Laboratory Manual For Human Anatomy & Physiology
Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Textbook Question
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Chapter 6, Problem 1PL

Which of the following membrane movements is not a passive process?

  1. osmosis
  2. diffusion
  3. active transport
  4. filtration

Expert Solution & Answer
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Summary Introduction

Introduction:

Passive transportation is a method in which the movement of the cellular substances takes place from one cell to another. Energy is not required in the transport of molecules.

Answer to Problem 1PL

Correct answer:

The correct answer is option (c) active transport.

Explanation of Solution

Explanation/justification for the correct answer:

Option (c) active transport. Active transportation is the passage of molecules from cell to cell. It requires energy for the process of transport as the movement is initiated against the concentration gradient. So, the correct answer is option (c).

Explanation for incorrect answer:

Option (a) osmosis. Osmosis is a process of movement of water molecules from low concentration to a high concentration. It requires no energy for the process of transport. So, this is an incorrect option.

Option (b) diffusion. Diffusion is a process of movement of molecules, ions, and atoms from high concentration to low concentration. It occurs in the absence of energy. So, this is an incorrect option.

Option (d) filtration. Filtration is a process of movement of solute or fluid against the gradient. The process of filtration occurs by applying the pressure, which can result in the movement of the molecules against the gradient. It does not require energy and filter across the semi-permeable membrane. So, this is an incorrect option.

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Students have asked these similar questions
Which of the following processes could result in the net movement of a substance into a cell, if the substance is more concentrated in the cell than in the surroundings?     diffusion     active transport     osmosis     facilitated diffusion
The movement of molecules that expends energy to move potassium ions into the cell and a different number of sodium ions out of the cell   Simple Diffusion Facilitated Diffusion Osmosis Sodium-Potassium Pump
Which of the following is true regarding the permeability of the cytoplasmic membrane? Nothing can diffuse across the membrane All molecules can freely diffuse across it Only non-polar molecules can diffuse across the membrane It is generally impermeable to ions, polar molecules
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license