CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
3rd Edition
ISBN: 9780136811206
Author: Urry
Publisher: SAVVAS L
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Chapter 29, Problem 10TYU
SCIENTIFIC INQUIRY
A Minnesota gardener notes that the plants immediately bordering a walkway are stunted compared with those farther away. Suspecting that the soil near the walkway may be contaminated from salt added to the walkway in winter the gardener tests the soil. The composition of the soil near the walkway is identical to that farther away except that it contains an additional 50 mM NaCl. Assuming that the NaCl is completely ionized, calculate how much it will lower the solute potential of the soil at 20°C using the solute potential equation
where i = the ionization constant (2 for NaCl), C = the molar concentration (in moles/liter), R = the pressure constant [R = 0.00831 (liter MPa)/(mole K)] and T = temperature in Kelvin (273 + °C) Describe how this change in the solute potential of the soil would affect the water potential of the soil. Explain how the change in the water potential of the soil would affect the movement of water in or out of the roots
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Solution A has a more negative water
potential than solution B.
Which of the following statements is/are
1
correct?
Statement 1: Solution B has a higher wa
potential than solution A
Statement 2: There would be a net
movement of water from solution A to
solution B
Statement 3: There would be a net
movement of water from solution A to
distilled water
A
1,2 and 3 are correct
B Only 1 and 2 are correct
C Only 2 and 3 are correct
D Only 1is correct
Memb
EXPERIMENT : GRAVIMETRIC ANALYSIS OF PHOSPHORUS IN PLANT FOOD
I want Result & Analysis for this experiment
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TIME Remaning
water. Below is a table showing data from an experiment in which leave disks were exposed to different
colored light. The times it took for the leave disks to float to the surface are recorded under each light color
column. The numbers in the left column indicate 10 groups conducted the experiment.
Diagram 5: Experimental Set-Up for leaf discs under various colors of light
Light color:
Green
Blue
Plain
Red
Data collection and processing
Recorded times for leaf dises ni sing for different colors - Trial I (seconds)
(+2 Seconds )
Red
Plain
80
170
209
172
183
333
40
80
89
97
102
121
124
138
152
162
377
184
4
380
462
398
167
510
6
516
380
546
381
565
642
820
899
381
558
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10
A Table 1: This is the time that it took for the first 10 leaf discs to rise when exposed to light
while submerged in water. (One of 3 trials)
612
604
1005
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Look at the data for leaf disk #2 in the Table 1. Under which color of light would the least amount of H* be available to pass through…
Chapter 29 Solutions
CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
Ch. 29.1 - Why is long-distance transport important for...Ch. 29.1 - Prob. 2CCCh. 29.1 - WHAT IF? Some plants can detect increased levels...Ch. 29.2 - If a plant cell immersed in distilled water has a...Ch. 29.2 - How would a reduction in the number of aquaporin...Ch. 29.2 - WHAT IF? What would happen if you put plant...Ch. 29.3 - Prob. 1CCCh. 29.3 - WHAT IF? If an element increases the growth rate...Ch. 29.3 - Prob. 3CCCh. 29.4 - Prob. 1CC
Ch. 29.4 - Prob. 2CCCh. 29.4 - Prob. 3CCCh. 29.5 - A scientist adds a water-soluble inhibitor of...Ch. 29.5 - WHAT IF? Suppose an Arabidopsis mutant lacking...Ch. 29.5 - Prob. 3CCCh. 29.6 - Prob. 1CCCh. 29.6 - WHAT IF? If you buy cut flowers, why might the...Ch. 29.6 - Prob. 3CCCh. 29.7 - Prob. 1CCCh. 29.7 - Prob. 2CCCh. 29.7 - Prob. 3CCCh. 29 - Which structure or compartment is part of the...Ch. 29 - Prob. 2TYUCh. 29 - Prob. 3TYUCh. 29 - What would enhance water uptake by a plant cell?...Ch. 29 - Prob. 5TYUCh. 29 - Compared with a cell with few aquaporin proteins...Ch. 29 - Two groups of tomatoes were grown in the...Ch. 29 - Prob. 8TYUCh. 29 - Prob. 9TYUCh. 29 - SCIENTIFIC INQUIRY A Minnesota gardener notes that...Ch. 29 - Prob. 11TYUCh. 29 - FOCUS ON INTERACTIONS The soil in which plants...Ch. 29 - Prob. 13TYU
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- How does increasing solute concentration affect water potential? (a) water potential becomes more positive (b) water potential becomes more negative (c) water potential becomes more positive under certain conditions and more negative under other conditions (d) water potential is not affected by solute concentration (e) water potential is always zero when solutes are dissolved in waterarrow_forwardEverybody Wrk UL6- Sca woy coutt an N pack filled with pure water potentially kill a patient? INDEPENDENT PRACTICE The diagrams below represent animal and plant cells in beakers containing solutions of vanina levels, The level of dissolved salts in each solution is indicated in the diagram. Assume each celt a salt concentration of 0.8% Analyze each diagram and complete the following: Line A- indicate whether the solution is hypertonic, hypotonic or isotonic relative to the cel Line B- indicate the direction of water movement: into the cell, out of the cell, in and out equally Line C- describe any changes that would take place in the cell (ex: the cell would... swell. shrivel, burst, etc.) O= Animal Cell = Plant Cell A. 1. B. 0.8% C. 0.2% saltarrow_forwardWhere is there more solute in this image (inside the bag or outside the bag in the beaker)? 0.8M 0.2M Selectively permeable membrane Where is the more water? In the bag or the beaker?arrow_forward
- 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.arrow_forwardcalculate growth rate and generation timearrow_forwardI need help finishing the table with tonicity and if it’s possible to do graph please.arrow_forward
- What are some other biological examples of solutes affecting water potential and therefore movement of water in a living organism? Find examples in both plant and animal.arrow_forwardWhat is a possible hypothesis about the osmolarity of the potato tissue in relation to the sucrose solutions presented?arrow_forward% Change in Potato Core Mass Groups of students in a biology class conduct an experiment to explore the movement of water into and out of plant cells. Each group makes six potato cores and mneasures the initial masses of the cores. The groups submerge the potato cores in sucrose solutions of differing concentrations that range from 0.0 M to 1.0 M. After one hour, each group removes the potato cores from the solutions and measures the final masses of the cores. The initial and final masses of the potato cores are used to calculate a percent change in mass for each core to account for differences in the initial masses. The students generate a graph using the average percent change in mass for all the groups in the class for each solution. 20 10 0.0 0.2 0.4 0.6 0.8 1.0 -10 -20 -30 -40 Concentration of Sucrose (M) Based on the data collected, which solution concentration is isotonic to the potato core? O 0.0 M O 0.2 M O 0.6 M O 1.0 M.arrow_forward
- Name the phenomenon by which living or dead plant cells absorb water by surface attraction.arrow_forwardA solution with 0.4M sucrose will have a higher water potential than a solution with 0.5M sucrose. True or Falsearrow_forwardGround limestone can be added to soil to make it less acidic. Would you expect the pH or limestone in a water solution to be less then or greater than 7arrow_forward
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