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Why radioactivity is considered as a first order reaction?
Radioactivity is the disintegration of the substance by its own. This means disintegration depends only on one reactant concentration i.e.,on itself. So this is a first order reaction.
Which cell component would first show an increase in radioactivity?
endoplasmic reticulum
Which ions electrical charges oppose the direction of movement that is caused by their concentration gradient?
Any ion that is positive but has a higher concentration inside the cell or is negative and has a higher concentration outside the cell. Any ion that is positive but has a higher concentration inside the cell or is negative and has a higher concentration outside the cell.
What does a difference in concentration in a cell create?
a concentration gradient
What different solutions can cells be in and what happenes to them?
There are three different types of solutions you can place a cell in: hypotonic (concentration of solution less than concentration of cell), isotonic (equal concentrations) and hypertonic (concentration of solution greater than concentration of cell). In a hypotonic solution, the cell will accumulate water (in an attempt to equalize the concentration difference) and will eventually rupture from the water pressure inside the cell. In an isotonic solution, the cell will do nothing. In a hypertonic solution, the cell will shrivel as the water exits the cell to dilute the solution to the same concentration as the cell. This will cause the cell to die.
History of radioactivity?
Not sure what the question is asking but yes there is little radioactivity in cell phones and TVs car pretty much anything electronics.
Why radioactivity is considered as a first order reaction?
Radioactivity is the disintegration of the substance by its own. This means disintegration depends only on one reactant concentration i.e.,on itself. So this is a first order reaction.
Which cell component would first show an increase in radioactivity?
endoplasmic reticulum
The concentration of potassium ions inside the cell is usually what?
The concentration of potassium ions inside the cell is usually MORE THEN then the concentration of potassium.
Which ions electrical charges oppose the direction of movement that is caused by their concentration gradient?
Any ion that is positive but has a higher concentration inside the cell or is negative and has a higher concentration outside the cell. Any ion that is positive but has a higher concentration inside the cell or is negative and has a higher concentration outside the cell.
What does a difference in concentration in a cell create?
a concentration gradient
What is isotonic concentration?
Isotonic concentration is when the concentration of soletutes inside and outside of the cell are equal in concentration
What different solutions can cells be in and what happenes to them?
There are three different types of solutions you can place a cell in: hypotonic (concentration of solution less than concentration of cell), isotonic (equal concentrations) and hypertonic (concentration of solution greater than concentration of cell). In a hypotonic solution, the cell will accumulate water (in an attempt to equalize the concentration difference) and will eventually rupture from the water pressure inside the cell. In an isotonic solution, the cell will do nothing. In a hypertonic solution, the cell will shrivel as the water exits the cell to dilute the solution to the same concentration as the cell. This will cause the cell to die.
What happens when the concentration of dissolved substances is greater outside the cell than inside?
Particles always move from an area of high concentration to an area of low concentration. Therefore, if the concentration of dissolved substances is greater outside the cell, they will travel into the cell until there is an equal concentration of the substance on both sides of the cell wall.
There is a greater concentration of na plus and there is a greater concentration of k plus in the cell?
There is a greater concentration of Na plus outside and there is a greater concentration of K plus inside the cell. When the stimulus is delivered, the permeability of the membrane is changed, and Na plus diffuses into the cell, initiating the depolarization of the membrane.
Which substance in plants and animals could be examined for radioactivity to test his hypothesis?
The substance in plants and animals that could be examine for radioactivity to test its hypothesis in the cell of the plant or animal.
What equipment to measure radiation from sodium chloride?
The isotope 22Na is radioactive but the concentration is extremely low. A measure of the radioactivity is not necessary.
