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Chapter 5: Q. 8 (page 153)

Water moves via osmosis_________.

  1. throughout the cytoplasm
  2. from an area with a high concentration of other solutes to a lower one
  3. from an area with a high concentration of water to a one of lower concentration
  4. from an area with a low concentration of water to higher concentration

Short Answer

Expert verified

Option (c) is correct. The overall transport or diffusion of solvent molecules throughout a selectively permeable membrane from higher to lower concentration is known as osmosis.

Step by step solution

01

Explanation for correct option (c) 

The passage of water over a semipermeable membrane from a location of higher solute concentration to a location of lower water concentration is known as osmosis.

02

Explanation for incorrect option (a) 

Water moves via osmosis, not through the cytoplasm. Osmosis allows water to enter the cell. The cell becomes turgid as the cytoplasm pushes against the cell wall.

03

Explanation for incorrect option (b) 

Water always travels from a higher-concentration location to a lower-concentration area through osmosis. Water, but not the solute, can pass through the selectively permeable membrane.

04

Explanation for incorrect option (d) 

The passage of water over a semipermeable membrane from a location of higher solute concentration to a location of lower water concentration is known as osmosis.

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Most popular questions from this chapter

Which characteristic of a phospholipid contributes to the fluidity of the membrane?

  1. its head
  2. cholesterol
  3. a saturated fatty acid tail
  4. double bonds in the fatty acid tail

What problem is faced by organisms that live in fresh water?

a. Their bodies tend to take in too much water.

b. They have no way of controlling their tonicity.

c. Only salt water poses problems for animals that live in it.

d. Their bodies tend to lose too much water to their environment

A scientist compares the plasma membrane composition of an animal from the Mediterranean coast with one from the Mojave Desert. Which hypothesis is most likely to be correct?

  1. The cells from the Mediterranean coast animal will have more fluid plasma membranes.
  2. The cells from the Mojave Desert animal will have a higher cholesterol concentration in the plasma membranes.
  3. The cells鈥� plasma membranes will be indistinguishable.
  4. 鈥楾he cells from the Mediterranean coast animal will have a higher glycoprotein content, while the cells from the Mojave Desert animal will have a higher lipoprotein content.

Many viruses enter host cells through receptor-mediated endocytosis. What is an advantage of this entry strategy?

  1. The virus directly enters the cytoplasm of the cell.
  2. The virus is protected from recognition by white blood cells.
  3. The virus only enters its target host cell type.
  4. The virus can directly inject its genome into the cell's nucleus.

What is the primary function of carbohydrates attached to the exterior of cell membranes?

  1. identification of the cell
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  3. strengthening the membrane
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