Gcse Biology Coursework Osmosis Help

But what if the cell wants to bring in a molecule which is already present in high concentration inside the cell ? So now we can describe active transport as the process in which substance are absorbed against the concentration gradient (or we can say substance move from a region of lower concentration to a region of higher concentration) with the help of an enzyme. Active transport takes place both in animal cells and plant cells.

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Some strips might have 'skins.' These would act as a barrier to reduce the rate of osmosis. Inconsistent blotting might lead to some strips being left with more excess water than others. potato skin could be left on affecting the results when blotting the chips after osmosis, theres a risk of forcing water out of the cells, affecting the change in mass I forgot the rest lol, need to look over my notes.

In order to overcome this you could blot them gently and consistently in circular motions. potato skin could be left on affecting the results when blotting the chips after osmosis, theres a risk of forcing water out of the cells, affecting the change in mass I forgot the rest lol, need to look over my notes.

Glucose molecules are produced in lumens when food is digested.

Now that the concentration of glucose molecules in the lumen is much lower than that in the cells, they are transported inside the cells by active transport against the concentration gradient.

All metabolic processes like Photosynthesis, Respiration etc in the living organisms involve movement of substance in and out of the cells.

The substance move in and out of the cell either by Active Transport or Passive Transport.After completing a Masters degree in Automotive Engineering with Motorsport, Will now works at Mc Laren designing super cars. A 20 page pack of worksheets that have been produced for use in Key Stage 4.These ions are then moved to xylem vessels and eventually the leaves where chlorophyll production takes place.Hence, we can say that active transport is critical in both plants and animal cell and also in both the examples the cell contained mitochondria as mitochondria is the site of respiration and active transport requires energy from respiration.Find me at: Will created Ask Will back in 2010 to help students revise and bloggers make money developing himself into an expert in PPC, blogging, and online marketing.He now runs others websites such as Poem and Restoring .Now you must be wondering, technically the ions or molecules move from higher concentration to lower concentration through the process of diffusion but here it is moving into higher concentration.As we can see in the diagram above the cell membrane has a high concentration of particles on one side and a low concentration of particles on the other side. Generally the ions and molecules travel from a region of higher concentration to a region of lower concentration.Control the volume of solution used for each strip. Disclaimer: This work has been submitted by a student.

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