Enter 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.
Biopsychology 5
We discussed two very different topics in this module: eating disorders and sexual differentiation. For this extra credit reflection, you can reflect on eating disorders, sexual determination, disorders of sex development, or another topic. Alternatively, you can can think about how two of these topics might intersect. For example, how do eating disorders impact people of various genders, with various gender identities, and with various sexual identities. Of course you can reflect in any way you want. These topics intersect with other issues like race and culture too. The politics of these issues cannot be ignored either!
Lab Write-Up Hypothesis – Diffusion and Osmosis (Experiment 1)
Biology Assignment Help Experiment 1: Membrane Size Selectivity
Enter 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.
I need help with my bio homework please
Please click read the article and use to answer the questions below. (Links to an external site.)
You can also copy and paste the URL: https://www.pnas.org/content/105/46/17867 (Links to an external site.)
Click the link to view the slug in action. (Links to an external site.)
Instructions
Part 1
Read the Abstract carefully, then the Introduction. Look at the pictures and read the captions. Read the Results. Scan the Methods. Do you need to understand everything? No!!!
Try to figure out the general idea of the paper, what are the authors trying to say? Do you believe them with the data they present?
Part 2
Answer the following questions. Please type your response and submit as a PDF to Canvas:
What are the two hypotheses? Which of these hypotheses was supported?
Briefly describe the data used to support this hypothesis?
Why is the sea slug green?
How does this research support the theory of endosymbiosis?
Describe how this is a case of lateral gene transfer.
Use the supplemental figure below to describe the origin of the plastid in Elysia chlorotica. What level of endosymbiosis is this? What evidence is there to support this? This image is found in the supplemental information PDF from the paper.
**Choose one article used as a reference for this paper. You can fins these resources at the end of the paper. Write a paragraph to summarize the article or describe something new that was discovered.