Answer:
The dialysis tubing is semi permeable in nature which means that it allows some molecules to pass through it while hinders the movement of other molecules.
<u>Process:</u>
A dialysis tube filled with water and sugar when placed in pure water will act as a setup that can depict the process of Osmosis. Sugar molecules will not be able to pass the membrane while pure water molecules will move from the area of higher concentration to the area of lower concentration (inside the dialysis tube). This is because the pure water is less concentrated while the water in dialysis tube contains more concentrated solution. This will also increase the liquid level in the dialysis tube.
<u>For example:</u> If we have a dialysis bag that is not permeable to sugar but is permeable to water and it is was placed in a
beaker full of pure water.
Suppose the bag’s initial weight was 15g but after 15 minutes the bag's weight can change upto 17 grams, why it happened is due to process of osmosis of movement of pure water into the dialysis bag.
Hope it helps!
1. Interphase: Chromosomes duplicate
2. Prophase: Chromosomes pair up
3. Metaphase: Chromosomes line up at equator
4. Anaphase: Chromatid sisters pulled apart
5. Telophase: Cells begin to divide
6. Cytokinesis: Two daughter cells are formed
Answer:
Natural selection is the application of pesticides.
Explanation:
Natural selection is a process which is non- random in which a trait increase or decrease in a population due to difference in the survival rate of a population that have that trait. So natural selection helps in the evolution of a population which is more adaptable.
Therefore when a pesticide is used against beetle many of the beetle die due to the pesticide but some beetles survived because they were having a gene that code for an enzyme that breaks down the toxin of pesticide which survived.
So nature selected those individuals who have genes that allow them to survive in changing and adverse conditions. So these selected individuals will reproduce and pass their genes to their offspring and increase in number.
Therefore by natural selection, more pesticide-resistant beetle will be produced and so more amount of pesticide should be needed to kill the beetles.
Answer:
False
Explanation:
phenotype is the set of observable characteristics or traits of an organism