No, the ionosphere is found in parts of the thermosphere and the mesosphere. The ionsphere is where high-energy radiation from the sun has knocked electrons loose from atoms/ molecules, creating ions.
Answer:
The movement water or a solvent through a semipermeable membrane like the cell membrane into a solution of higher solute concentration is known as osmosis. An easy way to learn the net movement of water is that water tends to move to the hypertonic solution. In this question water will have a tendency to move out of the cell (plasmolysis).
Cells could have a higher concentration of salt inside the cell, this would require a mechanism like membrane channels that could facilitate the entrance of salts. This could be complemented with having membranes that are more permeable allowing more water to enter the cell to avoid plasmolisis.
Answer:
<u><em>Race</em></u> refers to the highly influential but mistaken identity that one or more genetic traits can be used to identify distinctive and exclusive categories of people.
Explanation:
Race refers to the discrimination of individuals depending on distinctive features such as colour etc.
The discrimination on the basis of race was very common in the past ans still be observed today in many tribes, places and countries. For example, the discrimination of the african- american race from the white americans was common in the past ans is even common today.
Answer:
A. Sodium is needed to generate an action potential.
Explanation:
Action potentials are generated by the special types of the voltage-gated channels which are embedded in the plasma membrane of the cell.
These channels are shut when the membrane potential is near zero and the voltage-gated channels open only when the membrane potential is more than the threshold voltage.
When the channels are open then they allow the flow of sodium ions which ultimately changes the electrochemical gradient which rises the membrane potential. This rise in membrane potential generates the action potential.
I believe the weight of the object can be obtained by multiplying 5 kg to the acceleration due to gravity on earth at 9.8 or about 10 m/s^2. Which is 50 Newtons. The response I believe is C.