A. They live in the polar regions of the Northern and Southern Hemispheres.
The body of Micro class species like bacteria is formed of a single cell; these organism are described as unicellular. In a unicellular organism, all life activities are carried out by itself with its internal structures.
The intracellular structures are called the organelles. These apecies generally live for a short life span because of all the ondependant effort to survive. An injury can cause death to this organism
In the vast majority of plants and animals, the body is made up of numerous cells. They are called multicellular organisms. A multicellular organism is actually an aggregation of cells.
Here a group of cells functions in a same way to form a tissue or an organ (Example: Xylem vessels, cork cells, cells in the skin).
Multicellular organisms have a great capacity to survive than unicellular organisms. They live for a long span of time and injury or death to some cells does not cause immediate consequences as the cells can easily be replaced
- Salamanders, like the Mexican axolotl, are a number of the few vertebrates fortunate in their ability to regenerate diverse structures after injury. Unlike mammals they're ready to regenerate a totally functional neural structure after injury.
- However, the molecular circuitry required to initiate a pro-regenerative response after medulla spinalis injury isn't well understood. to handle this question we developed a neural structure injury model in axolotls and employed in vivo imaging of labeled ependymoglial cells to characterize the response of those cells to injury.
- Using in vivo imaging of ion sensitive dyes we identified that neural structure injury induces a rapid and dynamic change within the resting membrane potential of ependymoglial cells. Prolonged depolarization of ependymoglial cells after injury inhibits ependymoglial cell proliferation and subsequent axon regeneration.
- Using transcriptional profiling we identified c-Fos as a key voltage sensitive early response gene that's expressed specifically within the ependymoglial cells after injury. This data establishes that dynamic changes within the membrane potential after injury are essential for regulating the particular spatiotemporal expression of c-Fos that's critical for promoting faithful medulla spinalis regeneration in axolotl.
To learn more about membrane depolarization from the given link
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It would be called an energy pyramid. Also known as a trophic level pyramid. It shows the producers, the trees, then the primary consumer, the deer, then the secondary consumer, the tigers.
We should conserve and find alternative for non - renewable energy,Because we could run out of non renewable energy soon.
<u>Explanation:</u>
- Non-renewable resources required to be saved, as these resources are limited in supply and availability on the globe.
- If non-renewable sources are not conserved they will pass during using.
- Whenever you conserve power, you not only conserve cash, you also decrease the need for such specimen sources as coal, oil, and biogas.
- Switching to renewable energy such as wind or solar energy can conserve money, and conserve on non-renewable power sources and the atmosphere.
