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The greatest concentration of radioactivity in a cell typically occurs in the nucleus, where DNA is located. This is because DNA is a primary target for radiation damage, and any radioactive materials or isotopes introduced into the cell are often taken up by the nucleus. Additionally, certain types of radioactive isotopes may accumulate in specific cellular organelles, but the nucleus generally remains the focal point for radiological effects.
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Where is the greatest concentration of water if a red blood corpuscle is placed in sea water?
The greatest concentration of water in this scenario would be inside the red blood corpuscle. Sea water is a hypertonic solution compared to the inside of the cell, meaning it has a higher concentration of solutes. Water would flow out of the cell into the sea water in an attempt to equalize the concentration, causing the cell to shrink.
Which cell component would first show an increase in radioactivity?
The nucleus would first show an increase in radioactivity as it contains the genetic material of the cell, and radioactivity affects DNA.
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.
What if a cell has a lower concentration outside the cell?
There are two basic ways that individual molecules can enter (or leave) a cell.1. Diffusion. This is the movement of particles from a region of high concentration to a region of low concentration. So if the concentration of the molecule is higher outside the cell it can enter by diffusion. However diffusion can only take place down a concentration gradient ie from a high to a low concentration.2. Active transport. This is the movement of particles against their concentration gradient (ie from a low to a high concentration), using energy provided by the cell (ie ATP produced by respiration). So if a molecule is at a higher concentration inside the cell it can only be absorbed by active transport.
What does a difference in concentration in a cell create?
a concentration gradient
Where is the greatest concentration of water if a red blood corpuscle is placed in sea water?
The greatest concentration of water in this scenario would be inside the red blood corpuscle. Sea water is a hypertonic solution compared to the inside of the cell, meaning it has a higher concentration of solutes. Water would flow out of the cell into the sea water in an attempt to equalize the concentration, causing the cell to shrink.
Which cell component would first show an increase in radioactivity?
The nucleus would first show an increase in radioactivity as it contains the genetic material of the cell, and radioactivity affects DNA.
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.
How does solute concentration affect diffusion osmosis?
Solute concentration affects diffusion and osmosis by creating a concentration gradient. Higher solute concentration outside the cell will cause water to move out of the cell, leading to a decrease in cell volume. Lower solute concentration outside the cell will cause water to move into the cell, increasing its volume.
What is the difference in chloride concentration inside and outside the cell?
The chloride concentration is higher outside the cell than inside the cell.
What if a cell has a lower concentration outside the cell?
There are two basic ways that individual molecules can enter (or leave) a cell.1. Diffusion. This is the movement of particles from a region of high concentration to a region of low concentration. So if the concentration of the molecule is higher outside the cell it can enter by diffusion. However diffusion can only take place down a concentration gradient ie from a high to a low concentration.2. Active transport. This is the movement of particles against their concentration gradient (ie from a low to a high concentration), using energy provided by the cell (ie ATP produced by respiration). So if a molecule is at a higher concentration inside the cell it can only be absorbed by active transport.
What does a difference in concentration in a cell create?
a concentration gradient
The concentration of potassium ions inside the cell is usually what?
The concentration of potassium ions inside the cell is typically higher than it is outside the cell. This concentration gradient is maintained by the sodium-potassium pump, which actively transports potassium ions into the cell. This imbalance in potassium concentration is important for various cellular processes, such as maintaining the cell's resting membrane potential.
As the concentration of molecules outside a cell increases more molecules will enter the cell?
Yes, this process is known as osmosis. Water moves from an area of low solute concentration (outside the cell) to an area of high solute concentration (inside the cell) to balance the concentration levels. This causes more molecules to enter the cell as the concentration difference increases.
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?
Water will move out of the cell in an attempt to equalize the concentration of dissolved substances, causing the cell to shrink or shrivel up. This process is known as crenation, and can have negative effects on the cell's functioning.
What kind of environments causes water to enter or leave the cell?
Water Movement across a cell membrane is called Osmosis. And it is dependent on the concentration of ions on each side of the cell membrane. If the concentration is higher on the inside of the cell water rushes in to dilute the ion concentration and get it to equal the outside concentration of ions and this is called hypotonic. If the concentration is higher outside the cell water will rush out of the cell to help dilute the concentration outside the cell and get the two concentrations to become equal and is called hypertonic. If the concentration is equal in both outside and inside the cell there will be no water movement and is called isotonic. Osmosis
