Cell Transport

Front

What is the definition of hypotonic solution?

Back

A hypotonic solution is one where the concentration of solutes is lower than that inside the cell, leading to water moving into the cell.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of moving materials across a cell membrane with the help of proteins, without the use of energy.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration through a semipermeable membrane.

Front

What happens to plant cells during plasmolysis?

Back

During plasmolysis, plant cells lose water to their environment, causing the cell membrane to collapse away from the cell wall.

Front

What is the difference between hypertonic, hypotonic, and isotonic solutions?

Back

Hypertonic solutions have a higher concentration of solutes than the cell, hypotonic solutions have a lower concentration, and isotonic solutions have equal concentrations.

Front

How does a cell respond to being placed in a hypertonic solution?

Back

When a cell is placed in a hypertonic solution, it loses water and may shrivel due to the higher concentration of solutes outside the cell.

Front

What role do proteins play in facilitated diffusion?

Back

Proteins act as channels or carriers that help specific molecules cross the cell membrane during facilitated diffusion.

Front

What is the significance of the cell membrane's semipermeability?

Back

The semipermeability of the cell membrane allows it to control the movement of substances in and out of the cell, maintaining homeostasis.

Front

What is the process of active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy (usually from ATP).

Front

What is the effect of a cell being in an isotonic solution?

Back

In an isotonic solution, the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.