3. (into the a. Water will flow cell, out of the cell, in both directions). 95% NaCI 5% H2O 5% NaCI 95% H2O (shrink, b. The cell will burst, stay the same). 4. At which solution of concentration gradient is each cell diagram? (Hypotonic, Hypertonic, Isotonic) e molecd molecule O• 0 • Oe O olo o lo . O O o. odo . odo olo O. O Hypeonie a. b. C. 5. This diagram is moving from a high to a low concentration: MOVEMENT OF WATER MOLECULES 6. Using a transport protein to move particles across the membrane: 7. Describe the processes occurring in the following pictures: ho ++ +++++ ++ + HIGH LOW ++

The cell membrane is permeable to water but not to ions.  Select all that apply. Question options:   Beaker A is isotonic to the cell.    Some water in cell A is moving in and out of the cell.    There is a net movement of water into Cell B.    Beaker C is hypotonic to Cell C.

6. As a demonstration, an artificial cell consisting of an aqueous solution enclosed in a semi permeable membrane is placed into a beaker containing a different solution. The membrane is permeable to water and to monosaccharide's glucose and fructose but completely impermeable to the disaccharide sucrose. The concentration of each cell is described in the diagram below. 0.03M Sucrose 0.02M Glucose 0.01M Sucrose 0.01M Glucose 0.01M Fructose a. Which solute(s) will exhibit a net diffusion into the cell? Explain. b. Which solute(s) will exhibit a net diffusion out of the cell? Explain. C. Which solution is hypertonic, the cell or the solution? Explain.

Osmosis is a kind of passive transport, that O Both a and b O Does not need to energy Need to energy

Thinking about different osmotic conditions, which of the following statements is NOT true. Select one: a.If a cell contained 98% water and was placed into a solution of 100% water, water would flow into the cell. b.Under hypertonic conditions a bacterial cell would still look whole and intact under a light microscope c.None of the Above d.Based on their cell wall, one would expect a gram positive bacteria to lyse before a gram negative in extreme hypotonic solutions. e.A red blood cell will quickly lyse under hypotonic conditions compared to a bacterial cell

1. Which of these compounds will cross the cell membrane without the aid of a membrane transport protein, and why? H3 NH NH 2. By what transport process will the above compound be transported? What are the factors which drive movement across the membrane in this process? Does this process require input of energy?

6- One of the following is an example about the secondary active transport: a- Glucose/ Na* C- H/k b- Kt/Nat d- None of the above

11. Which is true based on the diagram?

O O 8:12 r cdn.fbsbx.com Receptor-mediated endocytosis A specific receptor protein on the plasma membrane recognizes an extracellular molecule and binds with it. a. Describe the net movement of water by drawing arrows on the diagram. (3 points each) b. Tell whether the solutions are isotonic, hypertonic or hypotonic. Label each picture. (3 points each) c. What kind of transport is shown in the diagram above? Is it active or passive transport? Explain why? (10 points) d. What will happen to cells "A", "B" and "C" after a period of time has passed? (3 points each) 60% water 40% salt The reaction stimulates the membrane to indent and create a vesicle containing the selected molecule. 40% water 60% salt SEAT WORK 40% water LTE 70% water 30% salt 80% water 20% salt Done 70% water 30% salt 70% water 30% salt 9

4. In this cartoon, imagine that Romeo is a potassium ion (K+) and Juliet is a sodium ion (Na+). Explain why they're stuck on their own sides of the membrane and what they need to get through it. The Paramecium Parler Wherefore art thou, Ramea?! Star-crossed solutes I'm stuck behind this semipermeable membrane! Ambe Sites