its corresponding cyclin, a cyclin-Cdk complex forms, which is responsible for phosphorylating target proteins. This process can activate some proteins while inhibiting others — for example, phosphorylation leads to the degradation of p27, a key inhibitor of cell division, which subsequently allows non-dividing cells to begin division.
