Calculating % diffusion in each cube: (That is, calculate total volume of the small portion of the cube that did not turn pink – use the same formula L x W x H) Calculate volume diffused = total volume – volume not pink. Calculate % diffusion = Volume diffused /total volume x 100.
sodium hydroxideWe know the sodium hydroxide diffuses into the agar cube because the cube turned purple as it entered the cube containing the phenolphthalein, an indicator of base.
The 1 cm cube was the most effective at diffusion. It had a 89% diffusion and also had the biggest difference between surface area and volume. With a 6:1 ratio.Mar 14, 2019
Why are cells so small answer sheet? Cells remain small because all materials that are exchanged between the cell and its environment, like oxygen and glucose, must pass through the cell membrane. If materials cannot be exchanged efficiently, then the cell could die.Dec 12, 2021
Diffusion occurs when molecules in an area of higher concentration move to an area of lower concentration. As hydrogen ions from the vinegar move into the agar cube, the color of the cube changes allowing you to see how far they have diffused.
Diffusion occurs when particles spread. They move from a region where they are in high concentration to a region where they are in low concentration. Diffusion happens when the particles are free to move. This is true in gases and for particles dissolved in solutions - but diffusion does not occur in solids.
The agar cubes represent biological cells. The volume of the cube correlates to the cytoplasm and the surface area of each cube to the cell membrane. All living cells are dependent on diffusion processes for survival.
Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration . Diffusion occurs in liquids and gases when their particles collide randomly and spread out. Diffusion is an important process for living things - it is how substances move in and out of cells.
rate of diffusion=amount of gas passing through an areaunit of time. The diffusion rate depends on several factors: the concentration gradient (the increase or decrease in concentration from one point to another); the amount of surface area available for diffusion; and the distance the gas particles must travel.
Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. When this happens, the cell must divide into smaller cells with favorable surface area/volume ratios, or cease to function. That is why cells are so small.
Osmosis and Diffusion Examples Plant root hairs uptaking water is another example of osmosis. Diffusion Examples: A good example of diffusion is the way perfume fills an entire room. Another example is the movement of small molecules and ions across the cell membrane.May 31, 2020
In eukaryotes, the cell cycle consists of four discrete phases: G1, S, G2, and M. The S or synthesis phase is when DNA replication occurs, and the M or mitosis phase is when the cell actually divides. The other two phases — G1 and G2, the so-called gap phases — are less dramatic but equally important.