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Ovided before 4:30 PM. Late work will not be accepted. 1. A plant cell was placed...
a. A plant cell was placed into water that have Ys = 0 MPa. The plant cell’s Ys = -0.8 MPa and Yp = +0.6 MPa. Discuss where water will move and how the cell’s Ys and Yp will change with the movement of water. At equilibrium, what would happen if you add salt to the water? Explain. b. How does water move from roots to shoots? Discuss the three mechanisms.
Plant water relations overview We use the term water potential (Ψw) to describe the chemical potential of water, and our understanding of diffusion of water depends on our understanding of how various factors (such as temperature, pressure, presence of dissolved solutes) affect the water potential in various parts of a system. Since diffusion of a substance tends to occur downward along a chemical potential or free energy gradient, it also is important to understand how such gradients are established. By...
I dont understabd the last 3 questions . A single piant cell is placed in an sotoric solution. Salt is then odded to the sokutlion. wwich ot me totowing wouid occur as a resut of the solt addition Water wouid leave the cell by osmoss. causing the volume of the cytoplosm to decreone. Water would entor the cel by osmosis, and the cel would swe t T The added salt would enter the cel cousing the cell to take up...
21. The ______ prevents plants cells from bursting when place in a ____ solution. a) centrioles-hypotonic b) chloroplasts-hypertonic c) plasma membrane-hypertonic d) vacuole-hypertonic e) cell wall-hypotonic 22. Specialized cells like your own lung cells each lack which of the following organelles which are commonly found in an onion. a) cell membrane b)cell wall c)ribosomes d)nucleolus e) none of the above ______ 23. White blood cells engulf and destroy foreign particles by a process known as phagocytosis which is actually a)...
CRITICAL THINKING QUESTIONS 1. A pre-weighed dialysis bag which contained a solution of 10% glucose was placed in a beaker containing a solution of 20% glucose. After one hour, the bag was weighed again a. Calculate the % mass change of this dialysis bag from the following information: • Mass of bag before experiment: 15.39 • Mass of bag after experiment: 12.79 b. Determine the tonicity of the beaker when it is compared to the dialysis bag: 2. facell had...
1. Which of the following are the sites within the human body where carbon dioxide and oxygen are exchanged? A. Alveoli B. Arteries C. Synapses D. Venules 2. Which of the following describes the most important reason for repeating an experimental investigation? A. To verify the validity of the original findings B. To expand upon the original investigation C. To manipulate the independent variable D. To attempt to disprove the hypothesis 3. Lithium has an atomic number of 3 and...
In your judgement, and given only the facts described in this case, should the management of Massey energy Company be held morally responsible for the deaths of the 29 miners? Explain in detail. Suppose that nothing more is learned about the explosion other than what is described in this case. Do you think Don Blankership should be held morally responsible for the deaths of the 29 miners? Explain in detail. Given only the facts described in this case, should the...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...
FISCAL POLICY IN THEORY: March, 2020: we are on the verge of Congress and the President passing legislation that will empower the federal government to spend an unprecedented amount of EXTRA money not seen since World War 2 ---- in order to address the pandemic but also to help cushion the blow financially of perhaps ten or twenty million Americans --- or more --- losing their jobs, and thus suffering a drop in income. The scale of the 2020 recession...
Chapter overview 1. Reasons for international trade Resources reasons Economic reasons Other reasons 2. Difference between international trade and domestic trade More complex context More difficult and risky Higher management skills required 3. Basic concept s relating to international trade Visible trade & invisible trade Favorable trade & unfavorable trade General trade system & special trade system Volume of international trade & quantum of international trade Commodity composition of international trade Geographical composition of international trade Degree / ratio of...