Erythrocytes swell or shrink rapidly in response to changes in the osmolarity of the blood by moving water molecules through plasma membrane channels call aquaporins (aqp). aqp1 is a tetramer that consists of four identical monomers, each of which has a transmembrane pore. a human erythrocyte has approximately 2 × 105 aqp1 monomers and a total volume of 5 × 10–11 ml. water molecules flow through the plasma membrane at a rate of 5 × 108 molecules per aqp1 tetramer per second.
calculate the number of water molecules in an erythrocyte. assume that the erythrocyte consists entirely of water. calculate the amount of time that it takes for the erythrocyte to lose half of its volume of water when it encounters the high osmolarity (1 m) in the interstitial fluid of the renal medulla.
Solved
Show answers
More tips
- S Sport How to Learn Swimming? Simple Tips for Beginners...
- P Photography and Videography Understanding HDR: How It Works and Why You Need It...
- G Goods and services Which TV is better - LCD or Plasma?...
- S Sport How to Learn to Pull Up on Monkey Bars?...
- L Leisure and Entertainment Scrapbooking: What is it and Why is it Becoming More Popular?...
- C Computers and Internet Where did torrents.ru move to?...
- B Business and Finance Understanding Cash Flow: What It Is and How It Works...
- C Computers and Internet What Are Peers and Seeds in Torrenting?...
- H Health and Medicine 10 Simple Techniques on How to Boost Your Mood...
- G Goods and services How to Choose the Right High Chair for Your Baby?...
Answers on questions: Chemistry
- C Chemistry In a closed flask, sulfur dioxide and oxygen react to produce sulfur trioxide. 2so2(g) + o2(g) 2so3(g) in a graph of reaction rate versus time, what is occurring in...
- C Chemistry In a closed container, nitrogen gas and hydrogen gas react to produce ammonia. n2(g) + 3h2(g) 2nh3(g) which statement describes the graph of concentration versus time...
- C Chemistry Aliquid is placed in an evacuated, sealed flask. when will this closed system reach dynamic equilibrium? when all of the liquid has evaporated to form a vapor when...
- C Chemistry Two glass jars a ana b are filled with carbondioxide and oxygen respectively.in each jar a lightened candle is placed simultaneously. in which jar the candle remain...
- C Chemistry The brain, spinal cord, and nerves work together to carry out a specific function. Together, these organs compose a(n)...
- C Chemistry Which of the following CANNOT be classified as a substance? A. table salt B. air C. nitrogen D. gold...
- C Chemistry Which of the following is an INTENSIVE physical property?* O Produces 6.7kj/mol of heat. Mass of 5.5grams Density of 2.6g/ml O Reactive with Oxygen...
- C Chemistry Given: 0.400 mol LiNO3 : g of LiNO3 : mol of oxygen atoms : g N atoms...
- C Chemistry A spontaneous reaction: A. goes forward under the given set of conditions B. goes forward only at room temperature and only if it is exothermic C. does not go forward...
- C Chemistry Term given to describe the 2 name naming system is...
Ответ: