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1. Channel proteins used for the bulk passage of water molecules across the cell membrane?
2. The tonicity of the extracellular fluid that maintains the turgid appearance of plant cells?
3. The tonicity of the extracellular environment causing plasmolysis of plant cells?
4. Plant cells are said to be flaccid in this type of cellular environment or solution?
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- The plant wall allows for plant cells to swell under large internal pressure, what membrane lined passage allows for rapid movement of polar molecules between cells?1) A plant cell with a pressure potential of 5 bars and an osmotic potential of -9 bars is in equilibrium with a surrounding solution that is open to the air. What is the water potential of the surrounding solution? 2) A plant cell, when initially placed in pure water, has an osmotic potential of -4 bars and a pressure potential of +2 bars. a) Which way will water diffuse? b) When will net diffusion stop? c) When equilibrium is reached, what are the cell's osmotic potential and pressure potential values?What is the wall resistance of plant cells? Does this resistance facilitate or make difficult the entrance of water into the cell?
- If plant cells were placed in a hypotonic solution would they burst like the blood cells? Why?Specifically what happened to the plant cell in hypotonic solution? Water left what organelle? Did the cell wall change?Which of the following statements is true for the figure in question 8? a. The net movement of solutes is into the cell. b. There is no concentration gradient. c. There is a potential for plasmolysis. d. The solvent will move against its concentration gradient. e. If this were a plant cell, turgor pressure would be maintained.
- When a plant cell, such as one from a peony stem, is submerged in a very hypotonic solution, what is likely to occur? Group of answer choices A. the cell will become flaccid B. the cell membrane will lyse C. he cell will become turgid D. plasmolysis will shrink the interior E the cell will burst1 How are soaps made? Draw the full saponification reaction between potassium hydroxide and a triacylglycerol composed of stearic acid, oleic acid and palmitic acid. 2 How do soaps/ detergents work? include diagram. draw a diagram to show how ca2+ would disrupt miscelle formation. 3 draw a sketch of the cell membrane and label any important feature/ structures. how are gases , nutrients, ions transported across th ecell membrane. 4 Lipids are not water soluble, so how are dietary lipids and cholesterol transported?1.Base on your understanding of plant and animal cell osmosis, what condition do you think plant cells prefer? 2. What condition do you think animal cells prefer? Consider the question: How is solute concentration related to the change in the weight of plant cells (like potato cells)? 5. Write a hypothesis from the above question. Write one if statement and make three predictions(then statements) regarding how the cell will change (weight) in (1) hypertonic,(2) hypotonic, and (3) isotonic conditions:
- Describe the structure and function of Plant cell walls. What is the composition of Animal cells ECM? What are the critical functions of ECM?Vesicle budding is associated with coat proteins. What is the role of coat proteins in vesicle budding? How are coat proteins recruited to membranes?1. Estimate the maximum turgor pressures (Ψp) inside the cells of leaves and flowers. 2. Which structure (leaves or flowers) have stiffer, more rigid cell walls? What part(s) of the graphs tell you this? 3. At about what relative cell volume (equal to relative water content) does incipient plasmolysis occur for each structure? 4. Which structure (leaves or flowers) has more solutes inside the cells? 5. Which structure (leaves or flowers) do you expect to undergo more shrinking and swelling in volume with changes in water content? 6. Imagine you wanted to display a C. speciosa shoot in a vase in your house. You cut a flowering shoot (a shoot with both leaves and flowers on it) from a tree growing outside. You then transport the shoot into your house. As you carry it, the leaves and flowers are evaporating water. By the time you place the shoot in the vase of water, the relative water content (equivalent to relative cell volume) of the leaves and flowers has declined to…