A certain seaweed plant is found in estuaries. At high tide, the plant is exposed to sea water; at low tide, the plant is exposed to brackish water (less salty water). The concentrations of some dissolved materials remain virtually constant in the cells of the seaweed. 5. A certain seaweed plant is found in estuaries. At high tide, the plant is exposed to sea water;at low tide, the plant is exposed to brackish water (less salty water). The concentrations of somedissolved materials remain virtually constant in the cells of the seaweed.The concentrations of various substances inside the cells of a certain seaweed in sea water and inbrackish water were determined. Note: the cell maintains the concentration shown, in both şeawater and brackish water.SubstanceCellSea WaterBrackish WaterCalcium1.712.01.7Sodium90.0500.060.0Potassium480.0 - 500.028.01.4Chlorine520.0520.073.0Use the following key to answer the next four questions. (I, 4)A) calciumB) sodiumC) potassiumD) chloridea) Which substance is actively transported into the cell from both sea water and brackishwater?b) Which substance enters by active transport in brackish water and requires no energy input tomaintain it in salt water?c) Which substance is actively transported out of the cell in sea water and actively transportedinto the cell in brackish water?d) Which substance requires the cell to expend energy to maintain its concentration in sea waterbut not in brackish water?

Active transport A kind of movement of solute particles where solute moves from lower concentration…

5. A certain seaweed plant is found in estuaries. At high tide, the plant is exposed to sea water; at low tide, the plant is exposed to brackish water (less salty water). The concentrations of some dissolved materials remain virtually constant in the cells of the seaweed. The concentrations of various substances inside the cells of a certain seaweed in sea water and in brackish water were determined. Note: the cell maintains the concentration shown, in both sea water and brackish water. Substance Cell Sea Water Brackish Water Calcium 1.7 12.0 1.7 Sodium 90.0 500.0 60.0 Potassium 480.0 - 500.0 28.0 1.4 Chlorine 520.0 520.0 73.0 Use the following key to answer the next four questions. (I, 4) A) calcium B) sodium C) potassium D) chloride a) Which substance is actively transported into the cell from both sea water and brackish water? b) Which substance enters by active transport in brackish water and requires no energy input to maintain it in salt water? c) Which substance is actively transported out of the cell in sea water and actively transported into the cell in brackish water? d) Which substance requires the cell to expend energy to maintain its concentration in sea water but not in brackish water?

5. A certain seaweed plant is found in estuaries. At high tide, the plant is exposed to sea water; at low tide, the plant is exposed to brackish water (less salty water). The concentrations of some dissolved materials remain virtually constant in the cells of the seaweed. The concentrations of various substances inside the cells of a certain seaweed in sea water and in brackish water were determined. Note: the cell maintains the concentration shown, in both sea water and brackish water. Substance Cell Sea Water Brackish Water Calcium 1.7 12.0 1.7 Sodium 90.0 500.0 60.0 Potassium 480.0 - 500.0 28.0 1.4 Chlorine 520.0 520.0 73.0 Use the following key to answer the next four questions. (I, 4) A) calcium B) sodium C) potassium D) chloride a) Which substance is actively transported into the cell from both sea water and brackish water? b) Which substance enters by active transport in brackish water and requires no energy input to maintain it in salt water? c) Which substance is actively transported out of the cell in sea water and actively transported into the cell in brackish water? d) Which substance requires the cell to expend energy to maintain its concentration in sea water but not in brackish water?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter5: Membranes And Transport

Section: Chapter Questions

Problem 9TYK: Which of the following statements is true for the figure in question 8? a. The net movement of...

