Plant Physiology - Transportation Questions and Answers

16 Reason of edema formation is the a Imbalance between filtration and reabsorptions process Balance between filtration and reabsorption process Intensity of filtration is less than reabsorption Intensity of filtration and reabsorption is equal b d a b 17 Saturation phenomenon is characteristics of Osmosis Simple diffusion Facilitated transport Filtration

7 Intensity of facilitated diffusion depends on Only on the concerneration of molecules Only on the size of molecules On the conceneration of molecules and saturation constant K On the concentracion gradient number of transporters affinity for betrate and Vmax Which of the following is not function of the cell membrane Transport Protein synthesis Signaling Cell to cell communication

Provide full enzyme mediated arrow mechanisms for the reactions using the necessary cofactors see final page for structures A H N B HO H O CH CH OH PLP R H 0 H OH OPO H H CO CH CH COI O OH OH CH OPO2 OH TPP R O CH OH H N OPO 2 HO R H H O CH CH COI CH OH H OH H OH CH OPO NAD

The salt concentration in a cell's cytoplasm is 0.9%. The cell is placed in a 10% salt solution. Which term best describes the 10% salt solution relative to the cytoplasm of the cell? hypotonic isotonic osmotic hypertonic turgonic

Which of the following is NOT a factor that directly determines the rate of diffusion of molecules or ions across a membrane? the steepness of the concentration gradient temperature the type of molecule or ion diffusion the surface area of the membrane the size of the container holding the membrane

If both a plant cell and an animal cell are placed in a hypotonic solution, how would their responses differ? A plant cell, with its strong cell wall, will absorb water only until the cell wall restricts the expansion of the cell membrane. An animal cell will continue to take on water, potentially until its membrane ruptures. The cell membrane alone is not strong enough to withstand the increased osmotic pressure. An animal cell, with its strong cell wall, will absorb water only until the cell wall restricts the expansion of the cell membrane. A plant cell will continue to take on water, potentially until its membrane ruptures. The cell membrane alone is not strong enough to withstand the increased osmotic pressure. Both cells, with strong cell walls, will absorb water only until the cell wall restricts the expansion of the cell membrane. After the animal cell stops expanding, the plant cell will continue to take on water, potentially until its membrane ruptures. The cell membrane alone is not strong enough to withstand the increased osmotic pressure. Both cells, with strong cell walls, will absorb water only until the cell wall restricts the expansion of the cell membrane. After the plant cell stops expanding, the animal cell will continue to take on water, potentially until its membrane ruptures. The cell membrane alone is not strong enough to withstand the increased osmotic pressure.

What do we call a natural resource if it can be used up faster than it can be replaced? A. depletable B. renewable C. sustainable

Collect a fresh leaf and place it in a bowl of water. Wait 30 minutes, then observe the leaf. Describe or illustrate your observations below. Why do you think this is happening?

In the experimental conditions described below, how many molecules of dextrose do you have to add to the extracellular fluid in order to make it iso-osmotic relative to the intracellular fluid? Intracellular fluid: • Number of water molecules = 60 • Number of Dextrose molecules = 7 • Number of Sucrose molecules = 2 Extracellular fluid: • Number of water molecules = 160 • Number of dextrose molecule = ???? • Number of Sucrose molecules = 0 Enter the number of molecules of dextrose in your answer (format: for 7 enter 7 or 7.00, for 7.5 enter 7.5 or 7.50, for 7.3333 enter 7.33 etc...). Your Answer: Answer

Scientists create a linkage map of two linked genes. They find that the recombination frequency is very low. Which of the following statements is most likely true based on this result? The genes are close together on the chromosome There are a range of phenotypes for the genotype The genes are far apart on the chromosome The genes are experiencing hybrid vigor More than one gene affects a single character

Which of the following statements is FALSE? The plasma membrane allows for passage of some molecules but not others A plant cell placed in a hypertonic environment will experience plasmolysis Phagocytosis transports material out of the cell using membrane vesicles Cotransport of an ion and a molecule in opposite directions is called antiport Cells tend to be small to maximize their surface area to volume ratio (SA/V)

The movement of molecules from an area of high concentration to an area of lower concentration is called ________ Select one: a. facilitated diffusion b. diffusion c. active transport d. osmosis e. endocytosis

Which of the following is true about vascular plants? they conduct water and solutes to different parts of the plants through specialized cells they have a heart and arteries they use osmosis to transport substances throughout the plant they lack xylem and phloem

The active transport of molecules across a plasma membrane requires energy. Movement of sodium ions up their concentration gradient requires energy in the form of ATP. both of these statements are true the first statement is true, the second statement is false both of these statements are false the first statement is false, the second statement is true

You are designing an experiment comparing treating a plant with indoleacetic acid vs. acetic acid. You add 75 mL of water to 360 mL of acetic acid with a concentration of 0.87 M. Determine the molarity of the new acetic acid solution.

Water potential in potato cells was determined in the following manner. The initial masses of six groups of potato cores were measured. The potato cores were placed in sucrose solutions of various molarities. The masses of the cores were measured again after 24 hours. Percent changes in mass were calculated. The results are shown below. a. Predict what would happen to typical animal cells placed in 0.0 M and 1.0M sucrose solutions, and explain your prediction.