Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 30.3, Problem 1TYK
Summary Introduction
Introduction:
The water pressure inside the plant cells is an important aspect to support the plant and this is done through the process of transpiration. The pressure inside the cell is called turgor pressure that pushes it against the cell wall and is maintained by the process of osmosis. Osmosis is the motion of water molecules through a semipermeable membrane from a lesser concentration of solute to a higher concentration of solute. This is to maintain equilibrium.
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A plant cell placed into a hypotonic environment will:
Lyse
Will “puff up” and swell but not lyse
Go through plasmolysis
Remain at the same osmotic pressure
Which of the following membrane activities requires energy from ATP hydrolysis?
Group of answer choices
water uptake of plants from roots to shoots
movement of water using aquaporin
absorption of dissolved nutrients in the small intestine
transport of oxygen through the phospholipid layer
Pressure being applied by the cell wall would make the water (more likely/less likely) to want water.
Solute potential is always ___________ because more solutes makes water want to come ___________ the cell
Pressure potential is always ___________ because more pressure makes water want to go ___________ of the cell.
Chapter 30 Solutions
Principles of Biology
Ch. 30.1 - Prob. 1TYKCh. 30.1 - Prob. 2TYKCh. 30.2 - Prob. 1CCCh. 30.2 - Prob. 2CCCh. 30.2 - Prob. 1TYKCh. 30.2 - Prob. 2TYKCh. 30.3 - Prob. 1TYKCh. 30.3 - Prob. 2TYKCh. 30.4 - Prob. 1BCCh. 30.4 - Prob. 1TYK
Ch. 30.4 - Prob. 2TYKCh. 30.5 - Prob. 1CCCh. 30.5 - Prob. 2CCCh. 30.5 - Prob. 1TYKCh. 30.5 - Prob. 2TYKCh. 30.5 - Which scenario is most closely related to sugar...Ch. 30 - Which of the following can limit plant growth in...Ch. 30 - Prob. 2TYCh. 30 - Soil organic matter provides the benefit of...Ch. 30 - Prob. 4TYCh. 30 - Prob. 5TYCh. 30 - Prob. 6TYCh. 30 - Prob. 7TYCh. 30 - Prob. 8TYCh. 30 - Why is it a bad idea to overfertilize your...Ch. 30 - Prob. 2CCQCh. 30 - Prob. 3CCQCh. 30 - Prob. 1CBQCh. 30 - Prob. 2CBQ
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- Explain what would happen if a plant cell was placed in a hypotonic environment and why (be sure to include solute concentrations, water movement and turgor pressure in your explanation)?arrow_forwardThe following diagram shows the effect of osmotic concentration on a plant cell. Using the terms isotonic, hypertonic and hypotonic identify what is happening in each cell and state what each term means and which cell it applies to. Plant cells cell wall -nucleus cell membrane -central vacuole -chloroplast Paragraph B I U v A !!! liliarrow_forwardImagine a cell with a water potential of –0.1 MPa being placed in a beaker of solution that also has a water potential of –0.1 MPa. Are the two water potentials in equilibrium? Would any water molecules be moving between the cell and the solution? Would there be a net movement of water? Now imagine a root in moist soil, and imagine that the root cortex cells have a water potential of –0.1 MPa and that the soil solution also has a water potential of –0.1 MPa. Would there be any net movement of water into the root?arrow_forward
- Plants can transport water from their roots to their canopy regardless of their height. What properties of water make this long distance transport possible? Plants can transport water from their roots to their canopy regardless of their height. What properties of water make this long distance transport possible? Water can dissolve many substances Water has a high specific heat Cohesiveness of water Adhesiveness of water Choices A and B Choices A and Carrow_forwardImagine you have a plant with a water potential of -0.1 MPa in the root tissue. What would happen if you place the roots of this plant in a 0.1 M solution of sucrose (water potential is -0.23 MPa)? The net water flow would be from the tissue into the sucrose solution The net water flow would occur only as ATP was hydrolyzed in the tissue The net water flow would be from the sucrose solution into the tissue The net water flow would be in both directions and the concentration of water would remain equal The net water flow would be impossible to determine from the values given herearrow_forwardFor solutes to get to the buds of the plant, which route is quicker? Apoplast, Symplast, or transmembrane?arrow_forward
- A freshwater (very low solute concentration) plant is placed into seawater (very high solute concentration). Which way will the water move?arrow_forwardWhat is the Cohesion-Tension hypothesis? What is the source of energy that creates the tension? Where on the plant does the tension form? What properties of water are important for this hypothesisarrow_forwardThe osmotic potential of the plant cell is -0.1 MPa and it is placed in an 9 mM sorbitol solution (21 °C). Calculate the turgor pressure of the cell when the water potential of the cell has equilibrated to the same as that of the solution.arrow_forward
- . Which of the following ion channels are always electrosensitive? stress-activated channels ligand-gated channels with extracellular ligands voltage-gated channels ligand-gated channels with intracellular ligands all of the above The movement of hydrogen ions and sucrose molecules in the same direction across the plant cell membrane, at the same time, using the hydrogen ion gradient as an energy source, is an example of: antiport movement symport movement uniport movement all of the above none of the abovearrow_forwardWhich of the following describes what happens in the ROOT HAIR cells? Mineral lons Water pass into the passes into Plant loses plant the plant water by through through transpiration active osmosis transport A Yes Yes No В Yes Yes Yes C Yes No Yes D No Yes Yesarrow_forwardThe 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?arrow_forward
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