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7. Label the following diagrams of Red Blood Cells and Plant Cells as being examples of cells contained in Isotonic, Hypertonic and Hypotonic solutions. H,0 H,0 H,0 H,0 H,0 H,0 H,0 H,0
3. The diagram to the right depicts a cell submerged in a solution. The cell membrane is permeable to water but not to sugar. Start by completing the % concentrations of water of the intracellular and extracellular solutions. a) What is the cytosol in this example? (circle the correct term below) hypotonic hypertonic isotonic b) How do you know? 30% Sugar % Water d) Predict: What is going to happen to the size(mass) of the cell? 60% Sugar % Water c) Because the solutions are not isotonic, osmosis is going to occur. In what direction is water going to move? e) Predict: What is going to happen to the extracellular solute concentration?
6. A carrot, when dried out, becomes soft. There is a way to make it firm and crisp. Explain how and why, using the following guidelines. a) Draw and label a representative cell of the carrot, in its dried state. Be precise in your drawing. b)Describe the type of extracellular solution that is appropriate to add to make the desired change (name and define what type of solution, the net movements of solvent and solutes, etc.). c)Draw a representative cell of the carrot, in its possible state after the change. Represent the movement of water using an arrow to indicate what has happened.
8. Phosphate buffered saline (PBS) is often used as an isotonic solution to keep cells happy and alive. Though recipes vary, PBS typically contains 157 mM Na* and 4.5 mM K+, yet inside of the cell that ratio is switched (there is approximately 150 mM K* and only about 10 mM Nat). Why is PBS still considered isotonic? That is, why does putting cells into PBS not create a lot of osmotic pressure?
1. Presented below is an image of a semipermeable sac, containing 4% NaCl, 9% glucose, and 10% albumin, suspended in a solution with the following composition: 10% NaCl, 10% glucose, and 40% albumin. Assume the sac is permeable to all substances except albumin. Using the key choices, insert the letter indicating the correct event in the answer blanks. Key Choices: A. Moves into the sac B. Moves out of the Solution contains: sac C. Does not move 10% Naci 10% Glucose _1. Glucose 40% Albumin _2. Water 3. Albumin _4. Sodium Chloride -Sac contains: 4% Naci 9% Glucose 10% Albumin
7. Give an example of a situation where BIP would be expected to bind your made up protein in the cell 8. Give an example of a protein transport system that moves folded proteins across membranes 9. How does the cell achieve unidirectional transport of proteins into the nucleus? BASE ON PROTEIN
4. A researcher is interested in the mode of transport of three different substances (A, B, & C) across the cell membrane. The researcher's data is presented in the graphs below. A) A Initial rate of transport into the Bor C cell Concentration The graph above shows the initial rate of transport for each substance when cells that do not contain A, B, or C are placed in solutions of differing concentrations of A, B, and C, respectively. Based on this data, which of the following is/are compatible modes of transport for substance A? (active transport, facilitated diffusion, simple diffusion) For substance B? For substance C?
4. The diagram below illustrates a red blood cell in three different solutions. Identify eachsolution as being hypertonic, hypotonic or isotonic.
1. The cells of a celery stick have a salt concentration of 1% and a nucleic acid concentration of 4%. The celery stick is placed into a glass of salt water solution. The solution contains a salt concentration of 0.6% and a nucleic acid concentration of 6%. The salt can pass through the membrane, but the mucleic acids cannot. a) Describe the movement of the ions and the end results. Use appropriate terminology to explain your answer. b) Draw a labeled diagram of the movement of water (assume that only the substances mentioned can influence the movement of water).
8.Patients who enter the emergency room dehydrated are usually given sterile saline solution intravenously. The solution administered is isotonic to prevent cell damage. What would happen if the solution was hypotonic? Group of answer choices A. Hypotonic solutions have a higher osmotic pressure than that within cells so hemolysis can occur B. Hypotonic solutions have a lower osmotic pressure than that within cells so crenation can occur can occur. C. Hypotonic solutions have a lower osmotic pressure than that within cells so hemolysis can occur. D. Hypotonic solutions have the same osmotic pressure as that within cells so nothing will happen. 9.The solubility of CaCl2 in water is135g/100 ml. What would be the best method for preparing a 50.0 mL of supersaturated CaCl2 solution? Group of answer choices A. add 72 g of CaCl2 to 50.0 mL of H2O at 100 °C while stirring at room temperature B. add 67 g of CaCl2 to 50.0 mL of H2O at 100 °C while stirring at room temperature…
I. On this table, show in diagram or illustration how cells behave in different conditions Hypotonic Solution 2. Lysing Hypertonic solution 3.Shriveled Type of cell Isotonic Solution 1. Normal cell Animal cell 4. Flaccid 5. Turgid |6. Plasmolyzed Plant cell
1 In the space below, draw three plants cells: one that is turgid, one that is flaccid, and one that is plasmolyzed. Indicate with arrows the direction of the net movement of water across the cell membrane. Feel free to draw these in a notebook, then uploading a photo below. It’s also ok if you use some program like Paint. 2 Underneath each cell you drew above, label whether the plant that cell represents was placed in a hypertonic, hypotonic, or isotonic solution. 3 Design and describe an experiment using celery stalks to demonstrate how certain conditions will cause a loss or gain of turgor pressure. In order to follow the scientific method, your description should start with an observation and be followed by: a. a testable hypothesis, b. an outline of the experiment that will test the hypothesis, c. a description of the type of data that will be collected, and d. a possible conclusion that could likely be made after completing the experiment and analyzing the data.