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Chapter 5: Q. 25 (page 154)

Why does water move through a membrane?

Short Answer

Expert verified

The water moves through a membrane when it is not in an equilibrium state and when it doesn鈥檛 have equal concentrations on each side of the membrane.

Step by step solution

01

Step 1. Introduction 

Like any other molecules water wants to be in an equilibrium state and also it needs an equal concentration on each side of the membrane. Osmosis is one of the processes which happen instantly to maintain an equilibrium state.

02

Step 2. Explanation 

Water will move quickly inside the cell when the water concentration outside the cell is more than the inside.

In case, when water enters the cell it even raises the concentration level and the reverse action will happen outside the cell if there is a lower concentration.

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Most popular questions from this chapter

A doctor injects a patient with what the doctor thinks is an isotonic saline solution. The patient dies, and an autopsy reveals that many red blood cells have been destroyed. Do you think the solution the doctor injected was really isotonic?

What happens to the membrane of a vesicle after exocytosis?

  1. It leaves the cell.
  2. It is disassembled by the cell.
  3. It fuses with and becomes part of the plasma membrane.
  4. It is used again in another exocytosis event.

Which plasma membrane component can be either found on its surface or embedded in the membrane structure?

a. protein

b. cholesterol

c. carbohydrate

d. phospholipid

Which transport mechanism can bring whole cells into a cell?

  1. Pinocytosis
  2. Phagocytosis
  3. Facilitated transport
  4. Primary active transport

If the pH outside the cell decreases, would you expect the amount of amino acids transported into the cell to increase or decrease?
See all solutions

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