Ethanol, the active ingredient in alcoholic beverages, is a small, polar, charged molecule. How does this substance enter the cell? Select the best answer Question options: Ethanol is soluble in the membrane, so it can diffuse into the cell. Ethanol is soluble in the membrane, so it moves through a channel protein. Ethanol is insoluble in the membrane, so it is brought in by endocytosis. Ethanol is insoluble in the membrane, so it is actively pumped into the cell. Ethanol is insoluble in the membrane, so it moves through a channel protein.

Ethanol, the active ingredient in alcoholic beverages, is a small, polar, charged molecule. How does this substance enter the cell? Select the best answer Question options: Ethanol is soluble in the membrane, so it can diffuse into the cell. Ethanol is soluble in the membrane, so it moves through a channel protein. Ethanol is insoluble in the membrane, so it is brought in by endocytosis. Ethanol is insoluble in the membrane, so it is actively pumped into the cell. Ethanol is insoluble in the membrane, so it moves through a channel protein.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 5RE: Using the answer code on the right, indicate which membrane component is responsible for the...

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Below are listed molecules with different chemical characteristics. Knowing that all molecules will eventually diffuse across a phospholipid bilayer, select the list that most accurately predicts the relative rates of diffusion of these molecules (fastest to slowest) across a biological membrane. alanine, propanol, sodium, estrogen sodium, propanol, alanine, estrogen estrogen, propanol, sodium, alanine estrogen, propanol, alanine, sodium
Compare and contrast the following methods of a passing cell membrane in terms of movement with respect to the concentration gradient, use of ATP, and the use of transporters with examples. (Simple) Diffusion Facilitated Diffusion/Passive Transport Osmosis Active Transport Exocytosis Endocytosis (with its 3 subforms)
Fill in the blanks with the following words: diffusion, endocytosis, solute pump, osmosis. The type of active transport in which sodium and potassium are pumped across a membrane using ATP is called a This passive process is where water moves in and out of a cell The type of passive process in which molecules move across the plasma membrane down a concentration gradient is called This process is where the cell engulfs extracellular substances by phagocytosis or pinocytosis
Which of the following statements are correct? Explain your answers. The plasma membrane is highly impermeable to all charged molecules. Channels have specific binding pockets for the solute molecules they allow to pass. Transporters allow solutes to cross a membrane at much faster rates than do channels. Certain H+ pumps are fueled by light energy. The plasma membrane of many animal cells contains open K+ channels, yet the K+ concentration in the cytosol is much higher than outside the cell. A symport would function as an antiport if its orientation in the membrane were reversed (i.e., if the portion of the molecule normally exposed to the cytosol faced the outside of the cell instead). The membrane potential of an axon temporarily becomes more negative when an action potential excites it.
What happens to phospholipid mobility when the cell is treated with agents that disrupt the underlying membrane skeleton? options: Their mobility is unchanged. Their mobility is increased because the fences that normally restrict their diffusion are removed. Their mobility is decreased because the fences that normally restrict their diffusion are removed. Their mobility is increased because the treatment raises the temperature.
A section of a cell membrane Is shown in the diagram below. CELL MEMBRANE Low Concentration of Substances Outside Cell Cell Membrane Inside Cell High Concentration of Substances Which type of membrane transport by a carrier proteln is most likely shown in the diagram if energy is NOT being used? osmosis simple diffusion active transport facilitated diffusion Direction of Substance Movement
Which of the following is a characteristic of facilitated diffusion (passive transport) of a molecule across a membrane? OOO The rate of transport is saturable. It is highly specific for the molecule being transported. All of the answers are correct. Its rate is higher than that of simple diffusion of the molecule. The direction of transport is determined by concentration and/or electrochemical gradients.
Which of the following best describes a hypotonic solution? a-There is a higher concentration of solute outside the cell than inside the cell b-There is a lower concentration of solute outside the cell than inside the cell c-The solute concentration both inside and outside the cell is equal d-Through osmosis, water will enter the cell causing it to swell
Discuss the methods that the cell is able to get the molecules needed for normal functions using the following terms.Active TransportPumpsATP Concentration Gradient (with and against)Simple DiffusionFacilitated DiffusionPassive TransportProteinsPhospholipids
Crossing a cell membrane by simple diffusion can be distinguished from facilitated diffusion by which of the following: Select all that apply. Simple diffusion moves molecules down a concentration gradient while facilitated diffusion moves molecules up a concentration gradient Simple diffusion does not require membrane proteins; facilitated diffusion requires specific membrane proteins Simple diffusion does not require energy; facilitated diffusion requires energy Simple diffusion is not saturable; facilitated diffusion rates are limited by the number of functional membrane proteins and can be saturated
From the following list, choose TWO molecules capable of freely diffusing across the plasma membrane (i.e. no transport protein needed). nucleic acid V small charged electrolyte carbohydrate V nonpolar lipid hydrophilic protein hydrophobic molecule
Match the following terms with the appropriate type of movement across a cell m diffusion active transport facilitated diffusion osmosis endocytosis A membrane-bound vesicle fuses with the cell membrane and releases its contents inside of the cell membrane lons move through a semi-permeable membrane down their concentration gradien t (high to low) without the use of energy from the cell. Water diffuses freely across a semi-permeable membrane without the use of energy from the cell. A molecule moves against its concentration gradient (low to high) with energy provided by ATP molecules in the cell A membrane-bound vesicle fuses with the cell membrane and releases its contents inside of the cell membrane A molecule moves down its concentration gradient (high to low) assisted by a carrier protein in the cell membrane without the use of

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	Ethanol is soluble in the membrane, so it can diffuse into the cell.
	Ethanol is soluble in the membrane, so it moves through a channel protein.
	Ethanol is insoluble in the membrane, so it is brought in by endocytosis.
	Ethanol is insoluble in the membrane, so it is actively pumped into the cell.
	Ethanol is insoluble in the membrane, so it moves through a channel protein.