Learning Goal: I’m working on a biology discussion question and need an explanation and answer to help me learn.Experiment 1: Membrane Size SelectivityEnter your virtual lab here. Take a diffusion bag and a 250 mL beaker from the Containers shelf and place them onto the workbench.
Fill the bag with 45 mL of water and 5 mL of Lugol’s iodine solution from the Materials shelf.
Fill the beaker with 150 mL of water and 50 mL of 2% starch solution. Record the color of the liquid in the beaker and of the liquid in the diffusion bag to reference later.
Move the diffusion bag into the beaker.
Watch the beaker and bag for signs of color change. After 30 seconds, move the diffusion bag out of the beaker and onto the workbench. What color is the liquid in the beaker? What color is the liquid in the diffusion bag? Record your observations to reference later.
Empty the beaker and diffusion bag into the waste bin and then place the empty containers in the sink.
2-3 statement about what you believed would have happened BEFORE you conducted experiment 1. What molecules (water, iodine, starch) do you think would pass through the bag, and which ones would not. This should be your educated guess before looking at the results.
Requirements: 50-100 words
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more
Recent Comments