Cellular Transport

Front

What is cellular transport?

Back

Cellular transport refers to the movement of substances across the cell membrane, which can occur through passive or active mechanisms.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

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

Back

Isotonic solutions have equal solute concentrations inside and outside the cell; hypertonic solutions have a higher solute concentration outside the cell, causing water to leave the cell; hypotonic solutions have a lower solute concentration outside the cell, causing water to enter the cell.

Front

What is homeostasis in the context of cellular transport?

Back

Homeostasis is the maintenance of a stable internal environment within a cell, despite changes in external conditions.

Front

How does water move in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, leading to cell shrinkage.

Front

How does water move in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, leading to cell swelling.

Front

What is the role of the cell membrane in cellular transport?

Back

The cell membrane regulates the movement of substances in and out of the cell, maintaining homeostasis and allowing for selective permeability.

Front

What is active transport?

Back

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

Front

What is passive transport?

Back

Passive transport is the movement of substances across the cell membrane without the use of energy, typically along the concentration gradient.

Front

What happens to a cell placed in an isotonic solution?

Back

A cell placed in an isotonic solution will maintain its shape and size, as there is no net movement of water.