Biology Forums - Study Force

Biology-Related Homework Help Anatomy and Physiology Topic started by: keith0125 on Jun 29, 2011



Title: A&P Exercise 1
Post by: keith0125 on Jun 29, 2011
Need help with Exercise 1


Title: Re: A&P Exercise 1
Post by: lena213 on Jun 29, 2011
 :hey: Hi welcome to the forum! Here is a start to the assignment
Simple Diffusion
Activity 1: Simulating Simple diffusion

      1.What is the molecular weight of Na+? 22.9
      2. What is the molecular weight of Cl-? 35.45
      3. Which MWCO dialysis membranes allowed both of these ions through? 50, 100, and 200
      4. Which materials diffused from the left beaker to the right beaker? Urea, NaCl and glucose diffused
        5. Which did not? Why? Albumin, because the molecular weight exceeded the highest MWCO membrane, thus being to large to pass through

Activity 2: Simulating Dialysis

      1. What happens to the urea concentration in the left beaker (the patient)? It is reduced to 50% travels to the right beaker and reaches equilibrium at 17 minutes
      2. Why does this occur? Because the more concentrated it became it causes the molecules to move down



Title: Re: A&P Exercise 1
Post by: keith0125 on Jun 29, 2011
Thanks I still need help with the rest of the assignment I will take any help I can get  :thi:


Title: Re: A&P Exercise 1
Post by: bio_man on Jul 2, 2011
Thanks for helping, Lena!


Title: Re: A&P Exercise 1
Post by: lena213 on Jul 5, 2011
Anytime  :)


Title: Re: A&P Exercise 1
Post by: victoriaw on Jul 28, 2011
Thanks for this information!
Simple Diffusion
Activity 1: Simulating Simple diffusion

      1.What is the molecular weight of Na+? 22.9
      2. What is the molecular weight of Cl-? 35.45
      3. Which MWCO dialysis membranes allowed both of these ions through? 50, 100, and 200
      4. Which materials diffused from the left beaker to the right beaker? Urea, NaCl and glucose diffused
        5. Which did not? Why? Albumin, because the molecular weight exceeded the highest MWCO membrane, thus being to large to pass through

Activity 2: Simulating Dialysis

      1. What happens to the urea concentration in the left beaker (the patient)? It is reduced to 50% travels to the right beaker and reaches equilibrium at 17 minutes
      2. Why does this occur? Because the more concentrated it became it causes the molecules to move down