4 Paramecium caudatum lives in a hypotonic solution. Excess water is removed from the cell via structures called contractile vacuoles. Given what you know about vacuoles (refer to Table 4.3, p. 79) and what you know about cells able to contract, suggest the type of transport that occurs when water is moved out of Paramecium.

4 Paramecium caudatum lives in a hypotonic solution. Excess water is removed from the cell via structures called contractile vacuoles. Given what you know about vacuoles (refer to Table 4.3, p. 79) and what you know about cells able to contract, suggest the type of transport that occurs when water is moved out of Paramecium.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter5: Structure And Function Of Plasma Membranes

Section: Chapter Questions

Problem 31CTQ: Glucose from digested food enters intestinal epithelial cells by active transport. Why would...

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Water moves via osmosis. throughout the cytoplasm from an area with a high concentration of other solutes to a lower one from an area with a high concentration of water to one of lower concentration from an area with a low concentration of water to higher concentration
Glucose from digested food enters intestinal epithelial cells by active transport. Why would intestinal cells use active transport when most body cells use facilitated diffusion?
Imagine a cell can perform exocytosis, but only minimal endocytosis. What would happen to the cell? The cell would secrete all its intracellular proteins The plasma membrane would increase in size over time The cell would stop expressing integral receptor proteins in its plasma membrane The cell would lyse.
Which of the following organelles relies on exocytosis to complete its function? Golgi apparatus vacuole mitochondria endoplasmic reticulum
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.
41. A TRANSPORT MECHANISM ACROSS A MEMBRANE WHERE THE MOVEMENT OF THE SOLUTION IS FROM HIGHER TO LOWER CONCENTRATION UNTIL SUCH TIME THAT EQUILIBRIUM IS ESTABLISHED?A. OSMOSISB. FREE DIFFUSIONC. FACILITATED ABSORPTIOND. ACTIVE TRANSPORTE. DIALYSIS 42. BIOMOLECULES ARE HYDROLYZED FIRST INTO THEIR SIMPLEST FORM BEFORE THEY CAN BE ABSORBED BY THE TISSUES. GLUCOSE ABSORPTION IS THROUGH WHICH OF THE FOLLOWING?A. OSMOSISB. FREE DIFFUSIONC. FACILITATED ABSORPTIOND. ACTIVE TRANSPORTE. DIALYSIS 43. A TRANSPORT MECHANISM THROUGH MEMBRANE WHICH NEEDS ATP?A. OSMOSISB. FREE DIFFUSIONC. FACILITATED ABSORPTIOND. ACTIVE TRANSPORTE. DIALYSIS 44. TRANSPORT MECHANISM ACROSS MEMBRANE OF GASES?A. OSMOSISB. FREE DIFFUSIONC. FACILITATED ABSORPTIOND. ACTIVE TRANSPORTE. DIALYSIS 45. A TRANSPORT MECHANISM IN WHICH SMALLER PARTICLES PASSES THROUGH MEMBRANE BUT NOT THE BIG ONE?A. OSMOSISB. FREE DIFFUSIONC. FACILITATED ABSORPTIOND. ACTIVE TRANSPORTE. DIALYSIS
7. Which of the following membrane transport proteins would you expect to be the most selective (although not the most rapid)? the bicarbonate ion channel the glucose carrier protein the potassium ion channel the chloride ion channel the sodium ion channel
Paramecium caudatum lives in a hypotonic solution. Excess water is removed from the cell via structures called contractile vacuoles. Given what you know about vacuoles (refer to Table 3.3, p. 68) and what you know about cells able to contract, suggest the type of transport that occurs when water is moved out of Paramecium.
1. In a passive process (passive transport) across a cell's plasma membrane, ______ differences drive the movement; while in an active process, the cell provides ______ to power the transport process. A. concentration, ATP B. ATP, concentration C. differential permeability , driving force D. driving force, differential permeability
25. Diagram the appearance of one Elodea cell (1) mounted in water, and (2) mounted in salt solution normal (1) plasmolyZed (2)
DO NOT COPY THE ANSWER FROM THE SAME QUESTION. Sassa, a biology professor, wanted to demonstrate to her students the applicability of a dialyzing membrane (DM) as a model for the cell membrane by enclosing an aqueous solution in a DM bag and immersing in a beaker containing a different solution. Substances available which are permeable to the DM include 0.02 M NaCl, 0.03 M glucose, and 0.01 M glucose. The only substance available which is completely impermeable to the DM is the 0.01 M lactose. Using the substances given and materials such as a beaker, stirring rod, and string, draw ONLY ONE set-up that can be demonstrated by Ms. Sassa that will satisfy ALL of the following conditions:a. No solute will exhibit a net diffusion out of the cell.b. Glucose will exhibit a net diffusion into the cell.c. NaCl will exhibit a zero net d. No net movement of lactose from the inside to outside of the cell. Make sure to label properly the substance inside the beaker and inside the DM bag.
23. Osmotic pressure is the force provided by water molecules as they diffuse through the membrane osmotic pressure is indicated by the height of the water columns observed in this experiment higher columns indicate greater pressure What relationship exists between the difference in the concentration of water on each side of the membrane and the osmotic pressure.